diff --git a/src/messagetypes/__init__.py b/src/messagetypes/__init__.py
index af6bcdaa..4cae718c 100644
--- a/src/messagetypes/__init__.py
+++ b/src/messagetypes/__init__.py
@@ -1,6 +1,6 @@
 import logging
 from importlib import import_module
-from os import path, listdir
+from os import listdir, path
 from string import lower
 
 import messagetypes
diff --git a/src/network/announcethread.py b/src/network/announcethread.py
index 17c8bcd3..19038ab6 100644
--- a/src/network/announcethread.py
+++ b/src/network/announcethread.py
@@ -4,7 +4,6 @@ Announce myself (node address)
 import time
 
 import state
-
 from bmconfigparser import BMConfigParser
 from network.assemble import assemble_addr
 from network.connectionpool import BMConnectionPool
diff --git a/src/network/bmproto.py b/src/network/bmproto.py
index d5d3dbe3..2dcd1208 100644
--- a/src/network/bmproto.py
+++ b/src/network/bmproto.py
@@ -19,9 +19,9 @@ from bmconfigparser import BMConfigParser
 from inventory import Inventory
 from network.advanceddispatcher import AdvancedDispatcher
 from network.bmobject import (
-    BMObject, BMObjectInsufficientPOWError, BMObjectInvalidDataError,
-    BMObjectExpiredError, BMObjectUnwantedStreamError,
-    BMObjectInvalidError, BMObjectAlreadyHaveError
+    BMObject, BMObjectAlreadyHaveError, BMObjectExpiredError,
+    BMObjectInsufficientPOWError, BMObjectInvalidDataError,
+    BMObjectInvalidError, BMObjectUnwantedStreamError
 )
 from network.constants import (
     ADDRESS_ALIVE, MAX_MESSAGE_SIZE, MAX_OBJECT_COUNT,
@@ -30,8 +30,8 @@ from network.constants import (
 from network.dandelion import Dandelion
 from network.proxy import ProxyError
 from node import Node, Peer
-from objectracker import missingObjects, ObjectTracker
-from queues import objectProcessorQueue, portCheckerQueue, invQueue, addrQueue
+from objectracker import ObjectTracker, missingObjects
+from queues import addrQueue, invQueue, objectProcessorQueue, portCheckerQueue
 from randomtrackingdict import RandomTrackingDict
 
 logger = logging.getLogger('default')
diff --git a/src/network/receivequeuethread.py b/src/network/receivequeuethread.py
index 1f5533b3..bf1d8300 100644
--- a/src/network/receivequeuethread.py
+++ b/src/network/receivequeuethread.py
@@ -6,8 +6,8 @@ import Queue
 import socket
 
 import state
-from network.connectionpool import BMConnectionPool
 from network.advanceddispatcher import UnknownStateError
+from network.connectionpool import BMConnectionPool
 from queues import receiveDataQueue
 from threads import StoppableThread
 
diff --git a/src/network/socks4a.py b/src/network/socks4a.py
index 42eab4b7..0d4310bc 100644
--- a/src/network/socks4a.py
+++ b/src/network/socks4a.py
@@ -5,7 +5,7 @@ SOCKS4a proxy module
 import socket
 import struct
 
-from proxy import Proxy, ProxyError, GeneralProxyError
+from proxy import GeneralProxyError, Proxy, ProxyError
 
 
 class Socks4aError(ProxyError):
diff --git a/src/network/tls.py b/src/network/tls.py
index f756591c..1b325696 100644
--- a/src/network/tls.py
+++ b/src/network/tls.py
@@ -7,11 +7,10 @@ import socket
 import ssl
 import sys
 
