diff --git a/src/bitmessagecurses/__init__.py b/src/bitmessagecurses/__init__.py
index 19788c2c..504a2b4d 100644
--- a/src/bitmessagecurses/__init__.py
+++ b/src/bitmessagecurses/__init__.py
@@ -1,4 +1,7 @@
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
 # Copyright (c) 2014 Luke Montalvo <lukemontalvo@gmail.com>
 # This file adds a alternative commandline interface, feel free to critique and fork
 # 
@@ -8,9 +11,17 @@ from __future__ import print_function
 #     * python2-pythondialog
 #  * dialog
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import chr
+from builtins import ascii
+from builtins import str
+from builtins import range
+from builtins import *
+from builtins import object
 import os
 import sys
-import StringIO
+import io
 from textwrap import *
 
 import time
@@ -24,7 +35,7 @@ from helper_sql import *
 from helper_ackPayload import genAckPayload
 
 from addresses import *
-import ConfigParser
+import configparser
 from bmconfigparser import BMConfigParser
 from inventory import Inventory
 import l10n
@@ -61,13 +72,13 @@ bwtype = "black"
 
 BROADCAST_STR = "[Broadcast subscribers]"
 
-class printLog:
+class printLog(object):
     def write(self, output):
         global log
         log += output
     def flush(self):
         pass
-class errLog:
+class errLog(object):
     def write(self, output):
         global log
         log += "!"+output
@@ -79,7 +90,7 @@ errlog = errLog()
 
 def cpair(a):
     r = curses.color_pair(a)
-    if r not in range(1, curses.COLOR_PAIRS-1):
+    if r not in list(range(1, curses.COLOR_PAIRS-1)):
         r = curses.color_pair(0)
     return r
 def ascii(s):
@@ -304,11 +315,11 @@ def handlech(c, stdscr):
                                 msg = ""
                                 for i, item in enumerate(data.split("\n")):
                                     msg += fill(item, replace_whitespace=False)+"\n"
-                                scrollbox(d, unicode(ascii(msg)), 30, 80)
+                                scrollbox(d, str(ascii(msg)), 30, 80)
                                 sqlExecute("UPDATE inbox SET read=1 WHERE msgid=?", inbox[inboxcur][0])
                                 inbox[inboxcur][7] = 1
                             else:
-                                scrollbox(d, unicode("Could not fetch message."))
+                                scrollbox(d, str("Could not fetch message."))
                         elif t == "2": # Mark unread
                             sqlExecute("UPDATE inbox SET read=0 WHERE msgid=?", inbox[inboxcur][0])
                             inbox[inboxcur][7] = 0
@@ -322,7 +333,7 @@ def handlech(c, stdscr):
                                     ischan = True
                                     break
                             if not addresses[i][1]:
-                                scrollbox(d, unicode("Sending address disabled, please either enable it or choose a different address."))
+                                scrollbox(d, str("Sending address disabled, please either enable it or choose a different address."))
                                 return
                             toaddr = m[2]
                             if ischan:
@@ -352,7 +363,7 @@ def handlech(c, stdscr):
                                     addrbook.append([label, addr])
                                     addrbook.reverse()
                             else:
-                                scrollbox(d, unicode("The selected address is already in the Address Book."))
+                                scrollbox(d, str("The selected address is already in the Address Book."))
                         elif t == "5": # Save message
                             set_background_title(d, "Save \""+inbox[inboxcur][5]+"\" as text file")
                             r, t = d.inputbox("Filename", init=inbox[inboxcur][5]+".txt")
@@ -366,11 +377,11 @@ def handlech(c, stdscr):
                                     fh.write(msg)
                                     fh.close()
                                 else:
-                                    scrollbox(d, unicode("Could not fetch message."))
+                                    scrollbox(d, str("Could not fetch message."))
                         elif t == "6": # Move to trash
                             sqlExecute("UPDATE inbox SET folder='trash' WHERE msgid=?", inbox[inboxcur][0])
                             del inbox[inboxcur]
-                            scrollbox(d, unicode("Message moved to trash. There is no interface to view your trash, \nbut the message is still on disk if you are desperate to recover it."))
+                            scrollbox(d, str("Message moved to trash. There is no interface to view your trash, \nbut the message is still on disk if you are desperate to recover it."))
                 elif menutab == 2:
                     a = ""
                     if addresses[addrcur][3] != 0: # if current address is a chan
@@ -393,13 +404,13 @@ def handlech(c, stdscr):
                                 msg = ""
                                 for i, item in enumerate(data.split("\n")):
                                     msg += fill(item, replace_whitespace=False)+"\n"
-                                scrollbox(d, unicode(ascii(msg)), 30, 80)
+                                scrollbox(d, str(ascii(msg)), 30, 80)
                             else:
-                                scrollbox(d, unicode("Could not fetch message."))
+                                scrollbox(d, str("Could not fetch message."))
                         elif t == "2": # Move to trash
                             sqlExecute("UPDATE sent SET folder='trash' WHERE subject=? AND ackdata=?", sentbox[sentcur][4], sentbox[sentcur][6])
                             del sentbox[sentcur]
-                            scrollbox(d, unicode("Message moved to trash. There is no interface to view your trash, \nbut the message is still on disk if you are desperate to recover it."))
+                            scrollbox(d, str("Message moved to trash. There is no interface to view your trash, \nbut the message is still on disk if you are desperate to recover it."))
                 elif menutab == 4:
                     set_background_title(d, "Your Identities Dialog Box")
                     if len(addresses) <= addrcur:
@@ -417,7 +428,7 @@ def handlech(c, stdscr):
                     if r == d.DIALOG_OK:
                         if t == "1": # Create new address
                             set_background_title(d, "Create new address")
-                            scrollbox(d, unicode("Here you may generate as many addresses as you like.\n"
+                            scrollbox(d, str("Here you may generate as many addresses as you like.\n"
                                 "Indeed, creating and abandoning addresses is encouraged.\n"
                                 "Deterministic addresses have several pros and cons:\n"
                                 "\nPros:\n"
@@ -475,12 +486,12 @@ def handlech(c, stdscr):
                                                     choices=[("1", "Spend time shortening the address", 1 if shorten else 0)])
                                                 if r == d.DIALOG_OK and "1" in t:
                                                     shorten = True
-                                                scrollbox(d, unicode("In addition to your passphrase, be sure to remember the following numbers:\n"
+                                                scrollbox(d, str("In addition to your passphrase, be sure to remember the following numbers:\n"
                                                     "\n  * Address version number: "+str(4)+"\n"
                                                     "  * Stream number: "+str(stream)))
                                                 queues.addressGeneratorQueue.put(('createDeterministicAddresses', 4, stream, "unused deterministic address", number, str(passphrase), shorten))
                                         else:
-                                            scrollbox(d, unicode("Passphrases do not match"))
+                                            scrollbox(d, str("Passphrases do not match"))
                         elif t == "2": # Send a message
                             a = ""
                             if addresses[addrcur][3] != 0: # if current address is a chan
@@ -528,7 +539,7 @@ def handlech(c, stdscr):
                             a = addresses[addrcur][2]
                             set_background_title(d, "Special address behavior")
                             if BMConfigParser().safeGetBoolean(a, "chan"):
-                                scrollbox(d, unicode("This is a chan address. You cannot use it as a pseudo-mailing list."))
+                                scrollbox(d, str("This is a chan address. You cannot use it as a pseudo-mailing list."))
                             else:
                                 m = BMConfigParser().safeGetBoolean(a, "mailinglist")
                                 r, t = d.radiolist("Select address behavior",
@@ -544,7 +555,7 @@ def handlech(c, stdscr):
                                     elif t == "2" and m == False:
                                         try:
                                             mn = BMConfigParser().get(a, "mailinglistname")
-                                        except ConfigParser.NoOptionError:
+                                        except configparser.NoOptionError:
                                            mn = ""
                                         r, t = d.inputbox("Mailing list name", init=mn)
                                         if r == d.DIALOG_OK:
@@ -633,7 +644,7 @@ def handlech(c, stdscr):
                                         addrbook.append([t, addr])
                                         addrbook.reverse()
                                 else:
-                                    scrollbox(d, unicode("The selected address is already in the Address Book."))
+                                    scrollbox(d, str("The selected address is already in the Address Book."))
                         elif t == "4":
                             r, t = d.inputbox("Type in \"I want to delete this Address Book entry\"")
                             if r == d.DIALOG_OK and t == "I want to delete this Address Book entry":
@@ -772,20 +783,20 @@ def sendMessage(sender="", recv="", broadcast=None, subject="", body="", reply=F
                         err += "Some data encoded in the address is malformed. There might be something wrong with the software of your acquaintance."
                     else:
                         err += "It is unknown what is wrong with the address."
-                    scrollbox(d, unicode(err))
+                    scrollbox(d, str(err))
                 else:
                     addr = addBMIfNotPresent(addr)
                     if version > 4 or version <= 1:
                         set_background_title(d, "Recipient address error")
-                        scrollbox(d, unicode("Could not understand version number " + version + "of address" + addr + "."))
+                        scrollbox(d, str("Could not understand version number " + version + "of address" + addr + "."))
                         continue
                     if stream > 1 or stream == 0:
                         set_background_title(d, "Recipient address error")
-                        scrollbox(d, unicode("Bitmessage currently only supports stream numbers of 1, unlike as requested for address " + addr + "."))
+                        scrollbox(d, str("Bitmessage currently only supports stream numbers of 1, unlike as requested for address " + addr + "."))
                         continue
                     if not network.stats.connectedHostsList():
                         set_background_title(d, "Not connected warning")
-                        scrollbox(d, unicode("Because you are not currently connected to the network, "))
+                        scrollbox(d, str("Because you are not currently connected to the network, "))
                     stealthLevel = BMConfigParser().safeGetInt('bitmessagesettings', 'ackstealthlevel')
                     ackdata = genAckPayload(streamNumber, stealthLevel)
                     sqlExecute(
@@ -809,7 +820,7 @@ def sendMessage(sender="", recv="", broadcast=None, subject="", body="", reply=F
     else: # Broadcast
         if recv == "":
             set_background_title(d, "Empty sender error")
-            scrollbox(d, unicode("You must specify an address to send the message from."))
+            scrollbox(d, str("You must specify an address to send the message from."))
         else:
             # dummy ackdata, no need for stealth
             ackdata = genAckPayload(streamNumber, 0)
diff --git a/src/bitmessagekivy/kivy_helper_search.py b/src/bitmessagekivy/kivy_helper_search.py
index 684a1722..9f595515 100644
--- a/src/bitmessagekivy/kivy_helper_search.py
+++ b/src/bitmessagekivy/kivy_helper_search.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from helper_sql import *
 
 
diff --git a/src/bitmessagekivy/mpybit.py b/src/bitmessagekivy/mpybit.py
index fe894c68..26a56437 100644
--- a/src/bitmessagekivy/mpybit.py
+++ b/src/bitmessagekivy/mpybit.py
@@ -1,5 +1,10 @@
 from __future__ import print_function
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from . import kivy_helper_search
 import os
 import queues
diff --git a/src/bitmessageqt/__init__.py b/src/bitmessageqt/__init__.py
index 6bb695f3..f875b63b 100644
--- a/src/bitmessageqt/__init__.py
+++ b/src/bitmessageqt/__init__.py
@@ -2,7 +2,16 @@
 PyQt based UI for bitmessage, the main module
 """
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import range
+from builtins import *
+from past.utils import old_div
 import hashlib
 import locale
 import os
@@ -405,7 +414,7 @@ class MyForm(settingsmixin.SMainWindow):
 
     def rerenderTabTreeSubscriptions(self):
         treeWidget = self.ui.treeWidgetSubscriptions
-        folders = Ui_FolderWidget.folderWeight.keys()
+        folders = list(Ui_FolderWidget.folderWeight.keys())
         folders.remove("new")
 
         # sort ascending when creating
@@ -453,7 +462,7 @@ class MyForm(settingsmixin.SMainWindow):
             # add missing folders
             if len(db[toAddress]) > 0:
                 j = 0
-                for f, c in db[toAddress].iteritems():
+                for f, c in db[toAddress].items():
                     try:
                         subwidget = Ui_FolderWidget(widget, j, toAddress, f, c['count'])
                     except KeyError:
@@ -492,7 +501,7 @@ class MyForm(settingsmixin.SMainWindow):
             treeWidget = self.ui.treeWidgetYourIdentities
         elif tab == 'chan':
             treeWidget = self.ui.treeWidgetChans
-        folders = Ui_FolderWidget.folderWeight.keys()
+        folders = list(Ui_FolderWidget.folderWeight.keys())
         
         # sort ascending when creating
         if treeWidget.topLevelItemCount() == 0:
@@ -573,7 +582,7 @@ class MyForm(settingsmixin.SMainWindow):
             # add missing folders
             if len(db[toAddress]) > 0:
                 j = 0
-                for f, c in db[toAddress].iteritems():
+                for f, c in db[toAddress].items():
                     if toAddress is not None and tab == 'messages' and folder == "new":
                         continue
                     subwidget = Ui_FolderWidget(widget, j, toAddress, f, c)
@@ -836,7 +845,7 @@ class MyForm(settingsmixin.SMainWindow):
         BMConfigParser().save()
 
     def updateHumanFriendlyTTLDescription(self, TTL):
-        numberOfHours = int(round(TTL / (60*60)))
+        numberOfHours = int(round(old_div(TTL, (60*60))))
         font = QtGui.QFont()
         stylesheet = ""
 
