diff --git a/weboob/backends/arte/backend.py b/weboob/backends/arte/backend.py
index 754e815a..4c998747 100644
--- a/weboob/backends/arte/backend.py
+++ b/weboob/backends/arte/backend.py
@@ -36,7 +36,8 @@ class ArteBackend(BaseBackend, ICapVideo):
     VERSION = '0.5'
     DESCRIPTION = 'Arte french TV'
     LICENSE = 'GPLv3'
-    CONFIG = ValuesDict(Value('lang',    label='Lang of videos', choices={'fr': 'French', 'de': 'Deutsch', 'en': 'English'}, default='fr'),
+    CONFIG = ValuesDict(Value('lang', label='Lang of videos',
+                              choices={'fr': 'French', 'de': 'Deutsch', 'en': 'English'}, default='fr'),
                         Value('quality', label='Quality of videos', choices=['hd', 'sd'], default='hd'))
     BROWSER = ArteBrowser
 
diff --git a/weboob/backends/bnporc/captcha.py b/weboob/backends/bnporc/captcha.py
index ae11b8df..029664ac 100644
--- a/weboob/backends/bnporc/captcha.py
+++ b/weboob/backends/bnporc/captcha.py
@@ -25,7 +25,8 @@ class TileError(Exception):
         Exception.__init__(self, msg)
         self.tile = tile
 
-class Captcha:
+
+class Captcha(object):
     def __init__(self, file):
         self.inim = Image.open(file)
         self.nx,self.ny = self.inim.size
@@ -77,7 +78,8 @@ class Captcha:
             y += 25
             ty += 1
 
-class Tile:
+
+class Tile(object):
     hash = {'b2d25ae11efaaaec6dd6a4c00f0dfc29': 1,
             '600873fa288e75ca6cca092ae95bf129': 2,
             'da24ac28930feee169adcbc9bad4acaf': 3,
@@ -117,4 +119,3 @@ class Tile:
             for pxl in pxls:
                 sys.stdout.write('%02d' % pxl)
             sys.stdout.write('\n')
-
diff --git a/weboob/backends/bnporc/pages/account_coming.py b/weboob/backends/bnporc/pages/account_coming.py
index 7b072670..522208cf 100644
--- a/weboob/backends/bnporc/pages/account_coming.py
+++ b/weboob/backends/bnporc/pages/account_coming.py
@@ -24,7 +24,6 @@ __all__ = ['AccountComing']
 
 
 class AccountComing(BasePage):
-
     def on_loaded(self):
         self.operations = []
 
diff --git a/weboob/backends/bnporc/pages/account_history.py b/weboob/backends/bnporc/pages/account_history.py
index a5df0c98..db582b35 100644
--- a/weboob/backends/bnporc/pages/account_history.py
+++ b/weboob/backends/bnporc/pages/account_history.py
@@ -24,7 +24,6 @@ __all__ = ['AccountHistory']
 
 
 class AccountHistory(BasePage):
-
     def on_loaded(self):
         self.operations = []
 
diff --git a/weboob/backends/bnporc/pages/accounts_list.py b/weboob/backends/bnporc/pages/accounts_list.py
index b457938c..a167133c 100644
--- a/weboob/backends/bnporc/pages/accounts_list.py
+++ b/weboob/backends/bnporc/pages/accounts_list.py
@@ -24,6 +24,10 @@ from weboob.tools.browser import BasePage
 
 from ..errors import PasswordExpired
 
+
+__all__ = ['AccountsList']
+
+
 class AccountsList(BasePage):
     LINKID_REGEXP = re.compile(".*ch4=(\w+).*")
 
diff --git a/weboob/backends/bnporc/pages/login.py b/weboob/backends/bnporc/pages/login.py
index cc79c250..92b518e0 100644
--- a/weboob/backends/bnporc/pages/login.py
+++ b/weboob/backends/bnporc/pages/login.py
@@ -55,9 +55,11 @@ class LoginPage(BasePage):
         self.browser['ch5'] = img.get_codes(password)
         self.browser.submit()
 
+
 class ConfirmPage(BasePage):
     pass
 
+
 class ChangePasswordPage(BasePage):
     def change_password(self, current, new):
         img = Captcha(self.browser.openurl('/NSImgGrille'))
diff --git a/weboob/backends/bnporc/pages/transfer.py b/weboob/backends/bnporc/pages/transfer.py
index 782d9d1f..bdef646e 100644
--- a/weboob/backends/bnporc/pages/transfer.py
+++ b/weboob/backends/bnporc/pages/transfer.py
@@ -15,6 +15,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 import re
 
 from weboob.tools.browser import BasePage
@@ -56,6 +57,7 @@ class TransferPage(BasePage):
             self.browser['T5'] = reason
         self.browser.submit()
 
+
 class TransferConfirmPage(BasePage):
     def on_loaded(self):
         for td in self.document.getroot().cssselect('td#size2'):
@@ -67,6 +69,7 @@ class TransferConfirmPage(BasePage):
                 self.browser.location('/NS_VIRDA?stp=%s' % m.group(1))
                 return
 
