diff --git a/plugins/FunCommands.py b/plugins/FunCommands.py
index 047be342e..a290e13ed 100644
--- a/plugins/FunCommands.py
+++ b/plugins/FunCommands.py
@@ -47,7 +47,6 @@ import sha
 import time
 import math
 import cmath
-import types
 import string
 import random
 import urllib
diff --git a/plugins/Infobot.py b/plugins/Infobot.py
index 88a61bd6d..db81b7e67 100755
--- a/plugins/Infobot.py
+++ b/plugins/Infobot.py
@@ -116,7 +116,7 @@ class Infobot(callbacks.PrivmsgRegexp):
         self.db.commit()
 
     def forget(self, irc, msg, match):
-        r"^forget\s+(.+?)(?![?.! ]*)$"
+        r"^forget\s+(.+?)(?!\?+)[?.! ]*$"
         key = match.group(1)
         cursor = self.db.cursor()
         cursor.execute('DELETE FROM is_factoids WHERE key=%s', key)
@@ -128,7 +128,7 @@ class Infobot(callbacks.PrivmsgRegexp):
         (nick, key) = match.groups()
         try:
             s = '%s wants you to know that %s' %(msg.nick,self.getFactoid(key))
-            irc.queueMsg(irmcsgs.privmsg(nick, s))
+            irc.queueMsg(ircmsgs.privmsg(nick, s))
         except KeyError:
             irc.reply(msg, 'I don\'t know anything about %s' % key)
         
@@ -157,7 +157,6 @@ class Infobot(callbacks.PrivmsgRegexp):
         key = match.group(1)
         try:
             irc.reply(msg, self.getFactoid(key))
-            #irc.queueMsg(ircmsgs.privmsg(msg.args[0], self.getFactoid(key)))
         except KeyError:
             irc.reply(msg, self.getRandomSaying('dont_knows'))
 
@@ -165,9 +164,9 @@ class Infobot(callbacks.PrivmsgRegexp):
         r"^info$"
         cursor = self.db.cursor()
         cursor.execute("SELECT COUNT(*) FROM is_factoids")
-        numIs = self.cursor.fetchone()[0]
+        numIs = cursor.fetchone()[0]
         cursor.execute("SELECT COUNT(*) FROM are_factoids")
-        numAre = self.cursor.fetchone()[0]
+        numAre = cursor.fetchone()[0]
         s = 'I have %s is factoids and %s are factoids' % (numIs, numAre)
         irc.reply(msg, s)
                   
diff --git a/plugins/KillBold.py b/plugins/KillBold.py
index f10bb8700..861f65ea6 100644
--- a/plugins/KillBold.py
+++ b/plugins/KillBold.py
@@ -36,7 +36,6 @@ Removes all bold output by the bot.
 from baseplugin import *
 
 import ircmsgs
-import privmsgs
 import callbacks
 
 
diff --git a/plugins/Moobot.py b/plugins/Moobot.py
index f77d5748d..84e41dcba 100644
--- a/plugins/Moobot.py
+++ b/plugins/Moobot.py
@@ -118,7 +118,6 @@ class Moobot(callbacks.Privmsg):
         """
         text = privmsgs.getArgs(args)
         text = text.replace('_', '-')
-        L = []
         def morseToLetter(m):
             s = m.group(1)
             return self._revcode.get(s, s)
diff --git a/plugins/News.py b/plugins/News.py
index 4faab3dcc..35c41f12e 100644
--- a/plugins/News.py
+++ b/plugins/News.py
@@ -69,6 +69,7 @@ class News(callbacks.Privmsg, ChannelDBHandler):
                           added_by TEXT
                           )""")
         db.commit()
+        return db
 
     def addnews(self, irc, msg, args):
         """[<channel>] <expires> <text>
diff --git a/plugins/RSS.py b/plugins/RSS.py
index 94501956e..5808b7e9a 100644
--- a/plugins/RSS.py
+++ b/plugins/RSS.py
@@ -44,16 +44,11 @@ And you'll be able to call the command like this:
 slashdot
 