@@ -849,7 +858,7 @@ class MyForm(settingsmixin.SMainWindow):
             stylesheet = "QLabel { color : red; }"
             font.setBold(True)
         else:
-            numberOfDays = int(round(TTL / (24*60*60)))
+            numberOfDays = int(round(old_div(TTL, (24*60*60))))
             self.ui.labelHumanFriendlyTTLDescription.setText(_translate("MainWindow", "%n day(s)", None, QtCore.QCoreApplication.CodecForTr, numberOfDays))
             font.setBold(False)
         self.ui.labelHumanFriendlyTTLDescription.setStyleSheet(stylesheet)
@@ -956,7 +965,7 @@ class MyForm(settingsmixin.SMainWindow):
             # rrow = related.row(msgid), msgid should be QTableWidgetItem
             # related = related.findItems(msgid, QtCore.Qt.MatchExactly),
             # returns an empty list
-            for rrow in xrange(related.rowCount()):
+            for rrow in range(related.rowCount()):
                 if msgid == str(related.item(rrow, 3).data(
                         QtCore.Qt.UserRole).toPyObject()):
                     break
@@ -1023,7 +1032,7 @@ class MyForm(settingsmixin.SMainWindow):
             for i in range(root.childCount()):
                 addressItem = root.child(i)
                 if addressItem.type == AccountMixin.ALL:
-                    newCount = sum(totalUnread.itervalues())
+                    newCount = sum(totalUnread.values())
                     self.drawTrayIcon(self.currentTrayIconFileName, newCount)
                 else:
                     try:
@@ -1031,7 +1040,7 @@ class MyForm(settingsmixin.SMainWindow):
                             broadcastsUnread
                             if addressItem.type == AccountMixin.SUBSCRIPTION
                             else normalUnread
-                        )[addressItem.address].itervalues())
+                        )[addressItem.address].values())
                     except KeyError:
                         newCount = 0
                 if newCount != addressItem.unreadCount:
@@ -1074,9 +1083,9 @@ class MyForm(settingsmixin.SMainWindow):
         acct.parseMessage(toAddress, fromAddress, subject, "")
 
         items = []
-        MessageList_AddressWidget(items, str(toAddress), unicode(acct.toLabel, 'utf-8'))
-        MessageList_AddressWidget(items, str(fromAddress), unicode(acct.fromLabel, 'utf-8'))
-        MessageList_SubjectWidget(items, str(subject), unicode(acct.subject, 'utf-8', 'replace'))
+        MessageList_AddressWidget(items, str(toAddress), str(acct.toLabel, 'utf-8'))
+        MessageList_AddressWidget(items, str(fromAddress), str(acct.fromLabel, 'utf-8'))
+        MessageList_SubjectWidget(items, str(subject), str(acct.subject, 'utf-8', 'replace'))
 
         if status == 'awaitingpubkey':
             statusText = _translate(
@@ -1145,11 +1154,11 @@ class MyForm(settingsmixin.SMainWindow):
             
         items = []
         #to
-        MessageList_AddressWidget(items, toAddress, unicode(acct.toLabel, 'utf-8'), not read)
+        MessageList_AddressWidget(items, toAddress, str(acct.toLabel, 'utf-8'), not read)
         # from
-        MessageList_AddressWidget(items, fromAddress, unicode(acct.fromLabel, 'utf-8'), not read)
+        MessageList_AddressWidget(items, fromAddress, str(acct.fromLabel, 'utf-8'), not read)
         # subject
-        MessageList_SubjectWidget(items, str(subject), unicode(acct.subject, 'utf-8', 'replace'), not read)
+        MessageList_SubjectWidget(items, str(subject), str(acct.subject, 'utf-8', 'replace'), not read)
         # time received
         time_item = myTableWidgetItem(l10n.formatTimestamp(received))
         time_item.setToolTip(l10n.formatTimestamp(received))
@@ -1428,7 +1437,7 @@ class MyForm(settingsmixin.SMainWindow):
             self, title, subtitle, category, label=None, icon=None):
         self.playSound(category, label)
         self._notifier(
-            unicode(title), unicode(subtitle), category, label, icon)
+            str(title), str(subtitle), category, label, icon)
 
     # tree
     def treeWidgetKeyPressEvent(self, event):
@@ -1857,9 +1866,9 @@ class MyForm(settingsmixin.SMainWindow):
     def rerenderAddressBook(self):
         def addRow (address, label, type):
             self.ui.tableWidgetAddressBook.insertRow(0)
-            newItem = Ui_AddressBookWidgetItemLabel(address, unicode(label, 'utf-8'), type)
+            newItem = Ui_AddressBookWidgetItemLabel(address, str(label, 'utf-8'), type)
             self.ui.tableWidgetAddressBook.setItem(0, 0, newItem)
-            newItem = Ui_AddressBookWidgetItemAddress(address, unicode(label, 'utf-8'), type)
+            newItem = Ui_AddressBookWidgetItemAddress(address, str(label, 'utf-8'), type)
             self.ui.tableWidgetAddressBook.setItem(0, 1, newItem)
 
         oldRows = {}
@@ -1893,13 +1902,13 @@ class MyForm(settingsmixin.SMainWindow):
         completerList = []
         for address in sorted(oldRows, key = lambda x: oldRows[x][2], reverse = True):
             if address in newRows:
-                completerList.append(unicode(newRows[address][0], encoding="UTF-8") + " <" + address + ">")
+                completerList.append(str(newRows[address][0], encoding="UTF-8") + " <" + address + ">")
                 newRows.pop(address)
             else:
                 self.ui.tableWidgetAddressBook.removeRow(oldRows[address][2])
         for address in newRows:
             addRow(address, newRows[address][0], newRows[address][1])
-            completerList.append(unicode(newRows[address][0], encoding="UTF-8") + " <" + address + ">")
+            completerList.append(str(newRows[address][0], encoding="UTF-8") + " <" + address + ">")
 
         # sort
         self.ui.tableWidgetAddressBook.sortByColumn(
@@ -2011,7 +2020,7 @@ class MyForm(settingsmixin.SMainWindow):
                         toAddress)
                     if status != 'success':
                         try:
-                            toAddress = unicode(toAddress, 'utf-8', 'ignore')
+                            toAddress = str(toAddress, 'utf-8', 'ignore')
                         except:
                             pass
                         logger.error('Error: Could not decode recipient address ' + toAddress + ':' + status)
@@ -2236,7 +2245,7 @@ class MyForm(settingsmixin.SMainWindow):
                 addressInKeysFile, 'enabled')  # I realize that this is poor programming practice but I don't care. It's easier for others to read.
             isMaillinglist = BMConfigParser().safeGetBoolean(addressInKeysFile, 'mailinglist')
             if isEnabled and not isMaillinglist:
-                label = unicode(BMConfigParser().get(addressInKeysFile, 'label'), 'utf-8', 'ignore').strip()
+                label = str(BMConfigParser().get(addressInKeysFile, 'label'), 'utf-8', 'ignore').strip()
                 if label == "":
                     label = addressInKeysFile
                 self.ui.comboBoxSendFrom.addItem(avatarize(addressInKeysFile), label, addressInKeysFile)
@@ -2260,7 +2269,7 @@ class MyForm(settingsmixin.SMainWindow):
                 addressInKeysFile, 'enabled')  # I realize that this is poor programming practice but I don't care. It's easier for others to read.
             isChan = BMConfigParser().safeGetBoolean(addressInKeysFile, 'chan')
             if isEnabled and not isChan:
-                label = unicode(BMConfigParser().get(addressInKeysFile, 'label'), 'utf-8', 'ignore').strip()
+                label = str(BMConfigParser().get(addressInKeysFile, 'label'), 'utf-8', 'ignore').strip()
                 if label == "":
                     label = addressInKeysFile
                 self.ui.comboBoxSendFromBroadcast.addItem(avatarize(addressInKeysFile), label, addressInKeysFile)
@@ -2299,7 +2308,7 @@ class MyForm(settingsmixin.SMainWindow):
                 continue
             
             self.addMessageListItemSent(sent, toAddress, fromAddress, subject, "msgqueued", ackdata, time.time())
-            self.getAccountTextedit(acct).setPlainText(unicode(message, 'utf-8', 'replace'))
+            self.getAccountTextedit(acct).setPlainText(str(message, 'utf-8', 'replace'))
             sent.setCurrentCell(0, 0)
 
     def displayNewInboxMessage(self, inventoryHash, toAddress, fromAddress, subject, message):
@@ -2332,7 +2341,7 @@ class MyForm(settingsmixin.SMainWindow):
             self.notifierShow(
                 _translate("MainWindow", "New Message"),
                 _translate("MainWindow", "From %1").arg(
-                    unicode(acct.fromLabel, 'utf-8')),
+                    str(acct.fromLabel, 'utf-8')),
                 sound.SOUND_UNKNOWN
             )
         if self.getCurrentAccount() is not None and ((self.getCurrentFolder(treeWidget) != "inbox" and self.getCurrentFolder(treeWidget) is not None) or self.getCurrentAccount(treeWidget) != acct.address):
@@ -2880,8 +2889,8 @@ class MyForm(settingsmixin.SMainWindow):
                 if curWorkerQueue > 0:
                     self.updateStatusBar(_translate(
                         "MainWindow", "Waiting for PoW to finish... %1%"
-                    ).arg(50 * (maxWorkerQueue - curWorkerQueue) /
-                          maxWorkerQueue))
+                    ).arg(old_div(50 * (maxWorkerQueue - curWorkerQueue),
+                          maxWorkerQueue)))
                     time.sleep(0.5)
                     QtCore.QCoreApplication.processEvents(
                         QtCore.QEventLoop.AllEvents, 1000
@@ -2909,7 +2918,7 @@ class MyForm(settingsmixin.SMainWindow):
                 self.updateStatusBar(_translate(
                     "MainWindow",
                     "Waiting for objects to be sent... %1%"
-                ).arg(int(50 + 20 * (pendingUpload() / maxPendingUpload))))
+                ).arg(int(50 + 20 * (old_div(pendingUpload(), maxPendingUpload)))))
                 time.sleep(0.5)
                 QtCore.QCoreApplication.processEvents(
                     QtCore.QEventLoop.AllEvents, 1000
@@ -2929,7 +2938,7 @@ class MyForm(settingsmixin.SMainWindow):
             QtCore.QEventLoop.AllEvents, 1000
         )
         self.saveSettings()
-        for attr, obj in self.ui.__dict__.iteritems():
+        for attr, obj in self.ui.__dict__.items():
             if hasattr(obj, "__class__") \
                     and isinstance(obj, settingsmixin.SettingsMixin):
                 saveMethod = getattr(obj, "saveSettings", None)
@@ -2979,7 +2988,7 @@ class MyForm(settingsmixin.SMainWindow):
 
         lines = messageText.split('\n')
         totalLines = len(lines)
-        for i in xrange(totalLines):
+        for i in range(totalLines):
             if 'Message ostensibly from ' in lines[i]:
                 lines[i] = '<p style="font-size: 12px; color: grey;">%s</span></p>' % (
                     lines[i])
@@ -2990,7 +2999,7 @@ class MyForm(settingsmixin.SMainWindow):
                 lines[i] = '<br><br>'
         content = ' '.join(lines) # To keep the whitespace between lines
         content = shared.fixPotentiallyInvalidUTF8Data(content)
-        content = unicode(content, 'utf-8)')
+        content = str(content, 'utf-8)')
         textEdit.setHtml(QtCore.QString(content))
 
     def on_action_InboxMarkUnread(self):
@@ -3173,7 +3182,7 @@ class MyForm(settingsmixin.SMainWindow):
         self.setSendFromComboBox(toAddressAtCurrentInboxRow)
 
         quotedText = self.quoted_text(
-            unicode(messageAtCurrentInboxRow, 'utf-8', 'replace'))
+            str(messageAtCurrentInboxRow, 'utf-8', 'replace'))
         widget['message'].setPlainText(quotedText)
         if acct.subject[0:3] in ['Re:', 'RE:']:
             widget['subject'].setText(
@@ -3417,7 +3426,7 @@ class MyForm(settingsmixin.SMainWindow):
             return self.updateStatusBar(_translate(
                 "MainWindow", "No addresses selected."))
 
-        addresses_string = unicode(
+        addresses_string = str(
             self.ui.lineEditTo.text().toUtf8(), 'utf-8')
         for item in selected_items:
             address_string = item.accountString()
@@ -3805,7 +3814,7 @@ class MyForm(settingsmixin.SMainWindow):
             text = str(tableWidget.item(currentRow, currentColumn).label)
         else:
             text = tableWidget.item(currentRow, currentColumn).data(QtCore.Qt.UserRole)
-        text = unicode(str(text), 'utf-8', 'ignore')
+        text = str(str(text), 'utf-8', 'ignore')
         clipboard = QtGui.QApplication.clipboard()
         clipboard.setText(text)
 
@@ -3901,11 +3910,11 @@ class MyForm(settingsmixin.SMainWindow):
         self.setAddressSound(widget.item(widget.currentRow(), 0).text())
 
     def setAddressSound(self, addr):
-        filters = [unicode(_translate(
+        filters = [str(_translate(
             "MainWindow", "Sound files (%s)" %
             ' '.join(['*%s%s' % (os.extsep, ext) for ext in sound.extensions])
         ))]
-        sourcefile = unicode(QtGui.QFileDialog.getOpenFileName(
+        sourcefile = str(QtGui.QFileDialog.getOpenFileName(
             self, _translate("MainWindow", "Set notification sound..."),
             filter=';;'.join(filters)
         ))
@@ -3914,7 +3923,7 @@ class MyForm(settingsmixin.SMainWindow):
             return
 
         destdir = os.path.join(state.appdata, 'sounds')
-        destfile = unicode(addr) + os.path.splitext(sourcefile)[-1]
+        destfile = str(addr) + os.path.splitext(sourcefile)[-1]
         destination = os.path.join(destdir, destfile)
 
         if sourcefile == destination:
@@ -4121,7 +4130,7 @@ class MyForm(settingsmixin.SMainWindow):
         if item.type == AccountMixin.ALL:
             return
         
-        newLabel = unicode(item.text(0), 'utf-8', 'ignore')
+        newLabel = str(item.text(0), 'utf-8', 'ignore')
         oldLabel = item.defaultLabel()
 
         # unchanged, do not do anything either
@@ -4192,7 +4201,7 @@ class MyForm(settingsmixin.SMainWindow):
         self.rerenderMessagelistToLabels()
         completerList = self.ui.lineEditTo.completer().model().stringList()
         for i in range(len(completerList)):
-            if unicode(completerList[i]).endswith(" <" + item.address + ">"):
+            if str(completerList[i]).endswith(" <" + item.address + ">"):
                 completerList[i] = item.label + " <" + item.address + ">"
         self.ui.lineEditTo.completer().model().setStringList(completerList)
 
@@ -4246,7 +4255,7 @@ class MyForm(settingsmixin.SMainWindow):
         QtCore.QCoreApplication.setOrganizationDomain("bitmessage.org")
         QtCore.QCoreApplication.setApplicationName("pybitmessageqt")
         self.loadSettings()
-        for attr, obj in self.ui.__dict__.iteritems():
+        for attr, obj in self.ui.__dict__.items():
             if hasattr(obj, "__class__") and \
                     isinstance(obj, settingsmixin.SettingsMixin):
                 loadMethod = getattr(obj, "loadSettings", None)
diff --git a/src/bitmessageqt/account.py b/src/bitmessageqt/account.py
index 50ea3548..9c3159ac 100644
--- a/src/bitmessageqt/account.py
+++ b/src/bitmessageqt/account.py
@@ -8,7 +8,16 @@ Account related functions.
 """
 