+
 class TransferCompletePage(BasePage):
     def get_id(self):
         return self.group_dict['id']
diff --git a/weboob/backends/bouygues/backend.py b/weboob/backends/bouygues/backend.py
index 43090f44..18358e33 100644
--- a/weboob/backends/bouygues/backend.py
+++ b/weboob/backends/bouygues/backend.py
@@ -19,7 +19,6 @@
 from __future__ import with_statement
 
 from weboob.capabilities.messages import CantSendMessage, ICapMessages, ICapMessagesPost
-#from weboob.capabilities.account import ICapAccount, StatusField
 from weboob.tools.backend import BaseBackend
 from weboob.tools.value import ValuesDict, Value
 
diff --git a/weboob/backends/bp/backend.py b/weboob/backends/bp/backend.py
index 994098d7..4d1aea43 100644
--- a/weboob/backends/bp/backend.py
+++ b/weboob/backends/bp/backend.py
@@ -23,6 +23,9 @@ from weboob.tools.value import ValuesDict, Value
 from .browser import BPBrowser
 
 
+__all__ = ['BPBackend']
+
+
 class BPBackend(BaseBackend, ICapBank):
     NAME = 'bp'
     MAINTAINER = 'Nicolas Duhamel'
diff --git a/weboob/backends/canalplus/backend.py b/weboob/backends/canalplus/backend.py
index 933daa44..e205fe43 100644
--- a/weboob/backends/canalplus/backend.py
+++ b/weboob/backends/canalplus/backend.py
@@ -25,6 +25,7 @@ from weboob.tools.value import ValuesDict, Value
 from .browser import CanalplusBrowser
 from .pages import CanalplusVideo
 
+
 __all__ = ['CanalplusBackend']
 
 
@@ -57,7 +58,6 @@ class CanalplusBackend(BaseBackend, ICapVideo):
         if 'thumbnail' in fields:
             with self.browser:
                 video.thumbnail.data = self.browser.readurl(video.thumbnail.url)
-
         return video
 
     OBJECTS = {CanalplusVideo: fill_video}
diff --git a/weboob/backends/canalplus/browser.py b/weboob/backends/canalplus/browser.py
index e4a74c1c..f7e3827c 100644
--- a/weboob/backends/canalplus/browser.py
+++ b/weboob/backends/canalplus/browser.py
@@ -15,16 +15,21 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 import urllib
 
+import lxml.etree
+
 from weboob.tools.browser import BaseBrowser
 from weboob.tools.browser.decorators import id2url
 
 from .pages import InitPage, CanalplusVideo, VideoPage
 
-import lxml.etree
 
-class XMLParser:
+__all__ = ['CanalplusBrowser']
+
+
+class XMLParser(object):
      def parse(self, data, encoding=None):
         if encoding is None:
             parser = None
@@ -33,22 +38,21 @@ class XMLParser:
         return lxml.etree.XML(data.get_data(), parser)
 
 
-__all__ = ['CanalplusBrowser']
-
-
 class CanalplusBrowser(BaseBrowser):
     DOMAIN = u'service.canal-plus.com'
     ENCODING = 'utf-8'
-    PAGES = {r"http://service.canal-plus.com/video/rest/initPlayer/cplus/": InitPage,
-             r"http://service.canal-plus.com/video/rest/search/cplus/.*": VideoPage,
-             r"http://service.canal-plus.com/video/rest/getVideosLiees/cplus/(?P<id>.+)": VideoPage,
-    }
+    PAGES = {
+        r'http://service.canal-plus.com/video/rest/initPlayer/cplus/': InitPage,
+        r'http://service.canal-plus.com/video/rest/search/cplus/.*': VideoPage,
+        r'http://service.canal-plus.com/video/rest/getVideosLiees/cplus/(?P<id>.+)': VideoPage,
+        }
 
     #We need lxml.etree.XMLParser for read CDATA
     PARSER = XMLParser()
-    FORMATS = { 'sd': 'BAS_DEBIT',
-                'hd': 'HD'
-                }
+    FORMATS = {
+        'sd': 'BAS_DEBIT',
+        'hd': 'HD',
+        }
 
     def __init__(self, quality, *args, **kwargs):
         BaseBrowser.__init__(self, parser= self.PARSER, *args, **kwargs)
@@ -58,15 +62,13 @@ class CanalplusBrowser(BaseBrowser):
             self.quality = 'HD'
 
     def home(self):
-        self.location("http://service.canal-plus.com/video/rest/initPlayer/cplus/")
+        self.location('http://service.canal-plus.com/video/rest/initPlayer/cplus/')
 
     def iter_search_results(self, pattern):
-        self.location("http://service.canal-plus.com/video/rest/search/cplus/" + urllib.quote_plus(pattern))
+        self.location('http://service.canal-plus.com/video/rest/search/cplus/' + urllib.quote_plus(pattern))
         return self.page.iter_results()
 
     @id2url(CanalplusVideo.id2url)
     def get_video(self, url, video=None):
         self.location(url)
         return self.page.get_video(video, self.quality)
-
-
diff --git a/weboob/backends/canalplus/pages/initpage.py b/weboob/backends/canalplus/pages/initpage.py
index 847fb251..549948c3 100644
--- a/weboob/backends/canalplus/pages/initpage.py
+++ b/weboob/backends/canalplus/pages/initpage.py
@@ -15,26 +15,28 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 from weboob.tools.browser import BasePage
 
