diff --git a/SABnzbd.py b/SABnzbd.py
index e0cdb20..aba2402 100755
--- a/SABnzbd.py
+++ b/SABnzbd.py
@@ -1333,7 +1333,6 @@ def main():
                             'error_page.404': sabnzbd.panic.error_page_404
                             })
 
-
     # Do we want CherryPy Logging? Cannot be done via the config
     if cherrypylogging:
         sabnzbd.WEBLOGFILE = os.path.join(logdir, DEF_LOG_CHERRY)
diff --git a/sabnzbd/__init__.py b/sabnzbd/__init__.py
index d814a34..355b079 100644
--- a/sabnzbd/__init__.py
+++ b/sabnzbd/__init__.py
@@ -108,7 +108,7 @@ import sabnzbd.lang as lang
 import sabnzbd.api
 from sabnzbd.decorators import synchronized, synchronized_CV, IO_LOCK
 from sabnzbd.constants import NORMAL_PRIORITY, VALID_ARCHIVES, GIGI, \
-     REPAIR_REQUEST, QUEUE_FILE_NAME, QUEUE_VERSION, QUEUE_FILE_TMPL
+    REPAIR_REQUEST, QUEUE_FILE_NAME, QUEUE_VERSION, QUEUE_FILE_TMPL
 import sabnzbd.getipaddress as getipaddress
 
 LINUX_POWER = powersup.HAVE_DBUS
@@ -173,10 +173,10 @@ __SHUTTING_DOWN__ = False
 ##############################################################################
 def sig_handler(signum=None, frame=None):
     global SABSTOP, WINTRAY
-    if sabnzbd.WIN32 and type(signum) != type(None) and DAEMON and signum == 5:
+    if sabnzbd.WIN32 and signum is not None and DAEMON and signum == 5:
         # Ignore the "logoff" event when running as a Win32 daemon
         return True
-    if type(signum) != type(None):
+    if signum is not None:
         logging.warning(T('Signal %s caught, saving and exiting...'), signum)
     try:
         save_state()
diff --git a/sabnzbd/api.py b/sabnzbd/api.py
index 9565b27..c557db8 100644
--- a/sabnzbd/api.py
+++ b/sabnzbd/api.py
@@ -1584,6 +1584,7 @@ def Tspec(txt):
     else:
         return txt
 
+
 _SKIN_CACHE = {}    # Stores pre-translated acronyms
 # This special is to be used in interface.py for template processing
 # to be passed for the $T function: so { ..., 'T' : Ttemplate, ...}
@@ -1654,7 +1655,6 @@ def build_header(webdir='', output=None):
         header['session'] = cfg.api_key()
         header['new_release'], header['new_rel_url'] = sabnzbd.NEW_VERSION
 
-
     header['version'] = sabnzbd.__version__
     header['paused'] = Downloader.do.paused or Downloader.do.postproc
     header['pause_int'] = scheduler.pause_int()
diff --git a/sabnzbd/assembler.py b/sabnzbd/assembler.py
index ba21a1e..903afd8 100644
--- a/sabnzbd/assembler.py
+++ b/sabnzbd/assembler.py
@@ -134,10 +134,10 @@ class Assembler(Thread):
 
                     filter, reason = nzo_filtered_by_rating(nzo)
                     if filter == 1:
-                        logging.warning(Ta('WARNING: Paused job "%s" because of rating (%s)'), nzo.final_name, reason)
+                        logging.warning(T('WARNING: Paused job "%s" because of rating (%s)'), nzo.final_name, reason)
                         nzo.pause()
                     elif filter == 2:
-                        logging.warning(Ta('WARNING: Aborted job "%s" because of rating (%s)'), nzo.final_name, reason)
+                        logging.warning(T('WARNING: Aborted job "%s" because of rating (%s)'), nzo.final_name, reason)
                         nzo.fail_msg = T('Aborted, rating filter matched (%s)') % reason
                         sabnzbd.nzbqueue.NzbQueue.do.end_job(nzo)
             else:
diff --git a/sabnzbd/database.py b/sabnzbd/database.py
index ed36d78..1ebb1bb 100644
--- a/sabnzbd/database.py
+++ b/sabnzbd/database.py
@@ -531,7 +531,7 @@ def unpack_history_info(item):
     if item['script_log']:
         item['script_log'] = ''
     # The action line is only available for items in the postproc queue
-    if not item.has_key('action_line'):
+    if 'action_line' not in item:
         item['action_line'] = ''
     return item
 