-from network.advanceddispatcher import AdvancedDispatcher
 import network.asyncore_pollchoose as asyncore
-
-from queues import receiveDataQueue
 import paths
+from network.advanceddispatcher import AdvancedDispatcher
+from queues import receiveDataQueue
 
 logger = logging.getLogger('default')
 
diff --git a/src/plugins/menu_qrcode.py b/src/plugins/menu_qrcode.py
index 63644db6..ea322a49 100644
--- a/src/plugins/menu_qrcode.py
+++ b/src/plugins/menu_qrcode.py
@@ -6,7 +6,7 @@ A menu plugin showing QR-Code for bitmessage address in modal dialog.
 import urllib
 
 import qrcode
-from PyQt4 import QtGui, QtCore
+from PyQt4 import QtCore, QtGui
 
 from pybitmessage.tr import _translate
 
diff --git a/src/plugins/proxyconfig_stem.py b/src/plugins/proxyconfig_stem.py
index bc760ef1..7e8dc089 100644
--- a/src/plugins/proxyconfig_stem.py
+++ b/src/plugins/proxyconfig_stem.py
@@ -11,8 +11,8 @@ Configure tor proxy and hidden service with
   * otherwise use stem's 'BEST' version and save onion keys to the new
     section using *onionhostname* as name for future use.
 """
-import os
 import logging
+import os
 import random  # noseq
 import tempfile
 
diff --git a/src/plugins/sound_canberra.py b/src/plugins/sound_canberra.py
index 20bd054d..9fea8197 100644
--- a/src/plugins/sound_canberra.py
+++ b/src/plugins/sound_canberra.py
@@ -3,9 +3,8 @@
 Sound theme plugin using pycanberra
 """
 
-from pybitmessage.bitmessageqt import sound
-
 import pycanberra
+from pybitmessage.bitmessageqt import sound
 
 _canberra = pycanberra.Canberra()
 
diff --git a/src/pyelliptic/__init__.py b/src/pyelliptic/__init__.py
index 65279ded..dbc1b2af 100644
--- a/src/pyelliptic/__init__.py
+++ b/src/pyelliptic/__init__.py
@@ -9,11 +9,11 @@ For modern cryptography with ECC, AES, HMAC, Blowfish, ...
 This is an abandoned package maintained inside of the PyBitmessage.
 """
 
-from .openssl import OpenSSL
+from .cipher import Cipher
 from .ecc import ECC
 from .eccblind import ECCBlind
-from .cipher import Cipher
 from .hash import hmac_sha256, hmac_sha512, pbkdf2
+from .openssl import OpenSSL
 
 __version__ = '1.3'
 
diff --git a/src/pyelliptic/openssl.py b/src/pyelliptic/openssl.py
index f769f0e3..4933ac44 100644
--- a/src/pyelliptic/openssl.py
+++ b/src/pyelliptic/openssl.py
@@ -6,9 +6,9 @@
 This module loads openssl libs with ctypes and incapsulates
 needed openssl functionality in class _OpenSSL.
 """
-# pylint: disable=protected-access
-import sys
 import ctypes
+import sys
+# pylint: disable=protected-access
 
 OpenSSL = None
 
diff --git a/src/storage/filesystem.py b/src/storage/filesystem.py
index 571a16c1..b19d9272 100644
--- a/src/storage/filesystem.py
+++ b/src/storage/filesystem.py
@@ -1,14 +1,14 @@
 """
 Module for using filesystem (directory with files) for inventory storage
 """
+import string
+import time
 from binascii import hexlify, unhexlify
 from os import listdir, makedirs, path, remove, rmdir
-import string
 from threading import RLock
-import time
 
 from paths import lookupAppdataFolder
-from storage import InventoryStorage, InventoryItem
+from storage import InventoryItem, InventoryStorage
 
 
 class FilesystemInventory(InventoryStorage):
diff --git a/src/storage/sqlite.py b/src/storage/sqlite.py
index 7f41abc5..0992c00e 100644
--- a/src/storage/sqlite.py
+++ b/src/storage/sqlite.py
@@ -5,8 +5,8 @@ import sqlite3
 import time
 from threading import RLock
 
-from helper_sql import sqlQuery, SqlBulkExecute, sqlExecute
-from storage import InventoryStorage, InventoryItem
+from helper_sql import SqlBulkExecute, sqlExecute, sqlQuery
+from storage import InventoryItem, InventoryStorage
 
 
 class SqliteInventory(InventoryStorage):  # pylint: disable=too-many-ancestors