resolved conflicts

src/plugins/indicator_libmessaging.py

@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+"""
+src/plugins/indicator_libmessaging.py
+=====================================
+"""
 
 import gi
 gi.require_version('MessagingMenu', '1.0')  # noqa:E402
@@ -9,6 +13,7 @@ from pybitmessage.tr import _translate
 
 
 class IndicatorLibmessaging(object):
+    """Plugin for libmessage indicator"""
     def __init__(self, form):
         try:
             self.app = MessagingMenu.App(desktop_id='pybitmessage.desktop')
@@ -32,15 +37,18 @@ class IndicatorLibmessaging(object):
         if self.app:
             self.app.unregister()
 
-    def activate(self, app, source):
+    def activate(self, app, source):                # pylint: disable=unused-argument
+        """Activate the libmessaging indicator plugin"""
         self.form.appIndicatorInbox(
             self.new_message_item if source == 'messages'
             else self.new_broadcast_item
         )
 
-    # show the number of unread messages and subscriptions
-    # on the messaging menu
     def show_unread(self, draw_attention=False):
+        """
+        show the number of unread messages and subscriptions
+        on the messaging menu
+        """
         for source, count in zip(
                 ('messages', 'subscriptions'),
                 self.form.getUnread()

src/plugins/menu_qrcode.py

@@ -1,5 +1,8 @@
 # -*- coding: utf-8 -*-
 """
+src/plugins/menu_qrcode.py
+==========================
+
 A menu plugin showing QR-Code for bitmessage address in modal dialog.
 """
 
@@ -12,9 +15,10 @@ from pybitmessage.tr import _translate
 
 
 # http://stackoverflow.com/questions/20452486
-class Image(qrcode.image.base.BaseImage):
+class Image(qrcode.image.base.BaseImage):           # pylint: disable=abstract-method
     """Image output class for qrcode using QPainter"""
-    def __init__(self, border, width, box_size):
+
+    def __init__(self, border, width, box_size):        # pylint: disable=super-init-not-called
         self.border = border
         self.width = width
         self.box_size = box_size

src/plugins/notification_notify2.py

@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+"""
+src/plugins/notification_notify2.py
+===================================
+"""
 
 import gi
 gi.require_version('Notify', '0.7')
@@ -6,10 +10,13 @@ from gi.repository import Notify
 
 Notify.init('pybitmessage')
 
+
 def connect_plugin(title, subtitle, category, label, icon):
+    """Plugin for notify2"""
     if not icon:
         icon = 'mail-message-new' if category == 2 else 'pybitmessage'
     connect_plugin.notification.update(title, subtitle, icon)
     connect_plugin.notification.show()
 
+
 connect_plugin.notification = Notify.Notification.new("Init", "Init")

src/plugins/plugin.py

@@ -1,5 +1,8 @@
 # -*- coding: utf-8 -*-
-
+"""
+src/plugins/plugin.py
+===================================
+"""
 import pkg_resources
 
 

src/plugins/proxyconfig_stem.py

@@ -1,5 +1,8 @@
 # -*- coding: utf-8 -*-
-
+"""
+src/plugins/proxyconfig_stem.py
+===================================
+"""
 import os
 import logging
 import random  # noseq
@@ -29,14 +32,14 @@ class DebugLogger(object):
             # Plugin's debug or unexpected log line from tor
             self._logger.debug(line)
         else:
-            self._logger.log(self._levels.get(level, 10), '(tor)' + line)
+            self._logger.log(self._levels.get(level, 10), '(tor) %s', line)
 
 
 def connect_plugin(config):  # pylint: disable=too-many-branches
     """Run stem proxy configurator"""
     logwrite = DebugLogger()
     if config.safeGet('bitmessagesettings', 'sockshostname') not in (
-        'localhost', '127.0.0.1', ''
+            'localhost', '127.0.0.1', ''
     ):
         # remote proxy is choosen for outbound connections,
         # nothing to do here, but need to set socksproxytype to SOCKS5!