+
 __all__ = ['InitPage']
 
+
 class InitPage(BasePage):
-	def on_loaded(self):
-		channels = []
-		### Parse liste des channels
-		for elem in self.document[2].getchildren():
-			channel = {}
-			for e in elem.getchildren():
-				subchannels = []
-				if e.tag == "NOM":
-					channel['nom'] = e.text
-				elif e.tag == "SELECTIONS":
-			
-					for select in e:
-						subchannel = {}
-						subchannel['id'] = select[0].text
-						subchannel['nom'] = select[1].text
-						subchannels.append(subchannel)
-			channel['subchannels'] = subchannels
-			channels.append(channel)
+    def on_loaded(self):
+        channels = []
+        ### Parse liste des channels
+        for elem in self.document[2].getchildren():
+            channel = {}
+            for e in elem.getchildren():
+                subchannels = []
+                if e.tag == "NOM":
+                    channel['nom'] = e.text
+                elif e.tag == "SELECTIONS":
+                    for select in e:
+                        subchannel = {}
+                        subchannel['id'] = select[0].text
+                        subchannel['nom'] = select[1].text
+                        subchannels.append(subchannel)
+            channel['subchannels'] = subchannels
+            channels.append(channel)
diff --git a/weboob/backends/canaltp/browser.py b/weboob/backends/canaltp/browser.py
index c1820ee4..4bffc95e 100644
--- a/weboob/backends/canaltp/browser.py
+++ b/weboob/backends/canaltp/browser.py
@@ -17,9 +17,14 @@
 
 
 from datetime import datetime, date, time
+
 from weboob.tools.browser import BaseBrowser
-from weboob.tools.parsers.lxmlparser import SelectElementException
 from weboob.tools.misc import to_unicode
+from weboob.tools.parsers.lxmlparser import SelectElementException
+
+
+__all__ = ['CanalTP']
+
 
 class CanalTP(BaseBrowser):
     DOMAIN = 'widget.canaltp.fr'
diff --git a/weboob/backends/fourchan/backend.py b/weboob/backends/fourchan/backend.py
index 7b618e93..2f1df67a 100644
--- a/weboob/backends/fourchan/backend.py
+++ b/weboob/backends/fourchan/backend.py
@@ -34,7 +34,7 @@ class FourChanBackend(BaseBackend, ICapMessages):
     EMAIL = 'romain@weboob.org'
     VERSION = '0.5'
     LICENSE = 'GPLv3'
-    DESCRIPTION = "4chan website"
+    DESCRIPTION = '4chan website'
     CONFIG = ValuesDict(Value('boards', label='Boards to fetch'))
     STORAGE = {'boards': {}}
     BROWSER = FourChan
diff --git a/weboob/backends/fourchan/browser.py b/weboob/backends/fourchan/browser.py
index 5e6c86b3..6d4100d3 100644
--- a/weboob/backends/fourchan/browser.py
+++ b/weboob/backends/fourchan/browser.py
@@ -15,26 +15,27 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 from weboob.tools.browser import BaseBrowser
 
 from .pages.board import BoardPage
 
+
 class FourChan(BaseBrowser):
     DOMAIN = 'boards.4chan.org'
-    PAGES = {'http://boards.4chan.org/\w+/': BoardPage,
-             'http://boards.4chan.org/\w+/res/\d+': BoardPage,
-            }
+    PAGES = {
+        'http://boards.4chan.org/\w+/': BoardPage,
+        'http://boards.4chan.org/\w+/res/\d+': BoardPage,
+        }
 
     def is_logged(self):
         return True
 
     def get_threads(self, board):
         self.location('http://boards.4chan.org/%s/' % board)
-
         return self.page.articles
 
     def get_thread(self, board, id):
         self.location('http://boards.4chan.org/%s/res/%d' % (board, long(id)))
-
         assert len(self.page.articles) == 1
         return self.page.articles[0]
diff --git a/weboob/backends/fourchan/pages/board.py b/weboob/backends/fourchan/pages/board.py
index 24efb923..3fbb0088 100644
--- a/weboob/backends/fourchan/pages/board.py
+++ b/weboob/backends/fourchan/pages/board.py
@@ -15,12 +15,17 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
-from datetime import datetime
 
 import re
 
+from datetime import datetime
+
 from weboob.tools.browser import BasePage
 
+
+__all__ = ['BoardPage']
+
+
 class Message(object):
     def __init__(self, browser, board, id, filename=u'', url=u''):
         self.id = id
@@ -42,6 +47,7 @@ class Message(object):
     def __repr__(self):
         return '<Message id=%s filename=%s url=%s comments=%d>' % (self.id, self.filename, self.url, len(self.comments))
 
+
 class BoardPage(BasePage):
     URL_REGEXP = re.compile('http://boards.4chan.org/(\w+)/')
 
diff --git a/weboob/backends/gazelle/pages/index.py b/weboob/backends/gazelle/pages/index.py
index 1d727a93..c6da22b8 100644
--- a/weboob/backends/gazelle/pages/index.py
+++ b/weboob/backends/gazelle/pages/index.py
@@ -26,6 +26,7 @@ class IndexPage(BasePage):
     def is_logged(self):
         return 'id' in self.document.find('body').attrib
 
