diff --git a/.travis.yml b/.travis.yml
index e0dc03e..3538c40 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,9 +15,11 @@ matrix:
       env: NOVA_DIR=nova3
 
 install:
-  - pip install pyflakes
+  - pip install pycodestyle pyflakes
 
 script:
-  - cd "$TRAVIS_BUILD_DIR"
-  - python -m compileall "$NOVA_DIR/engines/"*.py
-  - pyflakes "$NOVA_DIR/engines/"*.py
+  - cd "$TRAVIS_BUILD_DIR/$NOVA_DIR/engines"
+  - python -m compileall *.py
+  - pyflakes *.py
+  # skipping E265, fixing it will break plugin usage on older qbt instances (< v4.1.2)
+  - pycodestyle --ignore=E265,W503 --max-line-length=100 --statistics *.py
diff --git a/nova/engines/btdb.py b/nova/engines/btdb.py
index 6777899..62913d5 100644
--- a/nova/engines/btdb.py
+++ b/nova/engines/btdb.py
@@ -1,6 +1,6 @@
-#VERSION: 1.03
-#AUTHORS: Charles Worthing
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 1.04
+# AUTHORS: Charles Worthing
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -27,10 +27,11 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 from HTMLParser import HTMLParser
-#qBt
+# qBt
 from novaprinter import prettyPrinter
 from helpers import download_file, retrieve_url
 
+
 class btdb(object):
     """ Search engine class """
     url = 'https://btdb.to'
@@ -46,9 +47,9 @@ class btdb(object):
             HTMLParser.__init__(self)
             self.results = results
             self.url = url
-            self.current_item = {} # One torrent result
+            self.current_item = {}  # One torrent result
             self.add_query = True
-            self.torrent_info_index = 0 # Count of the meta data encountered
+            self.torrent_info_index = 0  # Count of the meta data encountered
             self.torrent_info_array = []
             self.meta_data_grabbing = 0
             self.meta_data_array = []
@@ -85,15 +86,15 @@ class btdb(object):
                         if link.startswith("magnet:"):
                             self.magnet_link = link
 
-        def handle_endtag(self, tag): 
+        def handle_endtag(self, tag):
             if tag == "script":
                 return
             if tag == "div":
                 if self.meta_data_grabbing > 0:
-                    
-                    self.torrent_no_files = self.meta_data_array[2] # Not used
-                    self.torrent_date_added = self.meta_data_array[4] # Not used
-                    self.torrent_popularity = self.meta_data_array[6] # Not used
+
+                    self.torrent_no_files = self.meta_data_array[2]  # Not used
+                    self.torrent_date_added = self.meta_data_array[4]  # Not used
+                    self.torrent_popularity = self.meta_data_array[6]  # Not used
 
                     self.current_item["size"] = self.meta_data_array[0]
                     self.current_item["name"] = self.torrent_name
diff --git a/nova/engines/eztv.py b/nova/engines/eztv.py
index 05a8c8f..4213767 100644
--- a/nova/engines/eztv.py
+++ b/nova/engines/eztv.py
@@ -1,6 +1,6 @@
-#VERSION: 1.00
-#AUTHORS: nindogo
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 1.01
+# AUTHORS: nindogo
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 try:
     # python3
@@ -13,6 +13,7 @@ except ImportError:
 from novaprinter import prettyPrinter
 from helpers import retrieve_url
 
+
 class eztv(object):
     name = "EZTV"
     url = 'https://eztv.ag'
@@ -45,13 +46,16 @@ class eztv(object):
                 self.current_item['desc_link'] = self.url + params.get('href')
                 self.current_item['name'] = params.get('title').split(' (')[0]
 
-            if tag == self.TD and params.get('class') == 'forum_thread_post_end' and params.get('align') == 'center':
+            if (tag == self.TD
+                    and params.get('class') == 'forum_thread_post_end'
+                    and params.get('align') == 'center'):
                 prettyPrinter(self.current_item)
                 self.in_table_row = False
 
         def handle_data(self, data):
             data = data.replace(',', '')
-            if self.in_table_row and (data.endswith('MB') or data.endswith('GB') or data.endswith('KB')):
+            if (self.in_table_row
+                    and (data.endswith('MB') or data.endswith('GB') or data.endswith('KB'))):
                 self.current_item['size'] = data
 
             if self.in_table_row and (data.isalnum() or data == '-'):
@@ -65,13 +69,14 @@ class eztv(object):
                 self.in_table_row = False
 
     def search(self, what, cat='all'):
-        query = self.url + '/search/' + what.replace('%20','-')
+        query = self.url + '/search/' + what.replace('%20', '-')
         eztv_html = retrieve_url(query)
 
         eztv_parser = self.MyHtmlParser(self.url)
         eztv_parser.feed(eztv_html)
         eztv_parser.close()
 