src/plugins/sound_canberra.py

@@ -1,4 +1,8 @@
 # -*- coding: utf-8 -*-
+"""
+src/plugins/proxyconfig_stem.py
+===================================
+"""
 
 from pybitmessage.bitmessageqt import sound
 
@@ -14,7 +18,8 @@ _theme = {
 }
 
 
-def connect_plugin(category, label=None):
+def connect_plugin(category, label=None):    # pylint: disable=unused-argument
+    """This function implements the entry point."""
     try:
         _canberra.play(0, pycanberra.CA_PROP_EVENT_ID, _theme[category], None)
     except (KeyError, pycanberra.CanberraException):

src/plugins/sound_gstreamer.py

@@ -1,5 +1,8 @@
 # -*- coding: utf-8 -*-
-
+"""
+src/plugins/sound_gstreamer.py
+===================================
+"""
 import gi
 gi.require_version('Gst', '1.0')
 from gi.repository import Gst  # noqa: E402
@@ -9,6 +12,7 @@ _player = Gst.ElementFactory.make("playbin", "player")
 
 
 def connect_plugin(sound_file):
+    """Entry point for sound file"""
     _player.set_state(Gst.State.NULL)
     _player.set_property("uri", "file://" + sound_file)
     _player.set_state(Gst.State.PLAYING)

src/plugins/sound_playfile.py

@@ -1,10 +1,14 @@
 # -*- coding: utf-8 -*-
-
+"""
+src/plugins/sound_playfile.py
+===================================
+"""
 
 try:
     import winsound
 
     def connect_plugin(sound_file):
+        """Plugin's entry point"""
         winsound.PlaySound(sound_file, winsound.SND_FILENAME)
 except ImportError:
     import os
@@ -18,7 +22,8 @@ except ImportError:
             args, stdout=FNULL, stderr=subprocess.STDOUT, close_fds=True)
 
     def connect_plugin(sound_file):
-        global play_cmd
+        """This function implements the entry point."""
+        global play_cmd    # pylint: disable=global-statement
 
         ext = os.path.splitext(sound_file)[-1]
         try:

src/pyelliptic/__init__.py

@@ -1,3 +1,7 @@
+"""
+src/pyelliptic/__init__.py
+=====================================
+"""
 # Copyright (C) 2010
 # Author: Yann GUIBET
 # Contact: <yannguibet@gmail.com>

src/pyelliptic/cipher.py

@@ -1,5 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
+"""
+src/pyelliptic/cipher.py
+========================
+"""
 
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
@@ -7,7 +11,8 @@
 from openssl import OpenSSL
 
 
-class Cipher:
+# pylint: disable=redefined-builtin
+class Cipher(object):
     """
     Symmetric encryption
 
@@ -44,30 +49,34 @@ class Cipher:
 
     @staticmethod
     def get_blocksize(ciphername):
+        """This Method returns cipher blocksize"""
         cipher = OpenSSL.get_cipher(ciphername)
         return cipher.get_blocksize()
 
     @staticmethod
     def gen_IV(ciphername):
+        """Generate random initialization vector"""
         cipher = OpenSSL.get_cipher(ciphername)
         return OpenSSL.rand(cipher.get_blocksize())
 
     def update(self, input):
+        """Update result with more data"""
         i = OpenSSL.c_int(0)
         buffer = OpenSSL.malloc(b"", len(input) + self.cipher.get_blocksize())
         inp = OpenSSL.malloc(input, len(input))
         if OpenSSL.EVP_CipherUpdate(self.ctx, OpenSSL.byref(buffer),
                                     OpenSSL.byref(i), inp, len(input)) == 0:
             raise Exception("[OpenSSL] EVP_CipherUpdate FAIL ...")
-        return buffer.raw[0:i.value]
+        return buffer.raw[0:i.value]    # pylint: disable=invalid-slice-index
 
     def final(self):
+        """Returning the final value"""
         i = OpenSSL.c_int(0)
         buffer = OpenSSL.malloc(b"", self.cipher.get_blocksize())
         if (OpenSSL.EVP_CipherFinal_ex(self.ctx, OpenSSL.byref(buffer),
                                        OpenSSL.byref(i))) == 0:
             raise Exception("[OpenSSL] EVP_CipherFinal_ex FAIL ...")
-        return buffer.raw[0:i.value]
+        return buffer.raw[0:i.value]    # pylint: disable=invalid-slice-index
 
     def ciphering(self, input):
         """
@@ -77,6 +86,7 @@ class Cipher:
         return buff + self.final()
 
     def __del__(self):
+        # pylint: disable=protected-access
         if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL:
             OpenSSL.EVP_CIPHER_CTX_reset(self.ctx)
         else:

src/pyelliptic/hash.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-
+"""
+src/pyelliptic/hash.py
+=====================
+"""
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
 