 Also includes a function for getting info about a specific feed, rssinfo.
-
-Commands include:
-  rsstitles
-  rssinfo
 """
 
 from baseplugin import *
 
 import time
-import operator
 
 import rssparser
 
diff --git a/scripts/clean.py b/scripts/clean.py
index 0754218ae..b91a3d6db 100755
--- a/scripts/clean.py
+++ b/scripts/clean.py
@@ -1,8 +1,8 @@
 #!/usr/bin/env python
 
-import os, sys, os.path, shutil
+import os, os.path
 
-def removeFiles(arg, dirname, names):
+def removeFiles(_, dirname, names):
     for name in names:
         if name[-4:] in ('.pyc', 'pyo'):
             os.remove(os.path.join(dirname, name))
diff --git a/src/MiscCommands.py b/src/MiscCommands.py
index 19c653a9a..788ebbc20 100755
--- a/src/MiscCommands.py
+++ b/src/MiscCommands.py
@@ -190,9 +190,9 @@ class MiscCommands(callbacks.Privmsg):
         Returns the module <command> is in.
         """
         command = callbacks.canonicalName(privmsgs.getArgs(args))
-        Class = irc.findCallback(command)
-        if Class is not None:
-            irc.reply(msg, Class.name())
+        cb = irc.findCallback(command)
+        if cb is not None:
+            irc.reply(msg, cb.name())
         else:
             irc.error(msg, 'There is no such command %s' % command)
 
diff --git a/src/asyncoreDrivers.py b/src/asyncoreDrivers.py
index 8e42471e4..9a133c0db 100644
--- a/src/asyncoreDrivers.py
+++ b/src/asyncoreDrivers.py
@@ -45,7 +45,6 @@ import ircdb
 import world
 import drivers
 import ircmsgs
-import ircutils
 import schedule
 
 class AsyncoreRunnerDriver(drivers.IrcDriver):
diff --git a/src/bot.py b/src/bot.py
index 93e99663e..60e3e0788 100755
--- a/src/bot.py
+++ b/src/bot.py
@@ -178,9 +178,8 @@ def main():
             sys.exit(0)
 
 if __name__ == '__main__':
-    import sys
     if '-p' in sys.argv:
-        import profile, time
+        import profile
         sys.argv.remove('-p')
         profile.run('main()', '%i.prof' % time.time())
     if '-O' in sys.argv:
diff --git a/src/utils.py b/src/utils.py
index ee4c70049..c48df4d2e 100755
--- a/src/utils.py
+++ b/src/utils.py
@@ -51,7 +51,7 @@ class HtmlToText(sgmllib.SGMLParser):
         self.tagReplace = tagReplace
         sgmllib.SGMLParser.__init__(self)
 
-    def unknown_starttag(self, tag, attrib):
+    def unknown_starttag(self, tag, attr):
         self.data.append(self.tagReplace)
 
     def unknown_endtag(self, tag):
diff --git a/test/test.py b/test/test.py
index b4302da97..7742ea91e 100755
--- a/test/test.py
+++ b/test/test.py
@@ -37,7 +37,6 @@ sys.path.insert(0, 'plugins')
 from fix import *
 
 import re
-import sys
 import glob
 import time
 import os.path
@@ -141,11 +140,11 @@ class PluginTestCase(unittest.TestCase):
 
     def assertRegexps(self, query, regexps):
         started = time.time()
-        total = len(expectedResponses)*self.timeout
-        while expectedResponses and time.time() - started < total:
+        total = len(regexps)*self.timeout
+        while regexps and time.time() - started < total:
             m = self._feedMsg(query)
             self.failUnless(m, msg)
-            regepx = expectedResponses.pop(0)
+            regexp = regexps.pop(0)
             self.failUnless(re.search(regexp, m.args[1]),
                             '%r does not match %r' % (m.args[1], regexp))
         self.failIf(time.time() - started > total)
diff --git a/test/test_fix.py b/test/test_fix.py
index 346c9d753..5e30bd382 100644
--- a/test/test_fix.py
+++ b/test/test_fix.py
@@ -33,8 +33,6 @@
 