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from past.builtins import cmp
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
 import inspect
 import re
 import sys
@@ -31,12 +40,12 @@ def getSortedAccounts():
     configSections = BMConfigParser().addresses()
     configSections.sort(
         cmp=lambda x, y: cmp(
-            unicode(
+            str(
                 BMConfigParser().get(
                     x,
                     'label'),
                 'utf-8').lower(),
-            unicode(
+            str(
                 BMConfigParser().get(
                     y,
                     'label'),
@@ -169,7 +178,7 @@ class BMAccount(object):
 
         self.toAddress = toAddress
         self.fromAddress = fromAddress
-        if isinstance(subject, unicode):
+        if isinstance(subject, str):
             self.subject = str(subject)
         else:
             self.subject = subject
diff --git a/src/bitmessageqt/address_dialogs.py b/src/bitmessageqt/address_dialogs.py
index 8fce1f76..9176625c 100644
--- a/src/bitmessageqt/address_dialogs.py
+++ b/src/bitmessageqt/address_dialogs.py
@@ -4,8 +4,16 @@ src/bitmessageqt/address_dialogs.py
 
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 # pylint: disable=attribute-defined-outside-init
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
 import hashlib
 
 from PyQt4 import QtCore, QtGui
@@ -263,7 +271,7 @@ class SpecialAddressBehaviorDialog(QtGui.QDialog, RetranslateMixin):
                 except:
                     mailingListName = ''
                 self.lineEditMailingListName.setText(
-                    unicode(mailingListName, 'utf-8')
+                    str(mailingListName, 'utf-8')
                 )
 
         QtGui.QWidget.resize(self, QtGui.QWidget.sizeHint(self))
diff --git a/src/bitmessageqt/addressvalidator.py b/src/bitmessageqt/addressvalidator.py
index f035001e..bb0ba1fb 100644
--- a/src/bitmessageqt/addressvalidator.py
+++ b/src/bitmessageqt/addressvalidator.py
@@ -1,6 +1,14 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
 from PyQt4 import QtGui
-from Queue import Empty
+from queue import Empty
 
 from addresses import decodeAddress, addBMIfNotPresent
 from .account import getSortedAccounts
@@ -8,7 +16,7 @@ from queues import apiAddressGeneratorReturnQueue, addressGeneratorQueue
 from tr import _translate
 from .utils import str_chan
 
-class AddressPassPhraseValidatorMixin():
+class AddressPassPhraseValidatorMixin(object):
     def setParams(self, passPhraseObject=None, addressObject=None, feedBackObject=None, buttonBox=None, addressMandatory=True):
         self.addressObject = addressObject
         self.passPhraseObject = passPhraseObject
diff --git a/src/bitmessageqt/bitmessage_icons_rc.py b/src/bitmessageqt/bitmessage_icons_rc.py
index bb0a02c0..2d632d04 100644
--- a/src/bitmessageqt/bitmessage_icons_rc.py
+++ b/src/bitmessageqt/bitmessage_icons_rc.py
@@ -7,6 +7,13 @@
 #
 # WARNING! All changes made in this file will be lost!
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from PyQt4 import QtCore
 
 qt_resource_data = "\
diff --git a/src/bitmessageqt/bitmessageui.py b/src/bitmessageqt/bitmessageui.py
index 60c6e52e..8b777d36 100644
--- a/src/bitmessageqt/bitmessageui.py
+++ b/src/bitmessageqt/bitmessageui.py
@@ -8,6 +8,14 @@
 # WARNING! All changes made in this file will be lost!
 
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
+from past.utils import old_div
 from PyQt4 import QtCore, QtGui
 from bmconfigparser import BMConfigParser
 from .foldertree import AddressBookCompleter
@@ -709,7 +717,7 @@ class Ui_MainWindow(object):
         self.pushButtonTTL.setText(_translate("MainWindow", "TTL:", None))
         hours = 48
         try:
-            hours = int(BMConfigParser().getint('bitmessagesettings', 'ttl')/60/60)
+            hours = int(old_div(BMConfigParser().getint('bitmessagesettings', 'ttl'),60/60))
         except:
             pass
         self.labelHumanFriendlyTTLDescription.setText(_translate("MainWindow", "%n hour(s)", None, QtCore.QCoreApplication.CodecForTr, hours))
diff --git a/src/bitmessageqt/blacklist.py b/src/bitmessageqt/blacklist.py
index e19e658e..377000c6 100644
--- a/src/bitmessageqt/blacklist.py
+++ b/src/bitmessageqt/blacklist.py
@@ -1,4 +1,11 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from PyQt4 import QtCore, QtGui
 
 from . import widgets
@@ -74,7 +81,7 @@ class Blacklist(QtGui.QWidget, RetranslateMixin):
                 if queryreturn == []:
                     self.tableWidgetBlacklist.setSortingEnabled(False)
                     self.tableWidgetBlacklist.insertRow(0)
-                    newItem = QtGui.QTableWidgetItem(unicode(
+                    newItem = QtGui.QTableWidgetItem(str(
                         self.NewBlacklistDialogInstance.lineEditLabel.text().toUtf8(), 'utf-8'))
                     newItem.setIcon(avatarize(address))
                     self.tableWidgetBlacklist.setItem(0, 0, newItem)
@@ -173,7 +180,7 @@ class Blacklist(QtGui.QWidget, RetranslateMixin):
         for row in queryreturn:
             label, address, enabled = row
             self.tableWidgetBlacklist.insertRow(0)
-            newItem = QtGui.QTableWidgetItem(unicode(label, 'utf-8'))
+            newItem = QtGui.QTableWidgetItem(str(label, 'utf-8'))
             if not enabled:
                 newItem.setTextColor(QtGui.QColor(128, 128, 128))
             newItem.setIcon(avatarize(address))
diff --git a/src/bitmessageqt/dialogs.py b/src/bitmessageqt/dialogs.py
index 8cb04f5c..915392da 100644
--- a/src/bitmessageqt/dialogs.py
+++ b/src/bitmessageqt/dialogs.py
@@ -3,7 +3,14 @@ src/bitmessageqt/dialogs.py
 ===========================
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from PyQt4 import QtGui
 
 from version import softwareVersion
diff --git a/src/bitmessageqt/foldertree.py b/src/bitmessageqt/foldertree.py
index df482ba4..4997d698 100644
--- a/src/bitmessageqt/foldertree.py
+++ b/src/bitmessageqt/foldertree.py
@@ -3,8 +3,17 @@ src/bitmessageqt/foldertree.py
 ==============================
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 # pylint: disable=too-many-arguments,bad-super-call,attribute-defined-outside-init
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import range
+from builtins import *
+from builtins import object
 from cgi import escape
 
 from PyQt4 import QtCore, QtGui
@@ -123,7 +132,7 @@ class AccountMixin(object):
                 AccountMixin.NORMAL,
                 AccountMixin.CHAN, AccountMixin.MAILINGLIST):
             try:
-                retval = unicode(
+                retval = str(
                     BMConfigParser().get(self.address, 'label'), 'utf-8')
             except Exception:
                 queryreturn = sqlQuery(
@@ -135,12 +144,12 @@ class AccountMixin(object):
             if queryreturn != []:
                 for row in queryreturn:
                     retval, = row
-                    retval = unicode(retval, 'utf-8')
+                    retval = str(retval, 'utf-8')
         elif self.address is None or self.type == AccountMixin.ALL:
-            return unicode(
+            return str(
                 str(_translate("MainWindow", "All accounts")), 'utf-8')
 
-        return retval or unicode(self.address, 'utf-8')
+        return retval or str(self.address, 'utf-8')
 
 
 class BMTreeWidgetItem(QtGui.QTreeWidgetItem, AccountMixin):
@@ -231,15 +240,15 @@ class Ui_AddressWidget(BMTreeWidgetItem, SettingsMixin):
 
     def _getLabel(self):
         if self.address is None:
-            return unicode(_translate(
+            return str(_translate(
                 "MainWindow", "All accounts").toUtf8(), 'utf-8', 'ignore')
         else:
             try:
-                return unicode(
+                return str(
                     BMConfigParser().get(self.address, 'label'),
                     'utf-8', 'ignore')
             except:
-                return unicode(self.address, 'utf-8')
+                return str(self.address, 'utf-8')
 
     def _getAddressBracket(self, unreadCount=False):
         ret = "" if self.isExpanded() \
@@ -310,8 +319,8 @@ class Ui_SubscriptionWidget(Ui_AddressWidget):
         if queryreturn != []:
             for row in queryreturn:
                 retval, = row
-            return unicode(retval, 'utf-8', 'ignore')
-        return unicode(self.address, 'utf-8')
+            return str(retval, 'utf-8', 'ignore')
+        return str(self.address, 'utf-8')
 
     def setType(self):
         """Set account type"""
@@ -325,7 +334,7 @@ class Ui_SubscriptionWidget(Ui_AddressWidget):
                 label = str(
                     value.toString().toUtf8()).decode('utf-8', 'ignore')
             else:
-                label = unicode(value, 'utf-8', 'ignore')
+                label = str(value, 'utf-8', 'ignore')
             sqlExecute(
                 '''UPDATE subscriptions SET label=? WHERE address=?''',
                 label, self.address)
@@ -408,7 +417,7 @@ class MessageList_AddressWidget(BMAddressWidget):
                 AccountMixin.NORMAL,
                 AccountMixin.CHAN, AccountMixin.MAILINGLIST):
             try:
-                newLabel = unicode(
+                newLabel = str(
                     BMConfigParser().get(self.address, 'label'),
                     'utf-8', 'ignore')
             except:
@@ -419,7 +428,7 @@ class MessageList_AddressWidget(BMAddressWidget):
                 '''select label from subscriptions where address=?''', self.address)
         if queryreturn:
             for row in queryreturn:
-                newLabel = unicode(row[0], 'utf-8', 'ignore')
+                newLabel = str(row[0], 'utf-8', 'ignore')
 
         self.label = newLabel
 
@@ -460,7 +469,7 @@ class MessageList_SubjectWidget(BMTableWidgetItem):
         if role == QtCore.Qt.UserRole:
             return self.subject
         if role == QtCore.Qt.ToolTipRole:
-            return escape(unicode(self.subject, 'utf-8'))
+            return escape(str(self.subject, 'utf-8'))
         return super(MessageList_SubjectWidget, self).data(role)
 
     # label (or address) alphabetically, disabled at the end
@@ -558,14 +567,14 @@ class AddressBookCompleter(QtGui.QCompleter):
 
     def splitPath(self, path):
         """Split on semicolon"""
-        text = unicode(path.toUtf8(), 'utf-8')
+        text = str(path.toUtf8(), 'utf-8')
         return [text[:self.widget().cursorPosition()].split(';')[-1].strip()]
 
     def pathFromIndex(self, index):
         """Perform autocompletion (reimplemented QCompleter method)"""
-        autoString = unicode(
+        autoString = str(
             index.data(QtCore.Qt.EditRole).toString().toUtf8(), 'utf-8')
-        text = unicode(self.widget().text().toUtf8(), 'utf-8')
+        text = str(self.widget().text().toUtf8(), 'utf-8')
 
         # If cursor position was saved, restore it, else save it
         if self.cursorPos != -1:
diff --git a/src/bitmessageqt/languagebox.py b/src/bitmessageqt/languagebox.py
index 9032cc42..fe79a7e9 100644
--- a/src/bitmessageqt/languagebox.py
+++ b/src/bitmessageqt/languagebox.py
@@ -1,3 +1,11 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
 import glob
 import os
 from PyQt4 import QtCore, QtGui
diff --git a/src/bitmessageqt/messagecompose.py b/src/bitmessageqt/messagecompose.py
index f7d5dac3..b53606a5 100644
--- a/src/bitmessageqt/messagecompose.py
+++ b/src/bitmessageqt/messagecompose.py
@@ -1,3 +1,12 @@
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from past.utils import old_div
 from PyQt4 import QtCore, QtGui
 
 class MessageCompose(QtGui.QTextEdit):
@@ -13,7 +22,7 @@ class MessageCompose(QtGui.QTextEdit):
                 self.zoomIn(1)
             else:
                 self.zoomOut(1)
-            zoom = self.currentFont().pointSize() * 100 / self.defaultFontPointSize
+            zoom = old_div(self.currentFont().pointSize() * 100, self.defaultFontPointSize)
             QtGui.QApplication.activeWindow().statusBar().showMessage(QtGui.QApplication.translate("MainWindow", "Zoom level %1%").arg(str(zoom)))
         else:
             # in QTextEdit, super does not zoom, only scroll
diff --git a/src/bitmessageqt/messageview.py b/src/bitmessageqt/messageview.py
index 87c425f1..03e8ae2a 100644
--- a/src/bitmessageqt/messageview.py
+++ b/src/bitmessageqt/messageview.py
@@ -4,7 +4,15 @@ src/bitmessageqt/messageview.py
 
 """
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from past.utils import old_div
 from PyQt4 import QtCore, QtGui
 
 from .safehtmlparser import SafeHTMLParser
@@ -52,7 +60,7 @@ class MessageView(QtGui.QTextBrowser):
         super(MessageView, self).wheelEvent(event)
         if (QtGui.QApplication.queryKeyboardModifiers() &
                 QtCore.Qt.ControlModifier) == QtCore.Qt.ControlModifier and event.orientation() == QtCore.Qt.Vertical:
-            zoom = self.currentFont().pointSize() * 100 / self.defaultFontPointSize
+            zoom = old_div(self.currentFont().pointSize() * 100, self.defaultFontPointSize)
             QtGui.QApplication.activeWindow().statusBar().showMessage(
                 QtGui.QApplication.translate("MainWindow", "Zoom level %1%").arg(str(zoom)))
 