@@ -27,10 +30,10 @@ def _equals_str(a, b):
 
 
 def equals(a, b):
+    """Compare two strings or bytearrays"""
     if isinstance(a, str):
         return _equals_str(a, b)
-    else:
-        return _equals_bytes(a, b)
+    return _equals_bytes(a, b)
 
 
 def hmac_sha256(k, m):
@@ -58,6 +61,7 @@ def hmac_sha512(k, m):
 
 
 def pbkdf2(password, salt=None, i=10000, keylen=64):
+    """Key derivation function using SHA256"""
     if salt is None:
         salt = OpenSSL.rand(8)
     p_password = OpenSSL.malloc(password, len(password))

src/pyelliptic/openssl.py

@@ -11,16 +11,23 @@ OpenSSL = None
 
 # !/usr/bin/env python
 # -*- coding: utf-8 -*-
-
+"""
+src/pyelliptic/openssl.py
+=====================
+"""
 #  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
 #  See LICENSE for details.
 #
 #  Software slightly changed by Jonathan Warren <bitmessage at-symbol jonwarren.org>
+# pylint: disable=protected-access
 
 
-class CipherName:       # pylint: disable=old-style-class
-    """Method helps to get pointers, name and blocksize"""
 
+
+class CipherName:
+    """Class returns cipher name, pointer and blocksize"""
+
+    # pylint: disable=old-style-class
     def __init__(self, name, pointer, blocksize):
         self._name = name
         self._pointer = pointer
@@ -36,11 +43,11 @@ class CipherName:       # pylint: disable=old-style-class
         return self._pointer()
 
     def get_name(self):
-        """Method returns the name"""
+        """This method returns cipher name"""
         return self._name
 
     def get_blocksize(self):
-        """Method returns the blocksize"""
+        """This method returns cipher blocksize"""
         return self._blocksize
 
 
@@ -76,9 +83,11 @@ def get_version(library):
     return (version, hexversion, cflags)
 
 
-class _OpenSSL:     # pylint: disable=too-many-instance-attributes, old-style-class, too-many-statements
-    """Wrapper for OpenSSL using ctypes"""
-
+class _OpenSSL:
+    """
+    Wrapper for OpenSSL using ctypes
+    """
+    # pylint: disable=too-many-statements, too-many-instance-attributes, old-style-class
     def __init__(self, library):
         """Build the wrapper"""
         self._lib = ctypes.CDLL(library)
@@ -647,8 +656,7 @@ class _OpenSSL:     # pylint: disable=too-many-instance-attributes, old-style-cl
 
 def loadOpenSSL():
     """Method find and load the OpenSSL library"""
-    # pylint: disable=global-statement, protected-access, too-many-branches, no-member
-
+    # pylint: disable=global-statement, protected-access, too-many-branches
     global OpenSSL
     from os import path, environ
     from ctypes.util import find_library

src/storage/filesystem.py

@@ -1,21 +1,26 @@
+"""
+src/storage/filesystem.py
+=========================
+"""
 from binascii import hexlify, unhexlify
 from os import listdir, makedirs, path, remove, rmdir
 import string
 from threading import RLock
 import time
-import traceback
 
 from paths import lookupAppdataFolder
 from storage import InventoryStorage, InventoryItem
 
-class FilesystemInventory(InventoryStorage):
+
+class FilesystemInventory(InventoryStorage):    # pylint: disable=too-many-ancestors, abstract-method
+    """Module for using filesystem (directory with files) for inventory storage"""
     topDir = "inventory"
     objectDir = "objects"
     metadataFilename = "metadata"
     dataFilename = "data"
 
     def __init__(self):
-        super(self.__class__, self).__init__()
+        super(FilesystemInventory, self).__init__()
         self.baseDir = path.join(lookupAppdataFolder(), FilesystemInventory.topDir)
         for createDir in [self.baseDir, path.join(self.baseDir, "objects")]:
             if path.exists(createDir):
@@ -23,72 +28,101 @@ class FilesystemInventory(InventoryStorage):
                     raise IOError("%s exists but it's not a directory" % (createDir))
             else:
                 makedirs(createDir)
-        self.lock = RLock() # Guarantees that two receiveDataThreads don't receive and process the same message concurrently (probably sent by a malicious individual)
+        # Guarantees that two receiveDataThreads don't receive and process the same message
+        # concurrently (probably sent by a malicious individual)
+        self.lock = RLock()
         self._inventory = {}
         self._load()
 
-    def __contains__(self, hash):
+    def __contains__(self, hashval):
         retval = False
         for streamDict in self._inventory.values():
-            if hash in streamDict:
+            if hashval in streamDict:
                 return True
         return False
 