diff --git a/sabnzbd/emailer.py b/sabnzbd/emailer.py
index fdd6982..99ddaee 100644
--- a/sabnzbd/emailer.py
+++ b/sabnzbd/emailer.py
@@ -354,7 +354,7 @@ def _prepare_message(txt):
     msg.set_payload('\n'.join(payload), code)
 
     # Check for proper encoding, else call it explicitly
-    if not msg.has_key('Content-Transfer-Encoding'):
+    if 'Content-Transfer-Encoding' not in msg:
         encode_quopri(msg)
 
     return msg.as_string()
diff --git a/sabnzbd/newsunpack.py b/sabnzbd/newsunpack.py
index a7e1fcc..5f00ec1 100644
--- a/sabnzbd/newsunpack.py
+++ b/sabnzbd/newsunpack.py
@@ -37,7 +37,6 @@ from sabnzbd.misc import format_time_string, find_on_path, make_script_path, int
 from sabnzbd.tvsort import SeriesSorter
 import sabnzbd.cfg as cfg
 from sabnzbd.constants import Status, QCHECK_FILE, RENAMES_FILE
-load_data = save_data = None
 
 if sabnzbd.WIN32:
     try:
@@ -85,8 +84,6 @@ RAR_VERSION = 0
 
 def find_programs(curdir):
     """ Find external programs """
-    global load_data, save_data
-
     def check(path, program):
         p = os.path.abspath(os.path.join(path, program))
         if os.access(p, os.X_OK):
@@ -94,10 +91,6 @@ def find_programs(curdir):
         else:
             return None
 
-    # Another crazy Python import bug work-around
-    load_data = sabnzbd.load_data
-    save_data = sabnzbd.save_data
-
     if sabnzbd.DARWIN:
         sabnzbd.newsunpack.PAR2C_COMMAND = check(curdir, 'osx/par2/par2-classic')
         sabnzbd.newsunpack.PAR2_COMMAND = check(curdir, 'osx/par2/par2-sl64')
@@ -1590,10 +1583,10 @@ def PAR_Verify(parfile, parfile_nzf, nzo, setname, joinables, classic=False, sin
 
     # If successful, add renamed files to the collection
     if finished and renames:
-        previous = load_data(RENAMES_FILE, nzo.workpath, remove=False)
+        previous = sabnzbd.load_data(RENAMES_FILE, nzo.workpath, remove=False)
         for name in previous or {}:
             renames[name] = previous[name]
-        save_data(renames, RENAMES_FILE, nzo.workpath)
+        sabnzbd.save_data(renames, RENAMES_FILE, nzo.workpath)
 
     # If successful and files were reconstructed, remove incomplete original files
     if finished and reconstructed:
@@ -1969,10 +1962,10 @@ def MultiPar_Verify(parfile, parfile_nzf, nzo, setname, joinables, classic=False
     # But the ones in 'Finding available slices'-section will only be renamed after succesfull repair
     if renames:
         # Adding to the collection
-        previous = load_data(RENAMES_FILE, nzo.workpath, remove=False)
+        previous = sabnzbd.load_data(RENAMES_FILE, nzo.workpath, remove=False)
         for name in previous or {}:
             renames[name] = previous[name]
-        save_data(renames, RENAMES_FILE, nzo.workpath)
+        sabnzbd.save_data(renames, RENAMES_FILE, nzo.workpath)
 