+
 class LoginPage(BasePage):
     def login(self, login, password):
         self.browser.select_form(nr=0)
diff --git a/weboob/backends/isohunt/backend.py b/weboob/backends/isohunt/backend.py
index e512d8a9..1348c330 100644
--- a/weboob/backends/isohunt/backend.py
+++ b/weboob/backends/isohunt/backend.py
@@ -15,6 +15,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 from weboob.capabilities.torrent import ICapTorrent
 from weboob.tools.backend import BaseBackend
 
@@ -31,10 +32,6 @@ class IsohuntBackend(BaseBackend, ICapTorrent):
     VERSION = '0.5'
     DESCRIPTION = 'isohunt.com bittorrent tracker'
     LICENSE = 'GPLv3'
-    #CONFIG = ValuesDict(Value('domain',   label='Domain (example "ssl.what.cd")'),
-    #                    Value('protocol', label='Protocol to use', choices=('http', 'https')),
-    #                    Value('username', label='Username'),
-    #                    Value('password', label='Password', masked=True))
     BROWSER = IsohuntBrowser
 
     def create_default_browser(self):
@@ -47,7 +44,6 @@ class IsohuntBackend(BaseBackend, ICapTorrent):
         torrent = self.browser.get_torrent(id)
         if not torrent:
             return None
-
         return self.browser.openurl(torrent.url.encode('utf-8')).read()
 
     def iter_torrents(self, pattern):
diff --git a/weboob/backends/isohunt/browser.py b/weboob/backends/isohunt/browser.py
index 47d79325..5e29e10d 100644
--- a/weboob/backends/isohunt/browser.py
+++ b/weboob/backends/isohunt/browser.py
@@ -30,24 +30,19 @@ class IsohuntBrowser(BaseBrowser):
     ENCODING = 'utf-8'
     USER_AGENT = BaseBrowser.USER_AGENTS['wget']
     PAGES = {
-             'https://isohunt.com/torrents/.*iht=-1&ihp=1&ihs1=2&iho1=d' : TorrentsPage,
-             'https://isohunt.com/torrent_details.*tab=summary' : TorrentPage
-             }
-
-    def __init__(self, *args, **kwargs):
-        BaseBrowser.__init__(self, *args, **kwargs)
+        'https://isohunt.com/torrents/.*iht=-1&ihp=1&ihs1=2&iho1=d' : TorrentsPage,
+        'https://isohunt.com/torrent_details.*tab=summary' : TorrentPage,
+        }
 
     def home(self):
         return self.location('https://isohunt.com')
 
     def iter_torrents(self, pattern):
         self.location('https://isohunt.com/torrents/%s?iht=-1&ihp=1&ihs1=2&iho1=d' % pattern)
-
         assert self.is_on_page(TorrentsPage)
         return self.page.iter_torrents()
 
     def get_torrent(self, id):
         self.location('https://isohunt.com/torrent_details/%s/?tab=summary' % id)
-
         assert self.is_on_page(TorrentPage)
         return self.page.get_torrent(id)
diff --git a/weboob/backends/isohunt/pages/torrents.py b/weboob/backends/isohunt/pages/torrents.py
index f70d503a..382d8100 100644
--- a/weboob/backends/isohunt/pages/torrents.py
+++ b/weboob/backends/isohunt/pages/torrents.py
@@ -16,29 +16,18 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 
-
-from weboob.tools.browser import BasePage
 from weboob.capabilities.torrent import Torrent
+from weboob.tools.browser import BasePage
+from weboob.tools.misc import get_bytes_size
 
 
 __all__ = ['TorrentsPage']
 
 
 class TorrentsPage(BasePage):
-    def unit(self, n, u):
-        m = {'KB': 1024,
-             'MB': 1024*1024,
-             'GB': 1024*1024*1024,
-             'TB': 1024*1024*1024*1024,
-            }
-        return float(n*m[u])
-
     def iter_torrents(self):
-
-
-
         for tr in self.document.getiterator('tr'):
-            if tr.attrib.get('class','') == 'hlRow':
+            if tr.attrib.get('class', '') == 'hlRow':
                 # TODO à corriger
                 atitle = tr.getchildren()[2].getchildren()[1]
                 title = atitle.text
@@ -57,41 +46,32 @@ class TorrentsPage(BasePage):
                 seed = tr.getchildren()[4].text
                 leech = tr.getchildren()[5].text
                 url = 'https://isohunt.com/download/%s/mon_joli_torrent.torrent' % idt
+                yield Torrent(idt,
+                              title,
+                              url=url,
+                              size=get_bytes_size(size, u),
+                              seeders=int(seed),
+                              leechers=int(leech))
 