-    def __getitem__(self, hash):
+    def __getitem__(self, hashval):
         for streamDict in self._inventory.values():
             try:
-                retval = streamDict[hash]
+                retval = streamDict[hashval]
             except KeyError:
                 continue
             if retval.payload is None:
-                retval = InventoryItem(retval.type, retval.stream, self.getData(hash), retval.expires, retval.tag)
+                retval = InventoryItem(retval.type, retval.stream, self.getData(hashval), retval.expires, retval.tag)
             return retval
-        raise KeyError(hash)
+        raise KeyError(hashval)
 
-    def __setitem__(self, hash, value):
+    def __setitem__(self, hashval, value):
         with self.lock:
             value = InventoryItem(*value)
             try:
-                makedirs(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash)))
+                makedirs(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hashval)))
             except OSError:
                 pass
             try:
-                with open(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash), FilesystemInventory.metadataFilename), 'w') as f:
+                with open(
+                    path.join(
+                        self.baseDir,
+                        FilesystemInventory.objectDir,
+                        hexlify(hashval),
+                        FilesystemInventory.metadataFilename,
+                    ),
+                    "w",
+                ) as f:
                     f.write("%s,%s,%s,%s," % (value.type, value.stream, value.expires, hexlify(value.tag)))
-                with open(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash), FilesystemInventory.dataFilename), 'w') as f:
+                with open(
+                    path.join(
+                        self.baseDir,
+                        FilesystemInventory.objectDir,
+                        hexlify(hashval),
+                        FilesystemInventory.dataFilename,
+                    ),
+                    "w",
+                ) as f:
                     f.write(value.payload)
             except IOError:
                 raise KeyError
             try:
-                self._inventory[value.stream][hash] = value
+                self._inventory[value.stream][hashval] = value
             except KeyError:
                 self._inventory[value.stream] = {}
-                self._inventory[value.stream][hash] = value
+                self._inventory[value.stream][hashval] = value
 
-    def delHashId(self, hash):
-        for stream in self._inventory.keys():
+    def delHashId(self, hashval):
+        """Remove object from inventory"""
+        for stream in self._inventory:
             try:
-                del self._inventory[stream][hash]
+                del self._inventory[stream][hashval]
             except KeyError:
                 pass
         with self.lock:
             try:
-                remove(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash), FilesystemInventory.metadataFilename))
+                remove(
+                    path.join(
+                        self.baseDir,
+                        FilesystemInventory.objectDir,
+                        hexlify(hashval),
+                        FilesystemInventory.metadataFilename))
             except IOError:
                 pass
             try:
-                remove(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash), FilesystemInventory.dataFilename))
+                remove(
+                    path.join(
+                        self.baseDir,
+                        FilesystemInventory.objectDir,
+                        hexlify(hashval),
+                        FilesystemInventory.dataFilename))
             except IOError:
                 pass
             try:
-                rmdir(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hash)))
+                rmdir(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hashval)))
             except IOError:
                 pass
 
     def __iter__(self):
         elems = []
         for streamDict in self._inventory.values():
-            elems.extend (streamDict.keys())
+            elems.extend(streamDict.keys())
         return elems.__iter__()
 
     def __len__(self):
@@ -103,44 +137,66 @@ class FilesystemInventory(InventoryStorage):
             try:
                 objectType, streamNumber, expiresTime, tag = self.getMetadata(hashId)
                 try:
-                    newInventory[streamNumber][hashId] = InventoryItem(objectType, streamNumber, None, expiresTime, tag)
+                    newInventory[streamNumber][hashId] = InventoryItem(
+                        objectType, streamNumber, None, expiresTime, tag)
                 except KeyError:
                     newInventory[streamNumber] = {}
-                    newInventory[streamNumber][hashId] = InventoryItem(objectType, streamNumber, None, expiresTime, tag)
+                    newInventory[streamNumber][hashId] = InventoryItem(
+                        objectType, streamNumber, None, expiresTime, tag)
             except KeyError:
                 print "error loading %s" % (hexlify(hashId))
-                pass
         self._inventory = newInventory
 #        for i, v in self._inventory.items():
 #            print "loaded stream: %s, %i items" % (i, len(v))
 
     def stream_list(self):
+        """Return list of streams"""
         return self._inventory.keys()
 
     def object_list(self):
+        """Return inventory vectors (hashes) from a directory"""
         return [unhexlify(x) for x in listdir(path.join(self.baseDir, FilesystemInventory.objectDir))]
 