@@ -89,7 +97,7 @@ class MessageView(QtGui.QTextBrowser):
             QtGui.QApplication.translate(
                 "MessageView",
                 "The link \"%1\" will open in a browser. It may be a security risk, it could de-anonymise you"
-                " or download malicious data. Are you sure?").arg(unicode(link.toString())),
+                " or download malicious data. Are you sure?").arg(str(link.toString())),
             QtGui.QMessageBox.Yes,
             QtGui.QMessageBox.No)
         if reply == QtGui.QMessageBox.Yes:
@@ -131,7 +139,7 @@ class MessageView(QtGui.QTextBrowser):
         self.mode = MessageView.MODE_PLAIN
         out = self.html.raw
         if self.html.has_html:
-            out = "<div align=\"center\" style=\"text-decoration: underline;\"><b>" + unicode(
+            out = "<div align=\"center\" style=\"text-decoration: underline;\"><b>" + str(
                 QtGui.QApplication.translate(
                     "MessageView", "HTML detected, click here to display")) + "</b></div><br/>" + out
         self.out = out
@@ -143,7 +151,7 @@ class MessageView(QtGui.QTextBrowser):
         """Render message as HTML"""
         self.mode = MessageView.MODE_HTML
         out = self.html.sanitised
-        out = "<div align=\"center\" style=\"text-decoration: underline;\"><b>" + unicode(
+        out = "<div align=\"center\" style=\"text-decoration: underline;\"><b>" + str(
             QtGui.QApplication.translate("MessageView", "Click here to disable HTML")) + "</b></div><br/>" + out
         self.out = out
         self.outpos = 0
diff --git a/src/bitmessageqt/migrationwizard.py b/src/bitmessageqt/migrationwizard.py
index 6e80f1dc..6b66f094 100644
--- a/src/bitmessageqt/migrationwizard.py
+++ b/src/bitmessageqt/migrationwizard.py
@@ -1,4 +1,11 @@
 #!/usr/bin/env python2.7
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from PyQt4 import QtCore, QtGui
 
 class MigrationWizardIntroPage(QtGui.QWizardPage):
diff --git a/src/bitmessageqt/networkstatus.py b/src/bitmessageqt/networkstatus.py
index e54bee5a..744337bf 100644
--- a/src/bitmessageqt/networkstatus.py
+++ b/src/bitmessageqt/networkstatus.py
@@ -4,7 +4,17 @@ src/bitmessageqt/networkstatus.py
 
 """
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import map
+from builtins import range
+from builtins import *
+from past.utils import old_div
 import time
 
 from PyQt4 import QtCore, QtGui
@@ -235,7 +245,7 @@ class NetworkStatus(QtGui.QWidget, RetranslateMixin):
     def runEveryTwoSeconds(self):
         """Updates counters, runs every 2 seconds if the timer is running"""
         self.labelLookupsPerSecond.setText(_translate("networkstatus", "Inventory lookups per second: %1").arg(
-            str(Inventory().numberOfInventoryLookupsPerformed / 2)))
+            str(old_div(Inventory().numberOfInventoryLookupsPerformed, 2))))
         Inventory().numberOfInventoryLookupsPerformed = 0
         self.updateNumberOfBytes()
         self.updateNumberOfObjectsToBeSynced()
diff --git a/src/bitmessageqt/newaddresswizard.py b/src/bitmessageqt/newaddresswizard.py
index b428c0f5..ea943808 100644
--- a/src/bitmessageqt/newaddresswizard.py
+++ b/src/bitmessageqt/newaddresswizard.py
@@ -1,5 +1,12 @@
 #!/usr/bin/env python2.7
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
 from PyQt4 import QtCore, QtGui
 
 class NewAddressWizardIntroPage(QtGui.QWizardPage):
diff --git a/src/bitmessageqt/newchandialog.py b/src/bitmessageqt/newchandialog.py
index dc7b120b..9e21c179 100644
--- a/src/bitmessageqt/newchandialog.py
+++ b/src/bitmessageqt/newchandialog.py
@@ -4,7 +4,14 @@ src/bitmessageqt/newchandialog.py
 
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from PyQt4 import QtCore, QtGui
 
 from . import widgets
@@ -67,7 +74,7 @@ class NewChanDialog(QtGui.QDialog, RetranslateMixin):
         addressGeneratorReturnValue = apiAddressGeneratorReturnQueue.get(True)
         if addressGeneratorReturnValue and addressGeneratorReturnValue[0] != 'chan name does not match address':
             UISignalQueue.put(('updateStatusBar', _translate(
-                "newchandialog", "Successfully created / joined chan %1").arg(unicode(self.chanPassPhrase.text()))))
+                "newchandialog", "Successfully created / joined chan %1").arg(str(self.chanPassPhrase.text()))))
             self.parent.ui.tabWidget.setCurrentIndex(
                 self.parent.ui.tabWidget.indexOf(self.parent.ui.chans)
             )
diff --git a/src/bitmessageqt/retranslateui.py b/src/bitmessageqt/retranslateui.py
index 7e1a7fbe..62969614 100644
--- a/src/bitmessageqt/retranslateui.py
+++ b/src/bitmessageqt/retranslateui.py
@@ -1,4 +1,12 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
+from builtins import object
 from os import path
 from PyQt4 import QtGui
 from debug import logger
@@ -8,7 +16,7 @@ class RetranslateMixin(object):
     def retranslateUi(self):
         defaults = QtGui.QWidget()
         widgets.load(self.__class__.__name__.lower() + '.ui', defaults)
-        for attr, value in defaults.__dict__.iteritems():
+        for attr, value in defaults.__dict__.items():
             setTextMethod = getattr(value, "setText", None)
             if callable(setTextMethod):
                 getattr(self, attr).setText(getattr(defaults, attr).text())
diff --git a/src/bitmessageqt/safehtmlparser.py b/src/bitmessageqt/safehtmlparser.py
index d1d7910c..a29b6522 100644
--- a/src/bitmessageqt/safehtmlparser.py
+++ b/src/bitmessageqt/safehtmlparser.py
@@ -1,8 +1,16 @@
-from HTMLParser import HTMLParser
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from html.parser import HTMLParser
 import inspect
 import re
-from urllib import quote, quote_plus
-from urlparse import urlparse
+from urllib.parse import quote, quote_plus
+from urllib.parse import urlparse
 
 class SafeHTMLParser(HTMLParser):
     # from html5lib.sanitiser
@@ -99,9 +107,9 @@ class SafeHTMLParser(HTMLParser):
 
     def feed(self, data):
         try:
-            data = unicode(data, 'utf-8')
+            data = str(data, 'utf-8')
         except UnicodeDecodeError:
-            data = unicode(data, 'utf-8', errors='replace')
+            data = str(data, 'utf-8', errors='replace')
         HTMLParser.feed(self, data)
         tmp = SafeHTMLParser.replace_pre(data)
         tmp = SafeHTMLParser.uriregex1.sub(
diff --git a/src/bitmessageqt/settings.py b/src/bitmessageqt/settings.py
index 3a3db962..b5c07387 100644
--- a/src/bitmessageqt/settings.py
+++ b/src/bitmessageqt/settings.py
@@ -11,7 +11,15 @@ Created: Thu Dec 25 23:21:20 2014
 
 WARNING! All changes made in this file will be lost!
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from sys import platform
 
 from PyQt4 import QtCore, QtGui
diff --git a/src/bitmessageqt/settingsmixin.py b/src/bitmessageqt/settingsmixin.py
index 3d5999e2..7ecec0a4 100644
--- a/src/bitmessageqt/settingsmixin.py
+++ b/src/bitmessageqt/settingsmixin.py
@@ -4,7 +4,16 @@ src/settingsmixin.py
 ====================
 
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
 from PyQt4 import QtCore, QtGui
 
 
diff --git a/src/bitmessageqt/sound.py b/src/bitmessageqt/sound.py
index 9c86a9a4..40ba3fa3 100644
--- a/src/bitmessageqt/sound.py
+++ b/src/bitmessageqt/sound.py
@@ -1,6 +1,13 @@
 # -*- coding: utf-8 -*-
 
 # sound type constants
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 SOUND_NONE = 0
 SOUND_KNOWN = 1
 SOUND_UNKNOWN = 2
diff --git a/src/bitmessageqt/statusbar.py b/src/bitmessageqt/statusbar.py
index 65a5acfb..4f3fa8f5 100644
--- a/src/bitmessageqt/statusbar.py
+++ b/src/bitmessageqt/statusbar.py
@@ -1,5 +1,12 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from PyQt4 import QtCore, QtGui
-from Queue import Queue
+from queue import Queue
 from time import time
 
 class BMStatusBar(QtGui.QStatusBar):
diff --git a/src/bitmessageqt/support.py b/src/bitmessageqt/support.py
index 7336fa28..94d2e754 100644
--- a/src/bitmessageqt/support.py
+++ b/src/bitmessageqt/support.py
@@ -1,4 +1,11 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import ctypes
 from PyQt4 import QtCore, QtGui
 import ssl
diff --git a/src/bitmessageqt/uisignaler.py b/src/bitmessageqt/uisignaler.py
index 055f9097..d142a0df 100644
--- a/src/bitmessageqt/uisignaler.py
+++ b/src/bitmessageqt/uisignaler.py
@@ -1,4 +1,12 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from PyQt4.QtCore import QThread, SIGNAL
 import sys
 
diff --git a/src/bitmessageqt/utils.py b/src/bitmessageqt/utils.py
index 564dbc8b..b6735ac7 100644
--- a/src/bitmessageqt/utils.py
+++ b/src/bitmessageqt/utils.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from PyQt4 import QtGui
 import hashlib
 import os
diff --git a/src/bitmessageqt/widgets.py b/src/bitmessageqt/widgets.py
index 8ef807f2..23c2957a 100644
--- a/src/bitmessageqt/widgets.py
+++ b/src/bitmessageqt/widgets.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from PyQt4 import uic
 import os.path
 import paths
diff --git a/src/fallback/__init__.py b/src/fallback/__init__.py
index d45c754d..098aae15 100644
--- a/src/fallback/__init__.py
+++ b/src/fallback/__init__.py
@@ -1,7 +1,14 @@
 """
 .. todo:: hello world
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import hashlib
 
 # We need to check hashlib for RIPEMD-160, as it won't be available
diff --git a/src/kivymd/__init__.py b/src/kivymd/__init__.py
index bc07270c..88dd2ab9 100644
--- a/src/kivymd/__init__.py
+++ b/src/kivymd/__init__.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import os
 
 path = os.path.dirname(__file__)
diff --git a/src/kivymd/accordion.py b/src/kivymd/accordion.py
index 6e816ca6..218b70a8 100644
--- a/src/kivymd/accordion.py
+++ b/src/kivymd/accordion.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ListProperty, OptionProperty
 from kivy.utils import get_color_from_hex
diff --git a/src/kivymd/backgroundcolorbehavior.py b/src/kivymd/backgroundcolorbehavior.py
index bd98f129..616b5928 100644
--- a/src/kivymd/backgroundcolorbehavior.py
+++ b/src/kivymd/backgroundcolorbehavior.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import BoundedNumericProperty, ReferenceListProperty
 from kivy.uix.widget import Widget
diff --git a/src/kivymd/bottomsheet.py b/src/kivymd/bottomsheet.py
index 901322b0..f129b37e 100644
--- a/src/kivymd/bottomsheet.py
+++ b/src/kivymd/bottomsheet.py
@@ -39,6 +39,13 @@ For :class:`MDListBottomSheet`:
 API
 ---
 '''
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.clock import Clock
 from kivy.lang import Builder
 from kivy.metrics import dp
diff --git a/src/kivymd/button.py b/src/kivymd/button.py
index 75016716..f5fc45dc 100644
--- a/src/kivymd/button.py
+++ b/src/kivymd/button.py
@@ -9,6 +9,13 @@ Buttons
 
 TO-DO: DOCUMENT MODULE
 '''
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.clock import Clock
 from kivy.lang import Builder
 from kivy.metrics import dp
diff --git a/src/kivymd/card.py b/src/kivymd/card.py
index d411644b..4a512228 100644
--- a/src/kivymd/card.py
+++ b/src/kivymd/card.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import BoundedNumericProperty, ReferenceListProperty, ListProperty,BooleanProperty
 from kivy.uix.boxlayout import BoxLayout
diff --git a/src/kivymd/color_definitions.py b/src/kivymd/color_definitions.py
index c81bd731..a7c19c59 100644
--- a/src/kivymd/color_definitions.py
+++ b/src/kivymd/color_definitions.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 colors = {
     'Pink': {
         '50': 'fce4ec',
diff --git a/src/kivymd/date_picker.py b/src/kivymd/date_picker.py
index 9f361cd8..a54c8ec4 100644
--- a/src/kivymd/date_picker.py
+++ b/src/kivymd/date_picker.py
@@ -1,5 +1,13 @@
 # -*- coding: utf-8 -*-
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import range
+from builtins import *
 from kivy.lang import Builder
 from kivy.uix.modalview import ModalView
 from kivymd.label import MDLabel
diff --git a/src/kivymd/dialog.py b/src/kivymd/dialog.py
index cb6b7601..a418fe8e 100644
--- a/src/kivymd/dialog.py
+++ b/src/kivymd/dialog.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ObjectProperty, ListProperty
 from kivy.metrics import dp
diff --git a/src/kivymd/elevationbehavior.py b/src/kivymd/elevationbehavior.py
index 19d7985d..53785528 100644
--- a/src/kivymd/elevationbehavior.py
+++ b/src/kivymd/elevationbehavior.py
@@ -1,5 +1,15 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
+from past.utils import old_div
 from kivy.app import App
 from kivy.lang import Builder
 from kivy.properties import (ListProperty, ObjectProperty, NumericProperty)
@@ -75,7 +85,7 @@ class ElevationBehavior(object):
 
     def _update_shadow(self, *args):
         if self.elevation > 0:
-            ratio = self.width / (self.height if self.height != 0 else 1)
+            ratio = old_div(self.width, (self.height if self.height != 0 else 1))
             if ratio > -2 and ratio < 2:
                 self._shadow = App.get_running_app().theme_cls.quad_shadow
                 width = soft_width = self.width * 1.9
@@ -106,19 +116,19 @@ class ElevationBehavior(object):
                 #                 soft_width = self.width + dp(ratio) + dp(self.elevation) * .9
                 #                 height = soft_height = self.height * 1.9
 
-            x = self.center_x - width / 2
-            soft_x = self.center_x - soft_width / 2
+            x = self.center_x - old_div(width, 2)
+            soft_x = self.center_x - old_div(soft_width, 2)
             self._soft_shadow_size = (soft_width, soft_height)
             self._hard_shadow_size = (width, height)
 
-            y = self.center_y - soft_height / 2 - dp(
+            y = self.center_y - old_div(soft_height, 2) - dp(
                 .1 * 1.5 ** self.elevation)
             self._soft_shadow_pos = (soft_x, y)
             self._soft_shadow_a = 0.1 * 1.1 ** self.elevation
             self._soft_shadow_texture = self._shadow.textures[
                 str(int(round(self.elevation - 1)))]
 
-            y = self.center_y - height / 2 - dp(.5 * 1.18 ** self.elevation)
+            y = self.center_y - old_div(height, 2) - dp(.5 * 1.18 ** self.elevation)
             self._hard_shadow_pos = (x, y)
             self._hard_shadow_a = .4 * .9 ** self.elevation
             self._hard_shadow_texture = self._shadow.textures[
@@ -165,18 +175,18 @@ class RoundElevationBehavior(object):
             width = self.width * 2
             height = self.height * 2
 