-                torrent = Torrent(idt,
-                                  title,
-                                  url=url,
-                                  size=self.unit(size,u),
-                                  seeders=int(seed),
-                                  leechers=int(leech))
-                yield torrent
 
 class TorrentPage(BasePage):
-    def unit(self, n, u):
-        m = {'KB': 1024,
-             'MB': 1024*1024,
-             'GB': 1024*1024*1024,
-             'TB': 1024*1024*1024*1024,
-            }
-        return float(n*m[u])
-
     def get_torrent(self, id):
         title = ''
-        url = 'https://isohunt.com/download/%s/%s.torrent' % (id , id)
+        url = 'https://isohunt.com/download/%s/%s.torrent' % (id, id)
         for a in self.document.getiterator('a'):
-            if 'Search more torrents of' in a.attrib.get('title',''):
+            if 'Search more torrents of' in a.attrib.get('title', ''):
                 title = a.tail
         for span in self.document.getiterator('span'):
-            if span.attrib.get('style','') == 'color:green;' and ('ShowTip' in span.attrib.get('onmouseover','')):
+            if span.attrib.get('style', '') == 'color:green;' and ('ShowTip' in span.attrib.get('onmouseover', '')):
                 seed = span.tail.split(' ')[1]
-                tip_id = span.attrib.get('onmouseover','').split("'")[1]
+                tip_id = span.attrib.get('onmouseover', '').split("'")[1]
                 for div in self.document.getiterator('div'):
                     # find the corresponding super tip which appears on super mouse hover!
-                    if div.attrib.get('class','') == 'dirs ydsf' and tip_id in div.attrib.get('id',''):
+                    if div.attrib.get('class', '') == 'dirs ydsf' and tip_id in div.attrib.get('id', ''):
                         leech = div.getchildren()[0].getchildren()[1].tail.split(' ')[2]
                     # the <b> with the size in it doesn't have a distinction
                     # have to get it by higher
-                    elif div.attrib.get('id','') == 'torrent_details':
+                    elif div.attrib.get('id', '') == 'torrent_details':
                         size = div.getchildren()[6].getchildren()[0].getchildren()[0].text
                         u = size[-2:]
                         size = float(size[:-3])
@@ -104,7 +84,7 @@ class TorrentPage(BasePage):
         files = []
         count_p_found = 0
         for p in self.document.getiterator('p'):
-            if p.attrib.get('style','') == "line-height:1.2em;margin-top:1.8em":
+            if p.attrib.get('style', '') == 'line-height:1.2em;margin-top:1.8em':
                 count_p_found += 1
                 if count_p_found == 1:
                     description = p.getchildren()[1].tail
@@ -115,24 +95,20 @@ class TorrentPage(BasePage):
                         files.append(p.getchildren()[0].tail.strip())
 
         for td in self.document.getiterator('td'):
-            #print td.attrib.get('class')
-            if td.attrib.get('class','') == 'fileRows':
+            if td.attrib.get('class', '') == 'fileRows':
                 filename = td.text
-                #print "len"+str(len(td.getchildren()))
                 for slash in td.getchildren():
                     filename += '/'
                     filename += slash.tail
                 files.append(filename)
 
-                
         #--------------------------TODO
 
         torrent = Torrent(id, title)
         torrent.url = url
-        torrent.size = self.unit(size,u)
+        torrent.size = get_bytes_size(size, u)
         torrent.seeders = int(seed)
         torrent.leechers = int(leech)
         torrent.description = description
         torrent.files = files
-                    
         return torrent
diff --git a/weboob/backends/kickass/backend.py b/weboob/backends/kickass/backend.py
index 4e045a8b..748809cf 100644
--- a/weboob/backends/kickass/backend.py
+++ b/weboob/backends/kickass/backend.py
@@ -31,10 +31,6 @@ class KickassBackend(BaseBackend, ICapTorrent):
     VERSION = '0.5'
     DESCRIPTION = 'kickasstorrent.com bittorrent tracker'
     LICENSE = 'GPLv3'
-    #CONFIG = ValuesDict(Value('domain',   label='Domain (example "ssl.what.cd")'),
-    #                    Value('protocol', label='Protocol to use', choices=('http', 'https')),
-    #                    Value('username', label='Username'),
-    #                    Value('password', label='Password', masked=True))
     BROWSER = KickassBrowser
 
     def create_default_browser(self):
diff --git a/weboob/backends/kickass/browser.py b/weboob/backends/kickass/browser.py
index 14135ab4..c1f82264 100644
--- a/weboob/backends/kickass/browser.py
+++ b/weboob/backends/kickass/browser.py
@@ -30,43 +30,19 @@ class KickassBrowser(BaseBrowser):
     ENCODING = 'utf-8'
     USER_AGENT = BaseBrowser.USER_AGENTS['wget']
     PAGES = {
-             'http://fr.kickasstorrents.com/new/.*field=seeders&sorder=desc' : TorrentsPage,
-             'http://fr.kickasstorrents.com/.*.html' : TorrentPage
-             }
-
-    def __init__(self, *args, **kwargs):
-        #self.DOMAIN = domain
-        #self.PROTOCOL = protocol
-        #self.PAGES = {}
-        #for key, value in PiratebayBrowser.PAGES.iteritems():
-        #    self.PAGES[key % domain] = value
-
-        BaseBrowser.__init__(self, *args, **kwargs)
-
-    #def login(self):
-    #    if not self.is_on_page(LoginPage):
-    #        self.home()
-    #    self.page.login(self.username, self.password)
-
-    #def is_logged(self):
-    #    if not self.page or self.is_on_page(LoginPage):
-    #        return False
-    #    if self.is_on_page(IndexPage):
-    #        return self.page.is_logged()
-    #    return True
+        'http://fr.kickasstorrents.com/new/.*field=seeders&sorder=desc': TorrentsPage,
+        'http://fr.kickasstorrents.com/.*.html': TorrentPage,
+        }
 
