diff --git a/scripts/supybot b/scripts/supybot
index aabd7351f..973fe8831 100644
--- a/scripts/supybot
+++ b/scripts/supybot
@@ -42,7 +42,10 @@ import sys
 import atexit
 import shutil
 import signal
-import cStringIO as StringIO
+if sys.version_info[0] < 3:
+    import cStringIO as StringIO
+else:
+    from io import StringIO
 
 if sys.version_info < (2, 6, 0):
     sys.stderr.write('This program requires Python >= 2.6.0')
@@ -50,7 +53,7 @@ if sys.version_info < (2, 6, 0):
     sys.exit(-1)
 
 def _termHandler(signalNumber, stackFrame):
-    raise SystemExit, 'Signal #%s.' % signalNumber
+    raise SystemExit('Signal #%s.' % signalNumber)
 
 signal.signal(signal.SIGTERM, _termHandler)
 
@@ -102,7 +105,7 @@ def main():
                               'Ctrl-C at console.'
                     irc.queueMsg(ircmsgs.quit(quitmsg))
                     irc.die()
-        except SystemExit, e:
+        except SystemExit as e:
             s = str(e)
             if s:
                 log.info('Exiting due to %s', s)
@@ -110,17 +113,17 @@ def main():
         except:
             try: # Ok, now we're *REALLY* paranoid!
                 log.exception('Exception raised out of drivers.run:')
-            except Exception, e:
-                print 'Exception raised in log.exception.  This is *really*'
-                print 'bad.  Hopefully it won\'t happen again, but tell us'
-                print 'about it anyway, this is a significant problem.'
-                print 'Anyway, here\'s the exception: %s' % \
-                      utils.gen.exnToString(e)
+            except Exception as e:
+                print('Exception raised in log.exception.  This is *really*')
+                print('bad.  Hopefully it won\'t happen again, but tell us')
+                print('about it anyway, this is a significant problem.')
+                print('Anyway, here\'s the exception: %s' % \
+                      utils.gen.exnToString(e))
             except:
-                print 'Oh, this really sucks.  Not only did log.exception'
-                print 'raise an exception, but freaking-a, it was a string'
-                print 'exception.  People who raise string exceptions should'
-                print 'die a slow, painful death.'
+                print('Oh, this really sucks.  Not only did log.exception')
+                print('raise an exception, but freaking-a, it was a string')
+                print('exception.  People who raise string exceptions should')
+                print('die a slow, painful death.')
     httpserver.stopServer()
     now = time.time()
     seconds = now - world.startedAt
@@ -186,7 +189,7 @@ if __name__ == '__main__':
             # The registry *MUST* be opened before importing log or conf.
             registry.open_registry(registryFilename)
             shutil.copy(registryFilename, registryFilename + '.bak')
-        except registry.InvalidRegistryFile, e:
+        except registry.InvalidRegistryFile as e:
             s = '%s in %s.  Please fix this error and start supybot again.' % \
                 (e, registryFilename)
             s = textwrap.fill(s)
@@ -194,14 +197,14 @@ if __name__ == '__main__':
             sys.stderr.write(os.linesep)
             raise
             sys.exit(-1)
-        except EnvironmentError, e:
+        except EnvironmentError as e:
             sys.stderr.write(str(e))
             sys.stderr.write(os.linesep)
             sys.exit(-1)
 
     try:
         import supybot.log as log
-    except supybot.registry.InvalidRegistryValue, e:
+    except supybot.registry.InvalidRegistryValue as e:
         # This is raised here because supybot.log imports supybot.conf.
         name = e.value._name
         errmsg = textwrap.fill('%s: %s' % (name, e),
@@ -245,7 +248,7 @@ if __name__ == '__main__':
             child = os.fork()
             if child != 0:
                 if options.debug:
-                    print 'Parent exiting, child PID: %s' % child
+                    print('Parent exiting, child PID: %s' % child)
                 # We must us os._exit instead of sys.exit so atexit handlers
                 # don't run.  They shouldn't be dangerous, but they're ugly.
                 os._exit(0)
@@ -297,10 +300,10 @@ if __name__ == '__main__':
             def removePidFile():
                 try:
                     os.remove(pidFile)
-                except EnvironmentError, e:
+                except EnvironmentError as e:
                     log.error('Could not remove pid file: %s', e)
             atexit.register(removePidFile)
-        except EnvironmentError, e:
+        except EnvironmentError as e:
             log.critical('Error opening/writing pid file %s: %s', pidFile, e)
             sys.exit(-1)
 