-            x = self.center_x - width / 2
+            x = self.center_x - old_div(width, 2)
             self._soft_shadow_size = (width, height)
 
             self._hard_shadow_size = (width, height)
 
-            y = self.center_y - height / 2 - dp(.1 * 1.5 ** self.elevation)
+            y = self.center_y - old_div(height, 2) - dp(.1 * 1.5 ** self.elevation)
             self._soft_shadow_pos = (x, y)
             self._soft_shadow_a = 0.1 * 1.1 ** self.elevation
             self._soft_shadow_texture = self._shadow.textures[
                 str(int(round(self.elevation)))]
 
-            y = self.center_y - height / 2 - dp(.5 * 1.18 ** self.elevation)
+            y = self.center_y - old_div(height, 2) - dp(.5 * 1.18 ** self.elevation)
             self._hard_shadow_pos = (x, y)
             self._hard_shadow_a = .4 * .9 ** self.elevation
             self._hard_shadow_texture = self._shadow.textures[
diff --git a/src/kivymd/grid.py b/src/kivymd/grid.py
index db310193..9b588e49 100644
--- a/src/kivymd/grid.py
+++ b/src/kivymd/grid.py
@@ -1,4 +1,12 @@
 # coding=utf-8
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from kivy.lang import Builder
 from kivy.properties import StringProperty, BooleanProperty, ObjectProperty, \
     NumericProperty, ListProperty, OptionProperty
@@ -154,14 +162,14 @@ class SmartTileWithLabel(SmartTile):
     """Determines the text for the box footer/header"""
 
 
-class IBoxOverlay():
+class IBoxOverlay(object):
     """An interface to specify widgets that belong to to the image overlay
     in the :class:`SmartTile` widget when added as a child.
     """
     pass
 
 
-class IOverlay():
+class IOverlay(object):
     """An interface to specify widgets that belong to to the image overlay
     in the :class:`SmartTile` widget when added as a child.
     """
diff --git a/src/kivymd/icon_definitions.py b/src/kivymd/icon_definitions.py
index 5b717356..d282dd9b 100644
--- a/src/kivymd/icon_definitions.py
+++ b/src/kivymd/icon_definitions.py
@@ -8,6 +8,13 @@
 
 # LAST UPDATED: version 2.2.0 of Material Design Iconic Font
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 md_icons = {
     '3d-rotation': u'',
 
diff --git a/src/kivymd/label.py b/src/kivymd/label.py
index 844f2a07..e0720b28 100644
--- a/src/kivymd/label.py
+++ b/src/kivymd/label.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.metrics import sp
 from kivy.properties import OptionProperty, DictProperty, ListProperty
diff --git a/src/kivymd/list.py b/src/kivymd/list.py
index 36162329..4823d2ef 100644
--- a/src/kivymd/list.py
+++ b/src/kivymd/list.py
@@ -139,7 +139,15 @@ Python example:
 API
 ---
 '''
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from kivy.lang import Builder
 from kivy.metrics import dp
 from kivy.properties import ObjectProperty, StringProperty, NumericProperty, \
@@ -338,7 +346,7 @@ class BaseListItem(ThemableBehavior, RectangularRippleBehavior,
     _num_lines = 2
 
 
-class ILeftBody:
+class ILeftBody(object):
     '''Pseudo-interface for widgets that go in the left container for
     ListItems that support it.
 
@@ -347,14 +355,14 @@ class ILeftBody:
     pass
 
 
-class ILeftBodyTouch:
+class ILeftBodyTouch(object):
     '''Same as :class:`~ILeftBody`, but allows the widget to receive touch
     events instead of triggering the ListItem's ripple effect
     '''
     pass
 
 
-class IRightBody:
+class IRightBody(object):
     '''Pseudo-interface for widgets that go in the right container for
     ListItems that support it.
 
@@ -363,14 +371,14 @@ class IRightBody:
     pass
 
 
-class IRightBodyTouch:
+class IRightBodyTouch(object):
     '''Same as :class:`~IRightBody`, but allows the widget to receive touch
     events instead of triggering the ListItem's ripple effect
     '''
     pass
 
 
-class ContainerSupport:
+class ContainerSupport(object):
     '''Overrides add_widget in a ListItem to include support for I*Body
     widgets when the appropiate containers are present.
     '''
diff --git a/src/kivymd/material_resources.py b/src/kivymd/material_resources.py
index 46270e5c..047e72d8 100644
--- a/src/kivymd/material_resources.py
+++ b/src/kivymd/material_resources.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy import platform
 from kivy.core.window import Window
 from kivy.metrics import dp
diff --git a/src/kivymd/menu.py b/src/kivymd/menu.py
index f4c96ac8..82dcbd71 100644
--- a/src/kivymd/menu.py
+++ b/src/kivymd/menu.py
@@ -1,4 +1,12 @@
 # -*- coding: utf-8 -*-
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from past.utils import old_div
 from kivy.animation import Animation
 from kivy.clock import Clock
 from kivy.core.window import Window
@@ -109,7 +117,7 @@ class MDDropdownMenu(ThemableBehavior, BoxLayout):
         if target_width > Window.width:
             # ...reduce our multiplier to max allowed.
             target_width = int(
-                Window.width / m_res.STANDARD_INCREMENT) * m_res.STANDARD_INCREMENT
+                old_div(Window.width, m_res.STANDARD_INCREMENT)) * m_res.STANDARD_INCREMENT
 
         target_height = sum([dp(48) for i in self.items])
         # If we're over max_height...
diff --git a/src/kivymd/navigationdrawer.py b/src/kivymd/navigationdrawer.py
index 42aa9a62..b6cb447b 100644
--- a/src/kivymd/navigationdrawer.py
+++ b/src/kivymd/navigationdrawer.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.animation import Animation
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ObjectProperty
diff --git a/src/kivymd/progressbar.py b/src/kivymd/progressbar.py
index 6d3a2ca8..911a713a 100644
--- a/src/kivymd/progressbar.py
+++ b/src/kivymd/progressbar.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import ListProperty, OptionProperty, BooleanProperty
 from kivy.utils import get_color_from_hex
diff --git a/src/kivymd/ripplebehavior.py b/src/kivymd/ripplebehavior.py
index 21dd3463..d672e895 100644
--- a/src/kivymd/ripplebehavior.py
+++ b/src/kivymd/ripplebehavior.py
@@ -1,4 +1,13 @@
 # -*- coding: utf-8 -*-
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from past.utils import old_div
+from builtins import object
 from kivy.properties import ListProperty, NumericProperty, StringProperty, \
     BooleanProperty
 from kivy.animation import Animation
@@ -146,10 +155,10 @@ class CircularRippleBehavior(CommonRipple):
             StencilPush()
             self.stencil = Ellipse(size=(self.width * self.ripple_scale,
                                          self.height * self.ripple_scale),
-                                   pos=(self.center_x - (
-                                       self.width * self.ripple_scale) / 2,
-                                        self.center_y - (
-                                            self.height * self.ripple_scale) / 2))
+                                   pos=(self.center_x - old_div((
+                                       self.width * self.ripple_scale), 2),
+                                        self.center_y - old_div((
+                                            self.height * self.ripple_scale), 2)))
             StencilUse()
             self.col_instruction = Color(rgba=self.ripple_color)
             self.ellipse = Ellipse(size=(self.ripple_rad, self.ripple_rad),
diff --git a/src/kivymd/selectioncontrols.py b/src/kivymd/selectioncontrols.py
index b918428a..77e19dbf 100644
--- a/src/kivymd/selectioncontrols.py
+++ b/src/kivymd/selectioncontrols.py
@@ -1,5 +1,13 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from past.utils import old_div
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ListProperty, NumericProperty
 from kivy.uix.behaviors import ToggleButtonBehavior
@@ -124,8 +132,8 @@ class Thumb(RoundElevationBehavior, CircularRippleBehavior, ButtonBehavior,
         self.ellipse.pos = (self.center_x - self.ripple_rad / 2.,
                             self.center_y - self.ripple_rad / 2.)
         self.stencil.pos = (
-            self.center_x - (self.width * self.ripple_scale) / 2,
-            self.center_y - (self.height * self.ripple_scale) / 2)
+            self.center_x - old_div((self.width * self.ripple_scale), 2),
+            self.center_y - old_div((self.height * self.ripple_scale), 2))
 
 
 class MDSwitch(ThemableBehavior, ButtonBehavior, FloatLayout):
diff --git a/src/kivymd/slider.py b/src/kivymd/slider.py
index 1166bea7..7a00e7d9 100644
--- a/src/kivymd/slider.py
+++ b/src/kivymd/slider.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ListProperty, NumericProperty,AliasProperty, BooleanProperty
 from kivy.utils import get_color_from_hex
diff --git a/src/kivymd/slidingpanel.py b/src/kivymd/slidingpanel.py
index b818505a..68df20d2 100644
--- a/src/kivymd/slidingpanel.py
+++ b/src/kivymd/slidingpanel.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.animation import Animation
 from kivy.clock import Clock
 from kivy.core.window import Window
diff --git a/src/kivymd/snackbar.py b/src/kivymd/snackbar.py
index e0ac70e8..e78f5dca 100644
--- a/src/kivymd/snackbar.py
+++ b/src/kivymd/snackbar.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from collections import deque
 from kivy.animation import Animation
 from kivy.clock import Clock
diff --git a/src/kivymd/spinner.py b/src/kivymd/spinner.py
index 238062db..b5bf2a59 100644
--- a/src/kivymd/spinner.py
+++ b/src/kivymd/spinner.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.uix.widget import Widget
 from kivy.properties import NumericProperty, ListProperty, BooleanProperty
diff --git a/src/kivymd/tabs.py b/src/kivymd/tabs.py
index c09f21c2..aec8dc1c 100644
--- a/src/kivymd/tabs.py
+++ b/src/kivymd/tabs.py
@@ -1,3 +1,7 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 # Created on Jul 8, 2016
 #
 # The default kivy tab implementation seems like a stupid design to me. The
@@ -5,6 +9,10 @@
 #
 # @author: jrm
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from kivy.properties import StringProperty, DictProperty, ListProperty, \
     ObjectProperty, OptionProperty, BoundedNumericProperty
 from kivy.uix.screenmanager import Screen
diff --git a/src/kivymd/textfields.py b/src/kivymd/textfields.py
index 18de10e6..fb78d584 100644
--- a/src/kivymd/textfields.py
+++ b/src/kivymd/textfields.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.uix.textinput import TextInput
 from kivy.properties import ObjectProperty, NumericProperty, StringProperty, \
diff --git a/src/kivymd/theme_picker.py b/src/kivymd/theme_picker.py
index e5104ce6..d94ce62c 100644
--- a/src/kivymd/theme_picker.py
+++ b/src/kivymd/theme_picker.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.uix.modalview import ModalView
 from kivy.uix.floatlayout import FloatLayout
diff --git a/src/kivymd/theming.py b/src/kivymd/theming.py
index 3172ee58..cec50008 100644
--- a/src/kivymd/theming.py
+++ b/src/kivymd/theming.py
@@ -1,4 +1,12 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from kivy.app import App
 from kivy.core.text import LabelBase
 from kivy.core.window import Window
diff --git a/src/kivymd/time_picker.py b/src/kivymd/time_picker.py
index 6de6fc20..b4b6bfab 100644
--- a/src/kivymd/time_picker.py
+++ b/src/kivymd/time_picker.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.lang import Builder
 from kivy.uix.modalview import ModalView
 from kivy.uix.floatlayout import FloatLayout
diff --git a/src/kivymd/toolbar.py b/src/kivymd/toolbar.py
index fc7b146c..eb71f07e 100644
--- a/src/kivymd/toolbar.py
+++ b/src/kivymd/toolbar.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.clock import Clock
 from kivy.lang import Builder
 from kivy.metrics import dp
diff --git a/src/messagetypes/__init__.py b/src/messagetypes/__init__.py
index 06783eac..e643bbc2 100644
--- a/src/messagetypes/__init__.py
+++ b/src/messagetypes/__init__.py
@@ -1,3 +1,11 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from importlib import import_module
 from os import path, listdir
 from string import lower
diff --git a/src/messagetypes/message.py b/src/messagetypes/message.py
index f52c6b35..93f5c6b8 100644
--- a/src/messagetypes/message.py
+++ b/src/messagetypes/message.py
@@ -1,3 +1,11 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 from debug import logger
 from messagetypes import MsgBase
 
@@ -9,13 +17,13 @@ class Message(MsgBase):
     def decode(self, data):
         # UTF-8 and variable type validator
         if type(data["subject"]) is str:
-            self.subject = unicode(data["subject"], 'utf-8', 'replace')
+            self.subject = str(data["subject"], 'utf-8', 'replace')
         else:
-            self.subject = unicode(str(data["subject"]), 'utf-8', 'replace')
+            self.subject = str(str(data["subject"]), 'utf-8', 'replace')
         if type(data["body"]) is str:
-            self.body = unicode(data["body"], 'utf-8', 'replace')
+            self.body = str(data["body"], 'utf-8', 'replace')
         else:
-            self.body = unicode(str(data["body"]), 'utf-8', 'replace')
+            self.body = str(str(data["body"]), 'utf-8', 'replace')
 
     def encode(self, data):
         super(Message, self).encode()
diff --git a/src/messagetypes/vote.py b/src/messagetypes/vote.py
index df8d267f..9f8dccc4 100644
--- a/src/messagetypes/vote.py
+++ b/src/messagetypes/vote.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from debug import logger
 from messagetypes import MsgBase
 
diff --git a/src/navigationdrawer/__init__.py b/src/navigationdrawer/__init__.py
index a8fa5ce7..2f55baed 100644
--- a/src/navigationdrawer/__init__.py
+++ b/src/navigationdrawer/__init__.py
@@ -1,4 +1,11 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from kivy.animation import Animation
 from kivy.lang import Builder
 from kivy.properties import StringProperty, ObjectProperty
diff --git a/src/network/addrthread.py b/src/network/addrthread.py
index b0cad683..49ae5389 100644
--- a/src/network/addrthread.py
+++ b/src/network/addrthread.py
@@ -1,4 +1,12 @@
-import Queue
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
+import queue
 import threading
 
 import addresses
@@ -23,7 +31,7 @@ class AddrThread(threading.Thread, StoppableThread):
                     chunk.append((data[0], data[1]))
                     if len(data) > 2:
                         source = BMConnectionPool().getConnectionByAddr(data[2])
-                except Queue.Empty:
+                except queue.Empty:
                     break
                 except KeyError:
                     continue
diff --git a/src/network/advanceddispatcher.py b/src/network/advanceddispatcher.py
index c8f125f0..855a96c8 100644
--- a/src/network/advanceddispatcher.py
+++ b/src/network/advanceddispatcher.py
@@ -2,8 +2,16 @@
 src/network/advanceddispatcher.py
 =================================
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 # pylint: disable=attribute-defined-outside-init
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import socket
 import threading
 import time
diff --git a/src/network/announcethread.py b/src/network/announcethread.py
index 60f17e29..bf47a9de 100644
--- a/src/network/announcethread.py
+++ b/src/network/announcethread.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import threading
 import time
 