     def home(self):
         return self.location('http://kickasstorrents.com')
 
     def iter_torrents(self, pattern):
-        #self.location(self.buildurl('/torrents.php', searchstr=pattern))
         self.location('http://fr.kickasstorrents.com/new/?q=%s&field=seeders&sorder=desc' % pattern)
-
         assert self.is_on_page(TorrentsPage)
         return self.page.iter_torrents()
 
     def get_torrent(self, id):
         self.location('http://fr.kickasstorrents.com/%s.html' % id)
-
         assert self.is_on_page(TorrentPage)
         return self.page.get_torrent(id)
diff --git a/weboob/backends/kickass/pages/torrents.py b/weboob/backends/kickass/pages/torrents.py
index da29769e..4911178b 100644
--- a/weboob/backends/kickass/pages/torrents.py
+++ b/weboob/backends/kickass/pages/torrents.py
@@ -16,28 +16,18 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 
-
-from weboob.tools.browser import BasePage
 from weboob.capabilities.torrent import Torrent
+from weboob.tools.browser import BasePage
+from weboob.tools.misc import get_bytes_size
 
 
 __all__ = ['TorrentsPage']
 
 
 class TorrentsPage(BasePage):
-    def unit(self, n, u):
-        m = {'bytes': 1,
-                'KB': 1024,
-                'MB': 1024*1024,
-                'GB': 1024*1024*1024,
-                'TB': 1024*1024*1024*1024,
-                }
-        return float(n*m[u])
-
     def iter_torrents(self):
-
         for tr in self.document.getiterator('tr'):
-            if tr.attrib.get('class','') == 'odd' or tr.attrib.get('class','') == ' even':
+            if tr.attrib.get('class', '') == 'odd' or tr.attrib.get('class', '') == ' even':
                 title = tr.getchildren()[0].getchildren()[1].getchildren()[1].text
                 if not title:
                     title = ''
@@ -46,78 +36,67 @@ class TorrentsPage(BasePage):
                         title += red.text
                     if red.tail:
                         title += red.tail
-                idt = tr.getchildren()[0].getchildren()[1].getchildren()[1].attrib.get('href','').replace('/','').replace('.html','')
-                url = tr.getchildren()[0].getchildren()[0].getchildren()[0].getchildren()[0].attrib.get('href','')
+                idt = tr.getchildren()[0].getchildren()[1].getchildren()[1].attrib.get('href', '').replace('/', '') \
+                    .replace('.html', '')
+                url = tr.getchildren()[0].getchildren()[0].getchildren()[0].getchildren()[0].attrib.get('href', '')
                 size = tr.getchildren()[1].text
                 u = tr.getchildren()[1].getchildren()[0].text
-                size = size = size.replace(',','.')
+                size = size = size.replace(',', '.')
                 size = float(size)
                 seed = tr.getchildren()[4].text
                 leech = tr.getchildren()[5].text
 
-                torrent = Torrent(idt,
-                                  title,
-                                  url=url,
-                                  size=self.unit(size,u),
-                                  seeders=int(seed),
-                                  leechers=int(leech))
-                yield torrent
+                yield Torrent(idt,
+                              title,
+                              url=url,
+                              size=get_bytes_size(size, u),
+                              seeders=int(seed),
+                              leechers=int(leech))
+
 
 class TorrentPage(BasePage):
-    def unit(self, n, u):
-        m = {'bytes': 1,
-                'KB': 1024,
-                'MB': 1024*1024,
-                'GB': 1024*1024*1024,
-                'TB': 1024*1024*1024*1024,
-                }
-        return float(n*m[u])
-
     def get_torrent(self, id):
-
         seed = 0
         leech = 0
-        description = "No description"
+        description = 'No description'
         url = 'No Url found'
         for div in self.document.getiterator('div'):
-            if div.attrib.get('id','') == 'desc':
+            if div.attrib.get('id', '') == 'desc':
                 description = div.text.strip()
                 for ch in div.getchildren():
                     if ch.tail != None:
                         description += ' '+ch.tail.strip()
-            if div.attrib.get('class','') == 'seedBlock':
+            if div.attrib.get('class', '') == 'seedBlock':
                 seed = int(div.getchildren()[1].text)
-            if div.attrib.get('class','') == 'leechBlock':
+            if div.attrib.get('class', '') == 'leechBlock':
                 leech = int(div.getchildren()[1].text)
 
         for h in self.document.getiterator('h1'):
-            if h.attrib.get('class','') == 'torrentName':
+            if h.attrib.get('class', '') == 'torrentName':
                 title = h.getchildren()[0].getchildren()[0].text
 
         for a in self.document.getiterator('a'):
-            if ('Download' in a.attrib.get('title','')) and ('torrent file' in a.attrib.get('title','')):
-                url = a.attrib.get('href','')
+            if ('Download' in a.attrib.get('title', '')) and ('torrent file' in a.attrib.get('title', '')):
+                url = a.attrib.get('href', '')
 
         size = 0
         for span in self.document.getiterator('span'):
-            if span.attrib.get('class','') == "folder" or span.attrib.get('class','') == "folderopen":
+            if span.attrib.get('class', '') == 'folder' or span.attrib.get('class', '') == 'folderopen':
                 size = span.getchildren()[1].tail
                 u = span.getchildren()[2].text
-                size = float(size.split(': ')[1].replace(',','.'))
+                size = float(size.split(': ')[1].replace(',', '.'))
 