diff --git a/scripts/supybot-adduser b/scripts/supybot-adduser
index 7a0162c0c..950865940 100644
--- a/scripts/supybot-adduser
+++ b/scripts/supybot-adduser
@@ -118,7 +118,7 @@ def main():
     ircdb.users.flush()
     #os.system('cat %s' % filename) # Was this here just for debugging?
     ircdb.users.close()
-    print 'User %s added.' % name
+    print('User %s added.' % name)
 
 if __name__ == '__main__':
     try:
diff --git a/scripts/supybot-botchk b/scripts/supybot-botchk
index 8d59e8068..9d406da3d 100644
--- a/scripts/supybot-botchk
+++ b/scripts/supybot-botchk
@@ -103,7 +103,7 @@ if __name__ == '__main__':
     try:
         pid = readPid(options.pidfile)
         debug('Found pidFile with proper pid contents of %s' % pid)
-    except ValueError, e:
+    except ValueError as e:
         foundBot = False
 
     if pid is not None:
@@ -118,7 +118,7 @@ if __name__ == '__main__':
         # so we go ahead and refuse to start it.
         try:
             open(options.pidfile, 'r+')
-        except EnvironmentError, e:
+        except EnvironmentError as e:
             debug('pidfile (%s) is not writable: %s' % (options.pidfile, e))
             sys.exit(-1)
         debug('Bot not found, starting.')
diff --git a/scripts/supybot-plugin-create b/scripts/supybot-plugin-create
index dfd674535..ed086b9b5 100644
--- a/scripts/supybot-plugin-create
+++ b/scripts/supybot-plugin-create
@@ -238,7 +238,7 @@ def main():
         if name.endswith('.py'):
             name = name[:-3]
         while name[0].islower():
-            print 'Plugin names must begin with a capital letter.'
+            print('Plugin names must begin with a capital letter.')
             name = something('What should the name of the plugin be?')
             if name.endswith('.py'):
                 name = name[:-3]
@@ -247,12 +247,12 @@ def main():
             error('A file or directory named %s already exists; remove or '
                   'rename it and run this program again.' % name)
 
-        print textwrap.fill(textwrap.dedent("""
+        print(textwrap.fill(textwrap.dedent("""
         Sometimes you'll want a callback to be threaded.  If its methods
         (command or regexp-based, either one) will take a significant amount
         of time to run, you'll want to thread them so they don't block the
-        entire bot.""").strip())
-        print
+        entire bot.""").strip()))
+        print()
         threaded = yn('Does your plugin need to be threaded?')
 
         realName = something(textwrap.dedent("""
@@ -270,7 +270,7 @@ def main():
     if name.endswith('.py'):
         name = name[:-3]
     while name[0].islower():
-        print 'Plugin names must begin with a capital.'
+        print('Plugin names must begin with a capital.')
         name = something('What should the name of the plugin be?')
         if name.endswith('.py'):
             name = name[:-3]
@@ -300,13 +300,13 @@ def main():
     writeFile('__init__.py',
               '# Stub so local is a module, used for third-party modules\n')
 
-    print 'Your new plugin template is in the %s directory.' % name
+    print('Your new plugin template is in the %s directory.' % name)
 
 if __name__ == '__main__':
     try:
         main()
     except KeyboardInterrupt:
-        print
+        print()
         output("""It looks like you cancelled out of this script before it was
         finished.  Obviously, nothing was written, but just run this script
         again whenever you want to generate a template for a plugin.""")
diff --git a/scripts/supybot-plugin-doc b/scripts/supybot-plugin-doc
index 6b6eb3639..4d43ad415 100644
--- a/scripts/supybot-plugin-doc
+++ b/scripts/supybot-plugin-doc
@@ -58,7 +58,7 @@ supybot.log.plugins.individualLogfiles: False
 supybot.databases: sqlite anydbm cdb flat pickle
 """)
     fd.close()
-except EnvironmentError, e:
+except EnvironmentError as e:
     error('Unable to open %s for writing.' % registryFilename)
 
 import supybot.registry as registry
@@ -224,12 +224,12 @@ class PluginDoc(object):
 