@@ -26,7 +33,7 @@ class AnnounceThread(threading.Thread, StoppableThread):
                 self.stop.wait(10)
 
     def announceSelf(self):
-        for connection in BMConnectionPool().udpSockets.values():
+        for connection in list(BMConnectionPool().udpSockets.values()):
             if not connection.announcing:
                 continue
             for stream in state.streamsInWhichIAmParticipating:
diff --git a/src/network/asyncore_pollchoose.py b/src/network/asyncore_pollchoose.py
index 3f7af951..b3fbf3fa 100644
--- a/src/network/asyncore_pollchoose.py
+++ b/src/network/asyncore_pollchoose.py
@@ -51,7 +51,15 @@ many of the difficult problems for you, making the task of building
 sophisticated high-performance network servers and clients a snap.
 """
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from builtins import object
 import os
 import select
 import socket
@@ -366,7 +374,7 @@ def epoll_poller(timeout=0.0, map=None):
     except AttributeError:
         epoll_poller.pollster = select.epoll()
     if map:
-        for fd, obj in map.items():
+        for fd, obj in list(map.items()):
             flags = newflags = 0
             if obj.readable():
                 flags |= select.POLLIN | select.POLLPRI
@@ -424,7 +432,7 @@ def kqueue_poller(timeout=0.0, map=None):
     if map:
         updates = []
         selectables = 0
-        for fd, obj in map.items():
+        for fd, obj in list(map.items()):
             kq_filter = 0
             if obj.readable():
                 kq_filter |= 1
@@ -521,7 +529,7 @@ def loop(timeout=30.0, use_poll=False, map=None, count=None, poller=None):
             count = count - 1
 
 
-class dispatcher:
+class dispatcher(object):
     """Dispatcher for socket objects"""
     # pylint: disable=too-many-public-methods,too-many-instance-attributes,old-style-class
 
@@ -999,7 +1007,7 @@ def close_all(map=None, ignore_all=False):
 if os.name == 'posix':
     import fcntl
 
-    class file_wrapper:
+    class file_wrapper(object):
         """
         Here we override just enough to make a file look like a socket for the purposes of asyncore.
 
diff --git a/src/network/connectionchooser.py b/src/network/connectionchooser.py
index e116ec53..df10c80b 100644
--- a/src/network/connectionchooser.py
+++ b/src/network/connectionchooser.py
@@ -1,3 +1,11 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
 import random  # nosec
 
 import knownnodes
@@ -10,7 +18,7 @@ from queues import Queue, portCheckerQueue
 
 def getDiscoveredPeer():
     try:
-        peer = random.choice(state.discoveredPeers.keys())
+        peer = random.choice(list(state.discoveredPeers.keys()))
     except (IndexError, KeyError):
         raise ValueError
     try:
@@ -36,7 +44,7 @@ def chooseConnection(stream):
         # discovered peers are already filtered by allowed streams
         return getDiscoveredPeer()
     for _ in range(50):
-        peer = random.choice(knownnodes.knownNodes[stream].keys())
+        peer = random.choice(list(knownnodes.knownNodes[stream].keys()))
         try:
             rating = knownnodes.knownNodes[stream][peer]['rating']
         except TypeError:
diff --git a/src/network/downloadthread.py b/src/network/downloadthread.py
index 22b29154..138d1537 100644
--- a/src/network/downloadthread.py
+++ b/src/network/downloadthread.py
@@ -1,4 +1,11 @@
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from past.utils import old_div
 import threading
 import time
 
@@ -28,7 +35,7 @@ class DownloadThread(threading.Thread, StoppableThread):
     def cleanPending(self):
         deadline = time.time() - DownloadThread.requestExpires
         try:
-            toDelete = [k for k, v in missingObjects.iteritems() if v < deadline]
+            toDelete = [k for k, v in missingObjects.items() if v < deadline]
         except RuntimeError:
             pass
         else:
@@ -40,10 +47,10 @@ class DownloadThread(threading.Thread, StoppableThread):
         while not self._stopped:
             requested = 0
             # Choose downloading peers randomly
-            connections = [x for x in BMConnectionPool().inboundConnections.values() + BMConnectionPool().outboundConnections.values() if x.fullyEstablished]
+            connections = [x for x in list(BMConnectionPool().inboundConnections.values()) + list(BMConnectionPool().outboundConnections.values()) if x.fullyEstablished]
             helper_random.randomshuffle(connections)
             try:
-                requestChunk =  max(int(min(DownloadThread.maxRequestChunk, len(missingObjects)) / len(connections)), 1)
+                requestChunk =  max(int(old_div(min(DownloadThread.maxRequestChunk, len(missingObjects)), len(connections))), 1)
             except ZeroDivisionError:
                 requestChunk = 1
             for i in connections:
diff --git a/src/network/fix_circular_imports.py b/src/network/fix_circular_imports.py
index 0bc04656..956a245d 100644
--- a/src/network/fix_circular_imports.py
+++ b/src/network/fix_circular_imports.py
@@ -1,4 +1,7 @@
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
 
 
 
@@ -10,6 +13,14 @@ from __future__ import absolute_import
 
 
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import map
+from builtins import str
+from builtins import range
+from builtins import *
+from past.utils import old_div
+from builtins import object
 import time
 
 import protocol
@@ -232,7 +243,7 @@ class ObjectTracker(object):
                 # release memory
                 deadline = time.time() - ObjectTracker.trackingExpires
                 with self.objectsNewToThemLock:
-                    self.objectsNewToThem = {k: v for k, v in self.objectsNewToThem.iteritems() if v >= deadline}
+                    self.objectsNewToThem = {k: v for k, v in self.objectsNewToThem.items() if v >= deadline}
             self.lastCleaned = time.time()
 
     def hasObj(self, hashid):
@@ -254,7 +265,7 @@ class ObjectTracker(object):
         self.objectsNewToMe[hashId] = True
 
     def handleReceivedObject(self, streamNumber, hashid):
-        for i in BMConnectionPool().inboundConnections.values() + BMConnectionPool().outboundConnections.values():
+        for i in list(BMConnectionPool().inboundConnections.values()) + list(BMConnectionPool().outboundConnections.values()):
             if not i.fullyEstablished:
                 continue
             try:
@@ -940,8 +951,8 @@ class BMProto(AdvancedDispatcher, ObjectTracker):
     def stopDownloadingObject(hashId, forwardAnyway=False):
         """Stop downloading an object"""
         for connection in (
-            BMConnectionPool().inboundConnections.values() +
-            BMConnectionPool().outboundConnections.values()
+            list(BMConnectionPool().inboundConnections.values()) +
+            list(BMConnectionPool().outboundConnections.values())
         ):
             try:
                 del connection.objectsNewToMe[hashId]
@@ -1038,7 +1049,7 @@ Stem = namedtuple('Stem', ['child', 'stream', 'timeout'])
 
 
 @Singleton
-class Dandelion():
+class Dandelion(object):
     """Dandelion class for tracking stem/fluff stages."""
     def __init__(self):
         # currently assignable child stems
@@ -1110,12 +1121,12 @@ class Dandelion():
         with self.lock:
             if len(self.stem) < MAX_STEMS:
                 self.stem.append(connection)
-                for k in (k for k, v in self.nodeMap.iteritems() if v is None):
+                for k in (k for k, v in self.nodeMap.items() if v is None):
                     self.nodeMap[k] = connection
                 for k, v in {
-                    k: v for k, v in self.hashMap.iteritems()
+                    k: v for k, v in self.hashMap.items()
                     if v.child is None
-                }.iteritems():
+                }.items():
                     self.hashMap[k] = Stem(
                         connection, v.stream, self.poissonTimeout())
                     invQueue.put((v.stream, k, v.child))
@@ -1131,13 +1142,13 @@ class Dandelion():
                 self.stem.remove(connection)
                 # active mappings to pointing to the removed node
                 for k in (
-                    k for k, v in self.nodeMap.iteritems() if v == connection
+                    k for k, v in self.nodeMap.items() if v == connection
                 ):
                     self.nodeMap[k] = None
                 for k, v in {
-                    k: v for k, v in self.hashMap.iteritems()
+                    k: v for k, v in self.hashMap.items()
                     if v.child == connection
-                }.iteritems():
+                }.items():
                     self.hashMap[k] = Stem(
                         None, v.stream, self.poissonTimeout())
 
@@ -1148,7 +1159,7 @@ class Dandelion():
         """
         try:
             # pick a random from available stems
-            stem = choice(range(len(self.stem)))
+            stem = choice(list(range(len(self.stem))))
             if self.stem[stem] == parent:
                 # one stem available and it's the parent
                 if len(self.stem) == 1:
@@ -1178,7 +1189,7 @@ class Dandelion():
         with self.lock:
             deadline = time.time()
             toDelete = [
-                [v.stream, k, v.child] for k, v in self.hashMap.iteritems()
+                [v.stream, k, v.child] for k, v in self.hashMap.items()
                 if v.timeout < deadline
             ]
 
@@ -1193,12 +1204,12 @@ class Dandelion():
             try:
                 # random two connections
                 self.stem = sample(
-                    BMConnectionPool(
-                    ).outboundConnections.values(), MAX_STEMS)
+                    list(BMConnectionPool(
+                    ).outboundConnections.values()), MAX_STEMS)
             # not enough stems available
             except ValueError:
-                self.stem = BMConnectionPool(
-                ).outboundConnections.values()
+                self.stem = list(BMConnectionPool(
+                ).outboundConnections.values())
             self.nodeMap = {}
             # hashMap stays to cater for pending stems
         self.refresh = time.time() + REASSIGN_INTERVAL
@@ -1281,8 +1292,8 @@ class BMConnectionPool(object):
     def isAlreadyConnected(self, nodeid):
         """Check if we're already connected to this peer"""
         for i in (
-            self.inboundConnections.values() +
-            self.outboundConnections.values()
+            list(self.inboundConnections.values()) +
+            list(self.outboundConnections.values())
         ):
             try:
                 if nodeid == i.nodeid:
@@ -1414,7 +1425,7 @@ class BMConnectionPool(object):
                 except ValueError:
                     Proxy.onion_proxy = None
             established = sum(
-                1 for c in self.outboundConnections.values()
+                1 for c in list(self.outboundConnections.values())
                 if (c.connected and c.fullyEstablished))
             pending = len(self.outboundConnections) - established
             if established < BMConfigParser().safeGetInt(
@@ -1454,8 +1465,8 @@ class BMConnectionPool(object):
                     self.lastSpawned = time.time()
         else:
             for i in (
-                self.inboundConnections.values() +
-                self.outboundConnections.values()
+                list(self.inboundConnections.values()) +
+                list(self.outboundConnections.values())
             ):
                 # FIXME: rating will be increased after next connection
                 i.handle_close()
@@ -1484,12 +1495,12 @@ class BMConnectionPool(object):
                 logger.info('Starting UDP socket(s).')
         else:
             if self.listeningSockets:
-                for i in self.listeningSockets.values():
+                for i in list(self.listeningSockets.values()):
                     i.close_reason = "Stopping listening"
                     i.accepting = i.connecting = i.connected = False
                 logger.info('Stopped listening for incoming connections.')
             if self.udpSockets:
-                for i in self.udpSockets.values():
+                for i in list(self.udpSockets.values()):
                     i.close_reason = "Stopping UDP socket"
                     i.accepting = i.connecting = i.connected = False
                 logger.info('Stopped udp sockets.')
@@ -1501,8 +1512,8 @@ class BMConnectionPool(object):
 
         reaper = []
         for i in (
-            self.inboundConnections.values() +
-            self.outboundConnections.values()
+            list(self.inboundConnections.values()) +
+            list(self.outboundConnections.values())
         ):
             minTx = time.time() - 20
             if i.fullyEstablished:
@@ -1515,10 +1526,10 @@ class BMConnectionPool(object):
                         time.time() - i.lastTx)
                     i.set_state("close")
         for i in (
-            self.inboundConnections.values() +
-            self.outboundConnections.values() +
-            self.listeningSockets.values() +
-            self.udpSockets.values()
+            list(self.inboundConnections.values()) +
+            list(self.outboundConnections.values()) +
+            list(self.listeningSockets.values()) +
+            list(self.udpSockets.values())
         ):
             if not (i.accepting or i.connecting or i.connected):
                 reaper.append(i)
@@ -1695,7 +1706,7 @@ class TCPConnection(BMProto, TLSDispatcher):
                     # only if more recent than 3 hours
                     # and having positive or neutral rating
                     filtered = [
-                        (k, v) for k, v in nodes.iteritems()
+                        (k, v) for k, v in nodes.items()
                         if v["lastseen"] > int(time.time()) -
                         shared.maximumAgeOfNodesThatIAdvertiseToOthers and
                         v["rating"] >= 0 and len(k.host) <= 22
@@ -1703,7 +1714,7 @@ class TCPConnection(BMProto, TLSDispatcher):
                     # sent 250 only if the remote isn't interested in it
                     elemCount = min(
                         len(filtered),
-                        maxAddrCount / 2 if n else maxAddrCount)
+                        old_div(maxAddrCount, 2) if n else maxAddrCount)
                     addrs[s] = helper_random.randomsample(filtered, elemCount)
         for substream in addrs:
             for peer, params in addrs[substream]:
@@ -1741,7 +1752,7 @@ class TCPConnection(BMProto, TLSDispatcher):
         payload = b''
         # Now let us start appending all of these hashes together. They will be
         # sent out in a big inv message to our new peer.
-        for obj_hash, _ in bigInvList.items():
+        for obj_hash, _ in list(bigInvList.items()):
             payload += obj_hash
             objectCount += 1
 
diff --git a/src/network/http-old.py b/src/network/http-old.py
index ec133330..3356afc5 100644
--- a/src/network/http-old.py
+++ b/src/network/http-old.py
@@ -1,4 +1,12 @@
 from __future__ import print_function
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
+from past.utils import old_div
 import asyncore
 import socket
 import time
@@ -45,6 +53,6 @@ if __name__ == "__main__":
             for i in range(parallel - len(asyncore.socket_map)):
                 HTTPClient('127.0.0.1', '/')
         print("Active connections: %i" % (len(asyncore.socket_map)))
-        asyncore.loop(count=len(asyncore.socket_map)/2)
+        asyncore.loop(count=old_div(len(asyncore.socket_map),2))
         if requestCount % 100 == 0:
             print("Processed %i total messages" % (requestCount))
diff --git a/src/network/http.py b/src/network/http.py
index 3b21b853..6e1c4782 100644
--- a/src/network/http.py
+++ b/src/network/http.py
@@ -1,5 +1,10 @@
 from __future__ import print_function
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import socket
 