         files = []
         for td in self.document.getiterator('td'):
-            if td.attrib.get('class','') == 'torFileName':
+            if td.attrib.get('class', '') == 'torFileName':
                 files.append(td.text)
 
-
         torrent = Torrent(id, title)
         torrent = Torrent(id, title)
         torrent.url = url
-        torrent.size = self.unit(size,u)
+        torrent.size = get_bytes_size(size, u)
         torrent.seeders = int(seed)
         torrent.leechers = int(leech)
         torrent.description = description
         torrent.files = files
-                    
         return torrent
diff --git a/weboob/backends/lcl/browser.py b/weboob/backends/lcl/browser.py
index 4c17adb3..124e0092 100644
--- a/weboob/backends/lcl/browser.py
+++ b/weboob/backends/lcl/browser.py
@@ -30,10 +30,11 @@ class LCLBrowser(BaseBrowser):
     DOMAIN = 'particuliers.secure.lcl.fr'
     ENCODING = 'utf-8'
     USER_AGENT = BaseBrowser.USER_AGENTS['wget']
-    PAGES = {'https://particuliers.secure.lcl.fr/index.html':   LoginPage,
-             'https://particuliers.secure.lcl.fr/everest/UWBI/UWBIAccueil\?DEST=IDENTIFICATION': LoginErrorPage,
-             'https://particuliers.secure.lcl.fr/outil/UWSP/Synthese/accesSynthese': AccountsPage
-            }
+    PAGES = {
+        'https://particuliers.secure.lcl.fr/index.html':   LoginPage,
+        'https://particuliers.secure.lcl.fr/everest/UWBI/UWBIAccueil\?DEST=IDENTIFICATION': LoginErrorPage,
+        'https://particuliers.secure.lcl.fr/outil/UWSP/Synthese/accesSynthese': AccountsPage,
+        }
 
     def __init__(self, agency, *args, **kwargs):
         self.agency = agency
diff --git a/weboob/backends/meteofrance/backend.py b/weboob/backends/meteofrance/backend.py
index 106154c7..fea1c4a0 100644
--- a/weboob/backends/meteofrance/backend.py
+++ b/weboob/backends/meteofrance/backend.py
@@ -15,6 +15,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+
 from weboob.capabilities.weather import ICapWeather
 from weboob.tools.backend import BaseBackend
 
@@ -31,10 +32,6 @@ class MeteofranceBackend(BaseBackend, ICapWeather):
     VERSION = '0.5'
     DESCRIPTION = 'Get forecasts from the MeteoFrance website'
     LICENSE = 'GPLv3'
-    #CONFIG = ValuesDict(Value('domain',   label='Domain (example "ssl.what.cd")'),
-    #                    Value('protocol', label='Protocol to use', choices=('http', 'https')),
-    #                    Value('username', label='Username'),
-    #                    Value('password', label='Password', masked=True))
     BROWSER = MeteofranceBrowser
 
     def create_default_browser(self):
diff --git a/weboob/backends/meteofrance/browser.py b/weboob/backends/meteofrance/browser.py
index fe230f2b..00e82920 100644
--- a/weboob/backends/meteofrance/browser.py
+++ b/weboob/backends/meteofrance/browser.py
@@ -31,14 +31,16 @@ class MeteofranceBrowser(BaseBrowser):
     PROTOCOL = 'http'
     ENCODING = 'utf-8'
     USER_AGENT = BaseBrowser.USER_AGENTS['wget']
-    WEATHER_URL = "{0}://{1}/france/meteo?PREVISIONS_PORTLET.path=previsionsville/{{cityid}}".format(PROTOCOL, DOMAIN)
-    CITY_SEARCH_URL="{0}://{1}/france/accueil/resultat?RECHERCHE_RESULTAT_PORTLET.path=rechercheresultat&query={{city_pattern}}&type=PREV_FRANCE&satellite=france".format(PROTOCOL, DOMAIN)
+    WEATHER_URL = '{0}://{1}/france/meteo?PREVISIONS_PORTLET.path=previsionsville/{{cityid}}'.format(PROTOCOL, DOMAIN)
+    CITY_SEARCH_URL = '{0}://{1}/france/accueil/resultat?RECHERCHE_RESULTAT_PORTLET.path=rechercheresultat&' \
+        'query={{city_pattern}}&type=PREV_FRANCE&satellite=france'.format(PROTOCOL, DOMAIN)
     PAGES = {
-             WEATHER_URL.format(cityid=".*") : WeatherPage,
-             CITY_SEARCH_URL.format(city_pattern=".*") : CityPage,
-             "http://france.meteofrance.com/france/accueil/resultat.*" : CityPage,
-             "http://france.meteofrance.com/france/meteo.*" : WeatherPage
-            }
+        WEATHER_URL.format(cityid=".*"): WeatherPage,
+        CITY_SEARCH_URL.format(city_pattern=".*"): CityPage,
+        'http://france.meteofrance.com/france/accueil/resultat.*': CityPage,
+        'http://france.meteofrance.com/france/meteo.*': WeatherPage,
+        }
+
     def __init__(self, *args, **kwargs):
         BaseBrowser.__init__(self, *args, **kwargs)
 
diff --git a/weboob/backends/meteofrance/pages/meteo.py b/weboob/backends/meteofrance/pages/meteo.py
index 6b6d0af0..930abd47 100644
--- a/weboob/backends/meteofrance/pages/meteo.py
+++ b/weboob/backends/meteofrance/pages/meteo.py
@@ -22,6 +22,7 @@ from weboob.capabilities.weather import Forecast, Current, City
 
 import datetime
 
+
 __all__ = ['WeatherPage', 'CityPage']
 