         # If succes, we also remove the possibly previously renamed ones
         if finished and previous:
@@ -2233,10 +2226,10 @@ def QuickCheck(set, nzo):
 
     # Save renames
     if renames:
-        previous = load_data(RENAMES_FILE, nzo.workpath, remove=False)
+        previous = sabnzbd.load_data(RENAMES_FILE, nzo.workpath, remove=False)
         for name in previous or {}:
             renames[name] = previous[name]
-        save_data(renames, RENAMES_FILE, nzo.workpath)
+        sabnzbd.save_data(renames, RENAMES_FILE, nzo.workpath)
     return result
 
 
diff --git a/sabnzbd/nzbstuff.py b/sabnzbd/nzbstuff.py
index 5d6e63c..bf42312 100644
--- a/sabnzbd/nzbstuff.py
+++ b/sabnzbd/nzbstuff.py
@@ -1128,7 +1128,7 @@ class NzbObject(TryList):
         if self.unwanted_ext and self.status == 'Paused':
             prefix += T('UNWANTED') + ' / '  # : Queue indicator for unwanted extensions
         if self.rating_filtered and self.status == 'Paused':
-            prefix += Ta('FILTERED') + ' / '  # : Queue indicator for filtered
+            prefix += T('FILTERED') + ' / '  # : Queue indicator for filtered
         if isinstance(self.wait, float):
             dif = int(self.wait - time.time() + 0.5)
             if dif > 0:
diff --git a/sabnzbd/urlgrabber.py b/sabnzbd/urlgrabber.py
index 105473e..bb5f762 100644
--- a/sabnzbd/urlgrabber.py
+++ b/sabnzbd/urlgrabber.py
@@ -42,7 +42,7 @@ import sabnzbd.notifier as notifier
 
 _BAD_GZ_HOSTS = ('.zip', 'nzbsa.co.za', 'newshost.za.net')
 _RARTING_FIELDS = ('x-rating-id', 'x-rating-url', 'x-rating-host', 'x-rating-video', 'x-rating-videocnt', 'x-rating-audio', 'x-rating-audiocnt',
-                    'x-rating-voteup', 'x-rating-votedown', 'x-rating-spam', 'x-rating-confirmed-spam', 'x-rating-passworded', 'x-rating-confirmed-passworded')
+    'x-rating-voteup', 'x-rating-votedown', 'x-rating-spam', 'x-rating-confirmed-spam', 'x-rating-passworded', 'x-rating-confirmed-passworded')
 
 
 class URLGrabber(Thread):
diff --git a/sabnzbd/utils/systrayiconthread.py b/sabnzbd/utils/systrayiconthread.py
index a16fe25..57e92f6 100644
--- a/sabnzbd/utils/systrayiconthread.py
+++ b/sabnzbd/utils/systrayiconthread.py
@@ -6,8 +6,6 @@
 #  override doUpdates to perform actions inside the icon thread
 
 import os
-import sys
-
 import pywintypes
 import win32api
 import win32con
@@ -204,7 +202,7 @@ class SysTrayIconThread(Thread):
             win32gui.PostMessage(self.hwnd, win32con.WM_NULL, 0, 0)
         except pywintypes.error:
             # Weird PyWin/win32gui bug, just ignore it for now
-            logging.debug('win32gui problem, cannot show SysTray menu')
+            pass
 
     def create_menu(self, menu, menu_options):
         for option_text, option_icon, option_action, option_id in menu_options[::-1]:
diff --git a/sabnzbd/wizard.py b/sabnzbd/wizard.py
index c7c3ef0..f29a1b2 100644
--- a/sabnzbd/wizard.py
+++ b/sabnzbd/wizard.py
@@ -27,7 +27,6 @@ from Cheetah.Template import Template
 import sabnzbd
 import sabnzbd.api
 from sabnzbd.lang import list_languages, set_language
-from sabnzbd.utils.servertests import test_nntp_server_dict
 from sabnzbd.api import Ttemplate
 import sabnzbd.interface
 import sabnzbd.config as config