 from .advanceddispatcher import AdvancedDispatcher
diff --git a/src/network/httpd.py b/src/network/httpd.py
index d3a81dac..8fb6b06e 100644
--- a/src/network/httpd.py
+++ b/src/network/httpd.py
@@ -1,4 +1,10 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import asyncore
 import socket
 
diff --git a/src/network/https.py b/src/network/https.py
index c5094430..6da74477 100644
--- a/src/network/https.py
+++ b/src/network/https.py
@@ -1,4 +1,10 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import asyncore
 
 from .http import HTTPClient
diff --git a/src/network/invthread.py b/src/network/invthread.py
index 5893784b..717ced21 100644
--- a/src/network/invthread.py
+++ b/src/network/invthread.py
@@ -1,4 +1,12 @@
-import Queue
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
+import queue
 from random import randint, shuffle
 import threading
 from time import time
@@ -18,8 +26,8 @@ def handleExpiredDandelion(expired):
     if not expired:
         return
     for i in \
-        BMConnectionPool().inboundConnections.values() + \
-            BMConnectionPool().outboundConnections.values():
+        list(BMConnectionPool().inboundConnections.values()) + \
+            list(BMConnectionPool().outboundConnections.values()):
         if not i.fullyEstablished:
             continue
         for x in expired:
@@ -41,8 +49,8 @@ class InvThread(threading.Thread, StoppableThread):
     def handleLocallyGenerated(self, stream, hashId):
         Dandelion().addHash(hashId, stream=stream)
         for connection in \
-                BMConnectionPool().inboundConnections.values() + \
-                BMConnectionPool().outboundConnections.values():
+                list(BMConnectionPool().inboundConnections.values()) + \
+                list(BMConnectionPool().outboundConnections.values()):
                 if state.dandelion and connection != Dandelion().objectChildStem(hashId):
                     continue
                 connection.objectsNewToThem[hashId] = time()
@@ -59,12 +67,12 @@ class InvThread(threading.Thread, StoppableThread):
                     # locally generated
                     if len(data) == 2 or data[2] is None:
                         self.handleLocallyGenerated(data[0], data[1])
-                except Queue.Empty:
+                except queue.Empty:
                     break
 
             if chunk:
-                for connection in BMConnectionPool().inboundConnections.values() + \
-                        BMConnectionPool().outboundConnections.values():
+                for connection in list(BMConnectionPool().inboundConnections.values()) + \
+                        list(BMConnectionPool().outboundConnections.values()):
                     fluffs = []
                     stems = []
                     for inv in chunk:
diff --git a/src/network/networkthread.py b/src/network/networkthread.py
index ecf7ae8d..b29c366e 100644
--- a/src/network/networkthread.py
+++ b/src/network/networkthread.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import threading
 
 import network.asyncore_pollchoose as asyncore
@@ -25,17 +32,17 @@ class BMNetworkThread(threading.Thread, StoppableThread):
 
     def stopThread(self):
         super(BMNetworkThread, self).stopThread()
-        for i in BMConnectionPool().listeningSockets.values():
+        for i in list(BMConnectionPool().listeningSockets.values()):
             try:
                 i.close()
             except:
                 pass
-        for i in BMConnectionPool().outboundConnections.values():
+        for i in list(BMConnectionPool().outboundConnections.values()):
             try:
                 i.close()
             except:
                 pass
-        for i in BMConnectionPool().inboundConnections.values():
+        for i in list(BMConnectionPool().inboundConnections.values()):
             try:
                 i.close()
             except:
diff --git a/src/network/node.py b/src/network/node.py
index ab9f5fbe..ef8b32c8 100644
--- a/src/network/node.py
+++ b/src/network/node.py
@@ -1,3 +1,10 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import collections
 
 Node = collections.namedtuple('Node', ['services', 'host', 'port'])
diff --git a/src/network/proxy.py b/src/network/proxy.py
index b389ec45..0682c5a8 100644
--- a/src/network/proxy.py
+++ b/src/network/proxy.py
@@ -1,4 +1,10 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import socket
 import time
 
diff --git a/src/network/receivequeuethread.py b/src/network/receivequeuethread.py
index e679cc7e..7afb1b99 100644
--- a/src/network/receivequeuethread.py
+++ b/src/network/receivequeuethread.py
@@ -1,5 +1,13 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import errno
-import Queue
+import queue
 import socket
 import sys
 import threading
@@ -27,7 +35,7 @@ class ReceiveQueueThread(threading.Thread, StoppableThread):
         while not self._stopped and state.shutdown == 0:
             try:
                 dest = receiveDataQueue.get(block=True, timeout=1)
-            except Queue.Empty:
+            except queue.Empty:
                 continue
 
             if self._stopped or state.shutdown:
diff --git a/src/network/socks4a.py b/src/network/socks4a.py
index 00b4167d..23accefc 100644
--- a/src/network/socks4a.py
+++ b/src/network/socks4a.py
@@ -1,5 +1,11 @@
 from __future__ import print_function
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import chr
+from builtins import *
 import socket
 import struct
 
diff --git a/src/network/socks5.py b/src/network/socks5.py
index 4e3047d0..1190aa56 100644
--- a/src/network/socks5.py
+++ b/src/network/socks5.py
@@ -5,8 +5,15 @@ src/network/socks5.py
 """
 from __future__ import print_function
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import division
 # pylint: disable=attribute-defined-outside-init
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import chr
+from builtins import *
 import socket
 import struct
 
diff --git a/src/network/stats.py b/src/network/stats.py
index 65f9d4cc..c62c1834 100644
--- a/src/network/stats.py
+++ b/src/network/stats.py
@@ -1,4 +1,11 @@
 from __future__ import absolute_import
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from past.utils import old_div
 import time
 
 from . import asyncore_pollchoose as asyncore
@@ -13,8 +20,8 @@ currentSentSpeed = 0
 
 def connectedHostsList():
     retval = []
-    for i in BMConnectionPool().inboundConnections.values() + \
-            BMConnectionPool().outboundConnections.values():
+    for i in list(BMConnectionPool().inboundConnections.values()) + \
+            list(BMConnectionPool().outboundConnections.values()):
         if not i.fullyEstablished:
             continue
         try:
@@ -31,7 +38,7 @@ def uploadSpeed():
     currentTimestamp = time.time()
     if int(lastSentTimestamp) < int(currentTimestamp):
         currentSentBytes = asyncore.sentBytes
-        currentSentSpeed = int((currentSentBytes - lastSentBytes) / (currentTimestamp - lastSentTimestamp))
+        currentSentSpeed = int(old_div((currentSentBytes - lastSentBytes), (currentTimestamp - lastSentTimestamp)))
         lastSentBytes = currentSentBytes
         lastSentTimestamp = currentTimestamp
     return currentSentSpeed
@@ -44,8 +51,8 @@ def downloadSpeed():
     currentTimestamp = time.time()
     if int(lastReceivedTimestamp) < int(currentTimestamp):
         currentReceivedBytes = asyncore.receivedBytes
-        currentReceivedSpeed = int((currentReceivedBytes - lastReceivedBytes) /
-            (currentTimestamp - lastReceivedTimestamp))
+        currentReceivedSpeed = int(old_div((currentReceivedBytes - lastReceivedBytes),
+            (currentTimestamp - lastReceivedTimestamp)))
         lastReceivedBytes = currentReceivedBytes
         lastReceivedTimestamp = currentTimestamp
     return currentReceivedSpeed
diff --git a/src/network/tls.py b/src/network/tls.py
index c643f46e..3094dfe1 100644
--- a/src/network/tls.py
+++ b/src/network/tls.py
@@ -1,7 +1,15 @@
 """
 SSL/TLS negotiation.
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import os
 import socket
 import ssl
diff --git a/src/network/udp.py b/src/network/udp.py
index 725a2617..7b5c75be 100644
--- a/src/network/udp.py
+++ b/src/network/udp.py
@@ -1,4 +1,11 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import time
 import socket
 
diff --git a/src/network/uploadthread.py b/src/network/uploadthread.py
index ab44be43..71a76f81 100644
--- a/src/network/uploadthread.py
+++ b/src/network/uploadthread.py
@@ -1,7 +1,14 @@
 """
 src/network/uploadthread.py
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 # pylint: disable=unsubscriptable-object
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import threading
 import time
 
@@ -28,8 +35,8 @@ class UploadThread(threading.Thread, StoppableThread):
         while not self._stopped:
             uploaded = 0
             # Choose downloading peers randomly
-            connections = [x for x in BMConnectionPool().inboundConnections.values() +
-                           BMConnectionPool().outboundConnections.values() if x.fullyEstablished]
+            connections = [x for x in list(BMConnectionPool().inboundConnections.values()) +
+                           list(BMConnectionPool().outboundConnections.values()) if x.fullyEstablished]
             helper_random.randomshuffle(connections)
             for i in connections:
                 now = time.time()
diff --git a/src/plugins/indicator_libmessaging.py b/src/plugins/indicator_libmessaging.py
index 36178663..040953e7 100644
--- a/src/plugins/indicator_libmessaging.py
+++ b/src/plugins/indicator_libmessaging.py
@@ -1,5 +1,15 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import zip
+from builtins import str
+from builtins import *
+from builtins import object
 import gi
 gi.require_version('MessagingMenu', '1.0')  # noqa:E402
 from gi.repository import MessagingMenu
@@ -19,9 +29,9 @@ class IndicatorLibmessaging(object):
             return
 
         self._menu = {
-            'send': unicode(_translate('MainWindow', 'Send')),
-            'messages': unicode(_translate('MainWindow', 'Messages')),
-            'subscriptions': unicode(_translate('MainWindow', 'Subscriptions'))
+            'send': str(_translate('MainWindow', 'Send')),
+            'messages': str(_translate('MainWindow', 'Messages')),
+            'subscriptions': str(_translate('MainWindow', 'Subscriptions'))
         }
 
         self.new_message_item = self.new_broadcast_item = None
diff --git a/src/plugins/menu_qrcode.py b/src/plugins/menu_qrcode.py
index 7f21c6b8..eba9c3df 100644
--- a/src/plugins/menu_qrcode.py
+++ b/src/plugins/menu_qrcode.py
@@ -2,8 +2,15 @@
 """
 A menu plugin showing QR-Code for bitmessage address in modal dialog.
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
-import urllib
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+import urllib.request, urllib.parse, urllib.error
 
 import qrcode
 from PyQt4 import QtGui, QtCore
@@ -91,7 +98,7 @@ def connect_plugin(form):
                 return
         dialog.render(
             'bitmessage:%s' % account.address + (
-                '?' + urllib.urlencode({'label': label.encode('utf-8')})
+                '?' + urllib.parse.urlencode({'label': label.encode('utf-8')})
                 if label != account.address else '')
         )
         dialog.exec_()
diff --git a/src/plugins/notification_notify2.py b/src/plugins/notification_notify2.py
index 3fd935c4..4ce34408 100644
--- a/src/plugins/notification_notify2.py
+++ b/src/plugins/notification_notify2.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import gi
 gi.require_version('Notify', '0.7')
 from gi.repository import Notify
diff --git a/src/plugins/plugin.py b/src/plugins/plugin.py
index 6601adaf..adbba08e 100644
--- a/src/plugins/plugin.py
+++ b/src/plugins/plugin.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import pkg_resources
 
 
diff --git a/src/plugins/sound_canberra.py b/src/plugins/sound_canberra.py
index 094901ed..ad5bf2ae 100644
--- a/src/plugins/sound_canberra.py
+++ b/src/plugins/sound_canberra.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from pybitmessage.bitmessageqt import sound
 
 import pycanberra
diff --git a/src/plugins/sound_gstreamer.py b/src/plugins/sound_gstreamer.py
index 062da3f9..4eeab7fe 100644
--- a/src/plugins/sound_gstreamer.py
+++ b/src/plugins/sound_gstreamer.py
@@ -1,5 +1,12 @@
 # -*- coding: utf-8 -*-
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import gi
 gi.require_version('Gst', '1.0')
 from gi.repository import Gst  # noqa: E402
diff --git a/src/plugins/sound_playfile.py b/src/plugins/sound_playfile.py
index c8216d07..c3077d6d 100644
--- a/src/plugins/sound_playfile.py
+++ b/src/plugins/sound_playfile.py
@@ -1,6 +1,13 @@
 # -*- coding: utf-8 -*-
 
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 try:
     import winsound
 
diff --git a/src/pyelliptic/__init__.py b/src/pyelliptic/__init__.py
index 761d08af..0de8250f 100644
--- a/src/pyelliptic/__init__.py
+++ b/src/pyelliptic/__init__.py
@@ -1,7 +1,14 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 # Copyright (C) 2010
 # Author: Yann GUIBET
 # Contact: <yannguibet@gmail.com>
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 __version__ = '1.3'
 
 __all__ = [
diff --git a/src/pyelliptic/arithmetic.py b/src/pyelliptic/arithmetic.py
index 95c85b93..6a8e4499 100644
--- a/src/pyelliptic/arithmetic.py
+++ b/src/pyelliptic/arithmetic.py
@@ -1,5 +1,15 @@
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
 # pylint: disable=missing-docstring,too-many-function-args
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import chr
+from builtins import range
+from builtins import *
+from past.utils import old_div
 import hashlib
 import re
 
@@ -14,7 +24,7 @@ def inv(a, n):
     lm, hm = 1, 0
     low, high = a % n, n
     while low > 1:
-        r = high / low
+        r = old_div(high, low)
         nm, new = hm - lm * r, high - low * r
         lm, low, hm, high = nm, new, lm, low
     return lm % n
@@ -92,9 +102,9 @@ def base10_multiply(a, n):
     if n == 1:
         return a
     if (n % 2) == 0:
-        return base10_double(base10_multiply(a, n / 2))
+        return base10_double(base10_multiply(a, old_div(n, 2)))
     if (n % 2) == 1:
-        return base10_add(base10_double(base10_multiply(a, n / 2)), a)
+        return base10_add(base10_double(base10_multiply(a, old_div(n, 2))), a)
     return None
 
 
diff --git a/src/pyelliptic/cipher.py b/src/pyelliptic/cipher.py
index b597cafa..2986320b 100644
--- a/src/pyelliptic/cipher.py
+++ b/src/pyelliptic/cipher.py
@@ -4,10 +4,18 @@
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from pyelliptic.openssl import OpenSSL
 