 from test import *
 
-import pickle
-
 class FunctionsTest(unittest.TestCase):
     def testCatch(self):
         def f():
@@ -46,7 +44,7 @@ class FunctionsTest(unittest.TestCase):
         revL = list(reviter(L))
         L.reverse()
         self.assertEqual(L, revL, 'reviter didn\'t return reversed list')
-        for elt in reviter([]):
+        for _ in reviter([]):
             self.fail('reviter caused iteration over empty sequence')
 
     def testGroup(self):
diff --git a/test/test_ircdb.py b/test/test_ircdb.py
index ab2e54631..56f0840d7 100644
--- a/test/test_ircdb.py
+++ b/test/test_ircdb.py
@@ -35,7 +35,6 @@ import os
 import unittest
 
 import conf
-import debug
 import ircdb
 import ircutils
 
diff --git a/test/test_irclib.py b/test/test_irclib.py
index 92c44ab3a..568cac085 100644
--- a/test/test_irclib.py
+++ b/test/test_irclib.py
@@ -31,7 +31,6 @@
 
 from test import *
 
-import copy
 import pickle
 
 import conf
diff --git a/test/test_ircmsgs.py b/test/test_ircmsgs.py
index a0e874fa0..dd371b887 100644
--- a/test/test_ircmsgs.py
+++ b/test/test_ircmsgs.py
@@ -47,7 +47,8 @@ class IrcMsgTestCase(unittest.TestCase):
                             strmsg.replace(':', '') == strmsg)
 
     def testRepr(self):
-        from ircmsgs import IrcMsg
+        IrcMsg = ircmsgs.IrcMsg
+        ignore(IrcMsg) # Make pychecker happy.
         for msg in msgs:
             self.assertEqual(msg, eval(repr(msg)))
 
diff --git a/test/test_structures.py b/test/test_structures.py
index ec2b6ebff..e72baf8c1 100644
--- a/test/test_structures.py
+++ b/test/test_structures.py
@@ -138,7 +138,7 @@ class RingBufferTestCase(unittest.TestCase):
         self.assertRaises(ValueError, b.__setitem__, slice(0, 10), [])
         b[2:4] = L[2:4]
         self.assertEquals(b[2:4], L[2:4])
-        for i in range(len(b)):
+        for _ in range(len(b)):
             b.append(0)
         b[2:4] = L[2:4]
         self.assertEquals(b[2:4], L[2:4])
diff --git a/tools/pycheckrc b/tools/pycheckrc
index d72183a1d..c4a9e18f4 100644
--- a/tools/pycheckrc
+++ b/tools/pycheckrc
@@ -141,16 +141,16 @@ usesInput = 1
 usesExec = 0
 
 # ignore warnings from files under standard library
-ignoreStandardLibrary = 0
+ignoreStandardLibrary = 1
 
 # ignore warnings from the list of modules
 blacklist = ['Tkinter', 'wxPython', 'gtk', 'GTK', 'GDK', 'asynchat']
 
 # ignore global variables not used if name is one of these values
-variablesToIgnore = ['__version__', '__warningregistry__', '__all__', '__credits__', '__author__', '__email__']
+variablesToIgnore = ['__version__', '__warningregistry__', '__all__', '__credits__', '__author__', '__email__',]
 
 # ignore unused locals/arguments if name is one of these values
-unusedNames = ['_', 'empty', 'unused', 'dummy', 'irc', 'args', 'msg', 'match']
+unusedNames = ['_', 'empty', 'unused', 'dummy', 'irc', 'args', 'msg', 'match', 'afterConnect', 'onStart', 'advanced', 'yn', 'expect', 'anything', 'something',]
 
 # ignore use of deprecated modules/functions
 deprecated = 1