 
@@ -60,16 +61,15 @@ class WeatherPage(BasePage):
                 mdate = datetime.datetime.now()
                 return Current(mdate, temp, mtxt, "C")
 
-
     def get_city(self):
-        """Return the city from the forecastpage
+        """
+        Return the city from the forecastpage.
         """
         for div in self.document.getiterator('div'):
             if div.attrib.has_key("class") and div.attrib.get("class") == "choix":
                 for strong in div.getiterator("strong"):
                     city_name=strong.text +" "+ strong.tail.replace("(","").replace(")","")
                     city_id=self.url.split("/")[-1]
-
                     return City(city_id, city_name)
 
 
diff --git a/weboob/tools/misc.py b/weboob/tools/misc.py
index 4f7b6fa4..b9b93048 100644
--- a/weboob/tools/misc.py
+++ b/weboob/tools/misc.py
@@ -16,14 +16,68 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 
-from logging import warning
 from dateutil import tz
+from logging import warning
 import sys
 import traceback
 import types
 
 
-__all__ = ['to_unicode', 'local2utc', 'html2text', 'get_backtrace', 'iter_fields']
+__all__ = ['get_backtrace', 'get_bytes_size', 'html2text', 'iter_fields', 'local2utc', 'to_unicode', 'utc2local']
+
+
+def get_backtrace(empty="Empty backtrace."):
+    """
+    Try to get backtrace as string.
+    Returns "Error while trying to get backtrace" on failure.
+    """
+    try:
+        info = sys.exc_info()
+        trace = traceback.format_exception(*info)
+        sys.exc_clear()
+        if trace[0] != "None\n":
+            return "".join(trace)
+    except:
+        # No i18n here (imagine if i18n function calls error...)
+        return "Error while trying to get backtrace"
+    return empty
+
+
+def get_bytes_size(size, unit_name):
+    unit_data = {
+        'bytes': 1,
+        'KB': 1024,
+        'MB': 1024 * 1024,
+        'GB': 1024 * 1024 * 1024,
+        'TB': 1024 * 1024 * 1024 * 1024,
+        }
+    return float(size * unit_data[unit_name])
+
+
+try:
+    import html2text as h2t
+    h2t.UNICODE_SNOB = 1
+    h2t.SKIP_INTERNAL_LINKS = True
+    html2text = h2t.html2text
+except ImportError:
+    warning('python-html2text is not present. HTML pages will not be converted into text.')
+    def html2text(s):
+        return s
+
+
+def iter_fields(obj):
+    for attribute_name in dir(obj):
+        if attribute_name.startswith('_'):
+            continue
+        attribute = getattr(obj, attribute_name)
+        if not isinstance(attribute, types.MethodType):
+            yield attribute_name, attribute
+
+
+def local2utc(d):
+    d = d.replace(tzinfo=tz.tzlocal())
+    d = d.astimezone(tz.tzutc())
+    return d
 
 
 def to_unicode(text):
@@ -47,57 +101,8 @@ def to_unicode(text):
         except UnicodeError:
             return unicode(text, 'windows-1252')
 
-def local2utc(d):
-    d = d.replace(tzinfo=tz.tzlocal())
-    d = d.astimezone(tz.tzutc())
-    return d
 
 def utc2local(d):
     d = d.replace(tzinfo=tz.tzutc())
     d = d.astimezone(tz.tzlocal())
     return d
-
-try:
-    import html2text as h2t
-    h2t.UNICODE_SNOB = 1
-    h2t.SKIP_INTERNAL_LINKS = True
-    html2text = h2t.html2text
-except ImportError:
-    warning('python-html2text is not present. HTML pages will not be converted into text.')
-    def html2text(s):
-        return s
-
-def get_backtrace(empty="Empty backtrace."):
-    """
-    Try to get backtrace as string.
-    Returns "Error while trying to get backtrace" on failure.
-    """
-    try:
-        info = sys.exc_info()
-        trace = traceback.format_exception(*info)
-        sys.exc_clear()
-        if trace[0] != "None\n":
-            return "".join(trace)
-    except:
-        # No i18n here (imagine if i18n function calls error...)
-        return "Error while trying to get backtrace"
-    return empty
-
-def iter_fields(obj):
-    for attribute_name in dir(obj):
-        if attribute_name.startswith('_'):
-            continue
-        attribute = getattr(obj, attribute_name)
-        if not isinstance(attribute, types.MethodType):
-            yield attribute_name, attribute
-
-def iternb(it, nb=0):
-    """
-    Iter 'nb' times on the generator
-    """
-    i = 0
-    for v in it:
-        if i >= nb:
-            raise StopIteration()
-        yield v
-        i += 1