 
-class Cipher:
+class Cipher(object):
     """
     Symmetric encryption
 
@@ -40,7 +48,7 @@ class Cipher:
         """
         static method, returns all ciphers available
         """
-        return OpenSSL.cipher_algo.keys()
+        return list(OpenSSL.cipher_algo.keys())
 
     @staticmethod
     def get_blocksize(ciphername):
diff --git a/src/pyelliptic/ecc.py b/src/pyelliptic/ecc.py
index fb0d6773..3964e067 100644
--- a/src/pyelliptic/ecc.py
+++ b/src/pyelliptic/ecc.py
@@ -4,11 +4,19 @@
 src/pyelliptic/ecc.py
 =====================
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 # pylint: disable=protected-access
 
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 from hashlib import sha512
 from struct import pack, unpack
 
@@ -94,7 +102,7 @@ class ECC(object):
         """
         static method, returns the list of all the curves available
         """
-        return OpenSSL.curves.keys()
+        return list(OpenSSL.curves.keys())
 
     def get_curve(self):
         """Encryption object from curve name"""
diff --git a/src/pyelliptic/hash.py b/src/pyelliptic/hash.py
index fb910dd4..6c2dda72 100644
--- a/src/pyelliptic/hash.py
+++ b/src/pyelliptic/hash.py
@@ -4,6 +4,14 @@
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
 
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import zip
+from builtins import *
 from pyelliptic.openssl import OpenSSL
 
 
diff --git a/src/pyelliptic/openssl.py b/src/pyelliptic/openssl.py
index 115bdc08..ad53d57a 100644
--- a/src/pyelliptic/openssl.py
+++ b/src/pyelliptic/openssl.py
@@ -6,13 +6,23 @@
 #
 #  Software slightly changed by Jonathan Warren <bitmessage at-symbol jonwarren.org>
 
+from __future__ import division
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
+from past.utils import old_div
+from builtins import object
 import sys
 import ctypes
 
 OpenSSL = None
 
 
-class CipherName:
+class CipherName(object):
     def __init__(self, name, pointer, blocksize):
         self._name = name
         self._pointer = pointer
@@ -62,7 +72,7 @@ def get_version(library):
     return (version, hexversion, cflags)
 
 
-class _OpenSSL:
+class _OpenSSL(object):
     """
     Wrapper for OpenSSL using ctypes
     """
@@ -434,7 +444,7 @@ class _OpenSSL:
         """
         returns the length of a BN (OpenSSl API)
         """
-        return int((self.BN_num_bits(x) + 7) / 8)
+        return int(old_div((self.BN_num_bits(x) + 7), 8))
 
     def get_cipher(self, name):
         """
diff --git a/src/socks/__init__.py b/src/socks/__init__.py
index 7fd2cba3..cade1589 100644
--- a/src/socks/__init__.py
+++ b/src/socks/__init__.py
@@ -40,7 +40,16 @@ Minor modifications made by Mario Vilas (http://breakingcode.wordpress.com/)
 mainly to merge bug fixes found in Sourceforge
 
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import chr
+from builtins import *
 import socket
 import struct
 import sys
diff --git a/src/storage/filesystem.py b/src/storage/filesystem.py
index 0bee2a16..a0608fb7 100644
--- a/src/storage/filesystem.py
+++ b/src/storage/filesystem.py
@@ -1,5 +1,10 @@
 from __future__ import print_function
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 from binascii import hexlify, unhexlify
 from os import listdir, makedirs, path, remove, rmdir
 import string
@@ -31,13 +36,13 @@ class FilesystemInventory(InventoryStorage):
 
     def __contains__(self, hash):
         retval = False
-        for streamDict in self._inventory.values():
+        for streamDict in list(self._inventory.values()):
             if hash in streamDict:
                 return True
         return False
 
     def __getitem__(self, hash):
-        for streamDict in self._inventory.values():
+        for streamDict in list(self._inventory.values()):
             try:
                 retval = streamDict[hash]
             except KeyError:
@@ -68,7 +73,7 @@ class FilesystemInventory(InventoryStorage):
                 self._inventory[value.stream][hash] = value
 
     def delHashId(self, hash):
-        for stream in self._inventory.keys():
+        for stream in list(self._inventory.keys()):
             try:
                 del self._inventory[stream][hash]
             except KeyError:
@@ -89,13 +94,13 @@ class FilesystemInventory(InventoryStorage):
 
     def __iter__(self):
         elems = []
-        for streamDict in self._inventory.values():
-            elems.extend (streamDict.keys())
+        for streamDict in list(self._inventory.values()):
+            elems.extend (list(streamDict.keys()))
         return elems.__iter__()
 
     def __len__(self):
         retval = 0
-        for streamDict in self._inventory.values():
+        for streamDict in list(self._inventory.values()):
             retval += len(streamDict)
         return retval
 
@@ -117,7 +122,7 @@ class FilesystemInventory(InventoryStorage):
 #            print "loaded stream: %s, %i items" % (i, len(v))
 
     def stream_list(self):
-        return self._inventory.keys()
+        return list(self._inventory.keys())
 
     def object_list(self):
         return [unhexlify(x) for x in listdir(path.join(self.baseDir, FilesystemInventory.objectDir))]
@@ -152,14 +157,14 @@ class FilesystemInventory(InventoryStorage):
 
     def hashes_by_stream(self, stream):
         try:
-            return self._inventory[stream].keys()
+            return list(self._inventory[stream].keys())
         except KeyError:
             return []
 
     def unexpired_hashes_by_stream(self, stream):
         t = int(time.time())
         try:
-            return [x for x, value in self._inventory[stream].items() if value.expires > t]
+            return [x for x, value in list(self._inventory[stream].items()) if value.expires > t]
         except KeyError:
             return []
 
@@ -169,8 +174,8 @@ class FilesystemInventory(InventoryStorage):
     def clean(self):
         minTime = int(time.time()) - (60 * 60 * 30)
         deletes = []
-        for stream, streamDict in self._inventory.items():
-            for hashId, item in streamDict.items():
+        for stream, streamDict in list(self._inventory.items()):
+            for hashId, item in list(streamDict.items()):
                 if item.expires < minTime:
                     deletes.append(hashId)
         for hashId in deletes:
diff --git a/src/storage/sqlite.py b/src/storage/sqlite.py
index dd7209ed..67eb86df 100644
--- a/src/storage/sqlite.py
+++ b/src/storage/sqlite.py
@@ -1,7 +1,14 @@
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import collections
 from threading import current_thread, enumerate as threadingEnumerate, RLock
-import Queue
+import queue
 import sqlite3
 import time
 
@@ -45,7 +52,7 @@ class SqliteInventory(InventoryStorage):
 
     def __iter__(self):
         with self.lock:
-            hashes = self._inventory.keys()[:]
+            hashes = list(self._inventory.keys())[:]
             hashes += (x for x, in sqlQuery('SELECT hash FROM inventory'))
             return hashes.__iter__()
 
@@ -55,21 +62,21 @@ class SqliteInventory(InventoryStorage):
 
     def by_type_and_tag(self, objectType, tag):
         with self.lock:
-            values = [value for value in self._inventory.values() if value.type == objectType and value.tag == tag]
+            values = [value for value in list(self._inventory.values()) if value.type == objectType and value.tag == tag]
             values += (InventoryItem(*value) for value in sqlQuery('SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE objecttype=? AND tag=?', objectType, sqlite3.Binary(tag)))
             return values
 
     def unexpired_hashes_by_stream(self, stream):
         with self.lock:
             t = int(time.time())
-            hashes = [x for x, value in self._inventory.items() if value.stream == stream and value.expires > t]
+            hashes = [x for x, value in list(self._inventory.items()) if value.stream == stream and value.expires > t]
             hashes += (str(payload) for payload, in sqlQuery('SELECT hash FROM inventory WHERE streamnumber=? AND expirestime>?', stream, t))
             return hashes
 
     def flush(self):
         with self.lock: # If you use both the inventoryLock and the sqlLock, always use the inventoryLock OUTSIDE of the sqlLock.
             with SqlBulkExecute() as sql:
-                for objectHash, value in self._inventory.items():
+                for objectHash, value in list(self._inventory.items()):
                     sql.execute('INSERT INTO inventory VALUES (?, ?, ?, ?, ?, ?)', sqlite3.Binary(objectHash), *value)
                 self._inventory.clear()
 
@@ -77,6 +84,6 @@ class SqliteInventory(InventoryStorage):
         with self.lock:
             sqlExecute('DELETE FROM inventory WHERE expirestime<?',int(time.time()) - (60 * 60 * 3))
             self._objects.clear()
-            for objectHash, value in self._inventory.items():
+            for objectHash, value in list(self._inventory.items()):
                 self._objects[objectHash] = value.stream
 
diff --git a/src/storage/storage.py b/src/storage/storage.py
index 08c85708..6dce4aec 100644
--- a/src/storage/storage.py
+++ b/src/storage/storage.py
@@ -1,3 +1,11 @@
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 import collections
 
 InventoryItem = collections.namedtuple('InventoryItem', 'type stream payload expires tag')
diff --git a/src/tests/apinotify_handler.py b/src/tests/apinotify_handler.py
index 43b6eea8..e02455eb 100755
--- a/src/tests/apinotify_handler.py
+++ b/src/tests/apinotify_handler.py
@@ -4,7 +4,13 @@ Utility configured as apinotifypath in bitmessagesettings
 when pybitmessage started in test mode.
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import sys
 import tempfile
 
diff --git a/src/tests/core.py b/src/tests/core.py
index 40c44707..802c2ccf 100644
--- a/src/tests/core.py
+++ b/src/tests/core.py
@@ -3,10 +3,17 @@ Tests for core and those that do not work outside
 (because of import error for example)
 """
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
 import os
 import pickle  # nosec
-import Queue
+import queue
 import random  # nosec
 import string
 import time
@@ -101,9 +108,9 @@ class TestCore(unittest.TestCase):
         pickle_knownnodes()
         self._wipe_knownnodes()
         knownnodes.readKnownNodes()
-        for nodes in knownnodes.knownNodes.itervalues():
+        for nodes in knownnodes.knownNodes.values():
             self_count = n = 0
-            for n, node in enumerate(nodes.itervalues()):
+            for n, node in enumerate(nodes.values()):
                 if node.get('self'):
                     self_count += 1
             self.assertEqual(n - self_count, 2)
@@ -118,15 +125,15 @@ class TestCore(unittest.TestCase):
 
     def test_0_cleaner(self):
         """test knownnodes starvation leading to IndexError in Asyncore"""
-        for nodes in knownnodes.knownNodes.itervalues():
-            for node in nodes.itervalues():
+        for nodes in knownnodes.knownNodes.values():
+            for node in nodes.values():
                 node['lastseen'] -= 2419205  # older than 28 days
         # time.sleep(303)  # singleCleaner wakes up every 5 min
         knownnodes.cleanupKnownNodes()
         while True:
             try:
                 thread, exc = excQueue.get(block=False)
-            except Queue.Empty:
+            except queue.Empty:
                 return
             if thread == 'Asyncore' and isinstance(exc, IndexError):
                 self.fail("IndexError because of empty knownNodes!")
diff --git a/src/tests/test_api.py b/src/tests/test_api.py
index 4fdf9340..6f7732f5 100644
--- a/src/tests/test_api.py
+++ b/src/tests/test_api.py
@@ -2,11 +2,18 @@
 Tests using API.
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import range
+from builtins import *
 import base64
 import json
 import time
-import xmlrpclib  # nosec
+import xmlrpc.client  # nosec
 
 from .test_process import TestProcessProto, TestProcessShutdown
 
@@ -20,7 +27,7 @@ class TestAPIProto(TestProcessProto):
         """Setup XMLRPC proxy for pybitmessage API"""
         super(TestAPIProto, cls).setUpClass()
         cls.addresses = []
-        cls.api = xmlrpclib.ServerProxy(
+        cls.api = xmlrpc.client.ServerProxy(
             "http://username:password@127.0.0.1:8442/")
         for _ in range(5):
             if cls._get_readline('.api_started'):
@@ -53,7 +60,7 @@ class TestAPI(TestAPIProto):
 
     def test_user_password(self):
         """Trying to connect with wrong username/password"""
-        api_wrong = xmlrpclib.ServerProxy("http://test:wrong@127.0.0.1:8442/")
+        api_wrong = xmlrpc.client.ServerProxy("http://test:wrong@127.0.0.1:8442/")
         self.assertEqual(
             api_wrong.clientStatus(),
             'RPC Username or password incorrect or HTTP header lacks'
diff --git a/src/tests/test_config.py b/src/tests/test_config.py
index 1e2dd9f9..eadb6070 100644
--- a/src/tests/test_config.py
+++ b/src/tests/test_config.py
@@ -2,7 +2,13 @@
 Various tests for config
 """
 from __future__ import absolute_import
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
 import os
 import unittest
 
diff --git a/src/tests/test_crypto.py b/src/tests/test_crypto.py
index b7eb7177..e7fbd262 100644
--- a/src/tests/test_crypto.py
+++ b/src/tests/test_crypto.py
@@ -1,11 +1,20 @@
 """
 Test the alternatives for crypto primitives
 """
+from __future__ import unicode_literals
+from __future__ import print_function
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import *
+from builtins import object
 import hashlib
 import unittest
 from abc import ABCMeta, abstractmethod
 from binascii import hexlify, unhexlify
+from future.utils import with_metaclass
 
 try:
     from Crypto.Hash import RIPEMD
@@ -29,10 +38,8 @@ _sha.update(sample_pubsigningkey + sample_pubencryptionkey)
 pubkey_sha = _sha.digest()
 
 
-class RIPEMD160TestCase(object):
+class RIPEMD160TestCase(with_metaclass(ABCMeta, object)):
     """Base class for RIPEMD160 test case"""
-    # pylint: disable=too-few-public-methods,no-member
-    __metaclass__ = ABCMeta
 
     @abstractmethod
     def _hashdigest(self, data):
diff --git a/src/tests/test_process.py b/src/tests/test_process.py
index bf5b58b1..902d7744 100644
--- a/src/tests/test_process.py
+++ b/src/tests/test_process.py
@@ -2,7 +2,14 @@
 Common reusable code for tests and tests for pybitmessage process.
 """
 from __future__ import print_function
+from __future__ import unicode_literals
+from __future__ import division
+from __future__ import absolute_import
 
+from future import standard_library
+standard_library.install_aliases()
+from builtins import str
+from builtins import *
 import os
 import signal
 import subprocess  # nosec