     def getData(self, hashId):
+        """Get object data"""
         try:
-            with open(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hashId), FilesystemInventory.dataFilename), 'r') as f:
+            with open(
+                path.join(
+                    self.baseDir,
+                    FilesystemInventory.objectDir,
+                    hexlify(hashId),
+                    FilesystemInventory.dataFilename,
+                ),
+                "r",
+            ) as f:
                 return f.read()
         except IOError:
             raise AttributeError
 
     def getMetadata(self, hashId):
+        """Get object metadata"""
         try:
-            with open(path.join(self.baseDir, FilesystemInventory.objectDir, hexlify(hashId), FilesystemInventory.metadataFilename), 'r') as f:
+            with open(
+                path.join(
+                    self.baseDir,
+                    FilesystemInventory.objectDir,
+                    hexlify(hashId),
+                    FilesystemInventory.metadataFilename,
+                ),
+                "r",
+            ) as f:
                 objectType, streamNumber, expiresTime, tag, undef = string.split(f.read(), ",", 4)
                 return [int(objectType), int(streamNumber), int(expiresTime), unhexlify(tag)]
         except IOError:
             raise KeyError
 
     def by_type_and_tag(self, objectType, tag):
+        """Get a list of objects filtered by object type and tag"""
         retval = []
         for stream, streamDict in self._inventory:
             for hashId, item in streamDict:
                 if item.type == objectType and item.tag == tag:
-                    try: 
+                    try:
                         if item.payload is None:
                             item.payload = self.getData(hashId)
                     except IOError:
@@ -149,12 +205,14 @@ class FilesystemInventory(InventoryStorage):
         return retval
 
     def hashes_by_stream(self, stream):
+        """Return inventory vectors (hashes) for a stream"""
         try:
             return self._inventory[stream].keys()
         except KeyError:
             return []
 
     def unexpired_hashes_by_stream(self, stream):
+        """Return unexpired hashes in the inventory for a particular stream"""
         t = int(time.time())
         try:
             return [x for x, value in self._inventory[stream].items() if value.expires > t]
@@ -162,9 +220,11 @@ class FilesystemInventory(InventoryStorage):
             return []
 
     def flush(self):
+        """Flush the inventory and create a new, empty one"""
         self._load()
 
     def clean(self):
+        """Clean out old items from the inventory"""
         minTime = int(time.time()) - (60 * 60 * 30)
         deletes = []
         for stream, streamDict in self._inventory.items():

src/storage/sqlite.py

@@ -1,45 +1,59 @@
-import collections
-from threading import current_thread, enumerate as threadingEnumerate, RLock
-import Queue
+"""
+src/storage/sqlite.py
+=========================
+"""
 import sqlite3
 import time
+from threading import RLock
 
-from helper_sql import *
+from helper_sql import sqlQuery, SqlBulkExecute, sqlExecute
 from storage import InventoryStorage, InventoryItem
 
-class SqliteInventory(InventoryStorage):
-    def __init__(self):
-        super(self.__class__, self).__init__()
-        self._inventory = {} #of objects (like msg payloads and pubkey payloads) Does not include protocol headers (the first 24 bytes of each packet).
-        self._objects = {} # cache for existing objects, used for quick lookups if we have an object. This is used for example whenever we receive an inv message from a peer to check to see what items are new to us. We don't delete things out of it; instead, the singleCleaner thread clears and refills it.
-        self.lock = RLock() # Guarantees that two receiveDataThreads don't receive and process the same message concurrently (probably sent by a malicious individual)
 
-    def __contains__(self, hash):
+class SqliteInventory(InventoryStorage):    # pylint: disable=too-many-ancestors
+    """Inventory using SQLite"""
+    def __init__(self):
+        super(SqliteInventory, self).__init__()
+        # of objects (like msg payloads and pubkey payloads)
+        # Does not include protocol headers (the first 24 bytes of each packet).
+        self._inventory = {}
+        # cache for existing objects, used for quick lookups if we have an object.
+        # This is used for example whenever we receive an inv message from a peer
+        # to check to see what items are new to us.
+        # We don't delete things out of it; instead, the singleCleaner thread clears and refills it.
+        self._objects = {}
+        # Guarantees that two receiveDataThreads don't receive and process the same message concurrently
+        # (probably sent by a malicious individual)
+        self.lock = RLock()
+
+    def __contains__(self, hash_):
         with self.lock:
-            if hash in self._objects:
+            if hash_ in self._objects:
                 return True
-            rows = sqlQuery('SELECT streamnumber FROM inventory WHERE hash=?', sqlite3.Binary(hash))
+            rows = sqlQuery('SELECT streamnumber FROM inventory WHERE hash=?', sqlite3.Binary(hash_))
             if not rows:
                 return False
-            self._objects[hash] = rows[0][0]
+            self._objects[hash_] = rows[0][0]
             return True
 