 def genDoc(m, options):
     Plugin = PluginDoc(m)
-    print 'Generating documentation for %s...' % Plugin.name
+    print('Generating documentation for %s...' % Plugin.name)
     path = os.path.join(options.outputDir, '%s.%s' % (Plugin.name,
                                                       options.format))
     try:
         fd = open(path, 'w')
-    except EnvironmentError, e:
+    except EnvironmentError as e:
         error('Unable to open %s for writing.' % path)
     f = getattr(Plugin, 'render%s' % options.format.upper(), None)
     if f is None:
@@ -283,7 +283,7 @@ if __name__ == '__main__':
             pluginName = pluginName[:-3]
         try:
             pluginModule = plugin.loadPluginModule(pluginName)
-        except ImportError, e:
+        except ImportError as e:
             s = 'Failed to load plugin %s: %s\n' \
                 '%s(pluginDirs: %s)' % (pluginName, e, s,
                                         conf.supybot.directories.plugins())
diff --git a/scripts/supybot-test b/scripts/supybot-test
index e1979a776..96f6e28e1 100644
--- a/scripts/supybot-test
+++ b/scripts/supybot-test
@@ -195,7 +195,7 @@ if __name__ == '__main__':
             pluginName = pluginName[:-3]
         try:
             pluginModule = plugin.loadPluginModule(pluginName)
-        except (ImportError, callbacks.Error), e:
+        except (ImportError, callbacks.Error) as e:
             sys.stderr.write('Failed to load plugin %s: %s\n' % (pluginName,e))
             sys.stderr.write('(pluginDirs: %s)\n' %
                              conf.supybot.directories.plugins())
@@ -205,7 +205,7 @@ if __name__ == '__main__':
 
     suite = unittest.TestSuite(test.suites)
     runner = unittest.TextTestRunner(verbosity=2)
-    print 'Testing began at %s (pid %s)' % (time.ctime(), os.getpid())
+    print('Testing began at %s (pid %s)' % (time.ctime(), os.getpid()))
     if options.clean:
         shutil.rmtree(conf.supybot.directories.log())
         shutil.rmtree(conf.supybot.directories.conf())
@@ -213,7 +213,7 @@ if __name__ == '__main__':
     result = runner.run(suite)
 
     if hasattr(unittest, 'asserts'):
-        print 'Total asserts: %s' % unittest.asserts
+        print('Total asserts: %s' % unittest.asserts)
 
     if result.wasSuccessful():
         sys.exit(0)
diff --git a/scripts/supybot-wizard b/scripts/supybot-wizard
index 50c7fee85..2150e439d 100644
--- a/scripts/supybot-wizard
+++ b/scripts/supybot-wizard
@@ -92,7 +92,7 @@ def loadPlugin(name):
             to load when we load the plugin.  We'll skip over it for now, but
             you can always add it later.""")
             return None
-    except Exception, e:
+    except Exception as e:
         output("""We encountered a bit of trouble trying to load plugin %r.
         Python told us %r.  We'll skip over it for now, you can always add it
         later.""" % (name, utils.gen.exnToString(e)))
@@ -140,7 +140,7 @@ def getDirectoryName(default, basedir=os.curdir, prompt=True):
         try:
             os.makedirs(dir)
             done = True
-        except OSError, e:
+        except OSError as e:
             # 17 is File exists for Linux (and likely other POSIX systems)
             # 183 is the same for Windows
             if e.args[0] == 17 or (os.name == 'nt' and e.args[0] == 183):
@@ -385,7 +385,7 @@ def main():
             try:
                 i = int(port)
                 if not (0 < i < 65536):
-                    raise ValueError
+                    raise ValueError()
             except ValueError:
                 output("""That's not a valid port.""")
                 port = 0
@@ -468,7 +468,7 @@ def main():
             try:
                 network.channels.set(channels)
                 break
-            except registry.InvalidRegistryValue, e:
+            except registry.InvalidRegistryValue as e:
                 output(""""%s" is an invalid IRC channel.  Be sure to prefix
                 the channel with # (or +, or !, or &, but no one uses those
                 channels, really).  Be sure the channel key (if you are
@@ -484,7 +484,7 @@ def main():
             output("""Beginning configuration for %s...""" %
                    module.Class.__name__)
             module.configure(advanced)
-            print # Blank line :)
+            print() # Blank line :)
             output("""Done!""")
         else:
             conf.registerPlugin(module.__name__, currentValue=True)
@@ -603,7 +603,7 @@ def main():
                 c = anything('What would you like your bot\'s prefix '
                              'character(s) to be?')
                 conf.supybot.reply.whenAddressedBy.chars.set(c)
-            except registry.InvalidRegistryValue, e:
+            except registry.InvalidRegistryValue as e:
                 output(str(e))
                 c = ''
     else:
@@ -704,9 +704,9 @@ if __name__ == '__main__':
         # We may still be using bold text when exiting during a prompt
         if questions.useBold:
             import supybot.ansi as ansi
-            print ansi.RESET
-        print
-        print
+            print(ansi.RESET)
+        print()
+        print()
         output("""Well, it looks like you canceled out of the wizard before
         it was done.  Unfortunately, I didn't get to write anything to file.
         Please run the wizard again to completion.""")