-    def __getitem__(self, hash):
+    def __getitem__(self, hash_):
         with self.lock:
-            if hash in self._inventory:
-                return self._inventory[hash]
-            rows = sqlQuery('SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE hash=?', sqlite3.Binary(hash))
+            if hash_ in self._inventory:
+                return self._inventory[hash_]
+            rows = sqlQuery(
+                'SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE hash=?',
+                sqlite3.Binary(hash_))
             if not rows:
-                raise KeyError(hash)
+                raise KeyError(hash_)
             return InventoryItem(*rows[0])
 
-    def __setitem__(self, hash, value):
+    def __setitem__(self, hash_, value):
         with self.lock:
             value = InventoryItem(*value)
-            self._inventory[hash] = value
-            self._objects[hash] = value.stream
+            self._inventory[hash_] = value
+            self._objects[hash_] = value.stream
 
-    def __delitem__(self, hash):
+    def __delitem__(self, hash_):
         raise NotImplementedError
 
     def __iter__(self):
@@ -55,18 +69,22 @@ 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 += (InventoryItem(*value) for value in sqlQuery('SELECT objecttype, streamnumber, payload, expirestime, tag FROM inventory WHERE objecttype=? AND tag=?', objectType, sqlite3.Binary(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 += (str(payload) for payload, in sqlQuery('SELECT hash FROM inventory WHERE streamnumber=? AND expirestime>?', stream, 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 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():
                     sql.execute('INSERT INTO inventory VALUES (?, ?, ?, ?, ?, ?)', sqlite3.Binary(objectHash), *value)
@@ -74,8 +92,7 @@ class SqliteInventory(InventoryStorage):
 
     def clean(self):
         with self.lock:
-            sqlExecute('DELETE FROM inventory WHERE expirestime<?',int(time.time()) - (60 * 60 * 3))
+            sqlExecute('DELETE FROM inventory WHERE expirestime<?', int(time.time()) - (60 * 60 * 3))
             self._objects.clear()
             for objectHash, value in self._inventory.items():
                 self._objects[objectHash] = value.stream
-

src/storage/storage.py

@@ -1,27 +1,33 @@
+"""
+src/storage/storage.py
+======================
+"""
 import collections
 
 InventoryItem = collections.namedtuple('InventoryItem', 'type stream payload expires tag')
 
+
 class Storage(object):
+    """Base class for storing inventory (extendable for other items to store)"""
     pass
-#    def __init__(self):
-#        super(self.__class__, self).__init__()
+
 
 class InventoryStorage(Storage, collections.MutableMapping):
+    """Module used for inventory storage"""
     def __init__(self):
-#        super(self.__class__, self).__init__()
+        # pylint: disable=super-init-not-called
         self.numberOfInventoryLookupsPerformed = 0
 
-    def __contains__(self, hash):
+    def __contains__(self, _):
         raise NotImplementedError
 
-    def __getitem__(self, hash):
+    def __getitem__(self, _):
         raise NotImplementedError
 
-    def __setitem__(self, hash, value):
+    def __setitem__(self, _, value):
         raise NotImplementedError
 
-    def __delitem__(self, hash):
+    def __delitem__(self, _):
         raise NotImplementedError
 
     def __iter__(self):
@@ -31,18 +37,24 @@ class InventoryStorage(Storage, collections.MutableMapping):
         raise NotImplementedError
 
     def by_type_and_tag(self, objectType, tag):
+        """Return objects filtered by object type and tag"""
         raise NotImplementedError
 
     def unexpired_hashes_by_stream(self, stream):
+        """Return unexpired inventory vectors filtered by stream"""
         raise NotImplementedError
 
     def flush(self):
+        """Flush cache"""
         raise NotImplementedError
 
     def clean(self):
+        """Free memory / perform garbage collection"""
         raise NotImplementedError
 
-class MailboxStorage(Storage, collections.MutableMapping):
+
+class MailboxStorage(Storage, collections.MutableMapping):    # pylint: disable=abstract-method
+    """Method for storing mails"""
     def __init__(self):
-#        super(self.__class__, self).__init__()
+        # pylint: disable=super-init-not-called
         pass