+
 if __name__ == '__main__':
     eztv_se = eztv()
     eztv_se.search('Acre', 'all')
diff --git a/nova/engines/legittorrents.py b/nova/engines/legittorrents.py
index 5cacfc8..d9be445 100644
--- a/nova/engines/legittorrents.py
+++ b/nova/engines/legittorrents.py
@@ -1,6 +1,6 @@
-#VERSION: 2.02
-#AUTHORS: Christophe Dumez (chris@qbittorrent.org)
-#         Douman (custparasite@gmx.se)
+#VERSION: 2.03
+# AUTHORS: Christophe Dumez (chris@qbittorrent.org)
+#          Douman (custparasite@gmx.se)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -26,16 +26,17 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-
 from novaprinter import prettyPrinter
 from helpers import retrieve_url, download_file
 from HTMLParser import HTMLParser
 from re import compile as re_compile
 
+
 class legittorrents(object):
     url = 'http://www.legittorrents.info'
     name = 'Legit Torrents'
-    supported_categories = {'all': '0', 'movies': '1', 'tv': '13', 'music': '2', 'games': '3', 'anime': '5', 'books': '6'}
+    supported_categories = {'all': '0', 'movies': '1', 'tv': '13',
+                            'music': '2', 'games': '3', 'anime': '5', 'books': '6'}
 
     def download_torrent(self, info):
         print(download_file(info))
@@ -55,13 +56,14 @@ class legittorrents(object):
                 if tag == "a":
                     link = params["href"]
                     if link.startswith("index") and "title" in params:
-                        #description link
+                        # description link
                         self.current_item["name"] = params["title"][14:]
                         self.current_item["desc_link"] = "/".join((self.url, link))
                     elif link.startswith("download"):
                         self.current_item["link"] = "/".join((self.url, link))
                 elif tag == "td":
-                    if "width" in params and params["width"] == "30" and not "leech" in self.current_item:
+                    if ("width" in params and params["width"] == "30"
+                            and "leech" not in self.current_item):
                         self.save_item_key = "leech" if "seeds" in self.current_item else "seeds"
 
             elif tag == "tr":
@@ -84,11 +86,12 @@ class legittorrents(object):
 
     def search(self, what, cat='all'):
         """ Performs search """
-        query = "".join((self.url, "/index.php?page=torrents&search=", what, "&category=", self.supported_categories.get(cat, '0'), "&active=1"))
+        query = "".join((self.url, "/index.php?page=torrents&search=", what, "&category=",
+                         self.supported_categories.get(cat, '0'), "&active=1"))
 
-        get_table = re_compile('(?s)<table\sclass="lista".*>(.*)</table>')
+        get_table = re_compile(r'(?s)<table\sclass="lista".*>(.*)</table>')
         data = get_table.search(retrieve_url(query)).group(0)
-        #extract first ten pages of next results
+        # extract first ten pages of next results
         next_pages = re_compile('(?m)<option value="(.*)">[0-9]+</option>')
         next_pages = ["".join((self.url, page)) for page in next_pages.findall(data)[:10]]
 
diff --git a/nova/engines/piratebay.py b/nova/engines/piratebay.py
index ba047d1..b7ee284 100644
--- a/nova/engines/piratebay.py
+++ b/nova/engines/piratebay.py
@@ -1,8 +1,8 @@
-#VERSION: 2.15
-#AUTHORS: Fabien Devaux (fab@gnux.info)
-#CONTRIBUTORS: Christophe Dumez (chris@qbittorrent.org)
-#              Arthur (custparasite@gmx.se)
-#              Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 2.16
+# AUTHORS: Fabien Devaux (fab@gnux.info)
+# CONTRIBUTORS: Christophe Dumez (chris@qbittorrent.org)
+#               Arthur (custparasite@gmx.se)
+#               Diego de las Heras (ngosang@hotmail.es)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -29,15 +29,17 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 from HTMLParser import HTMLParser
-#qBt
+# qBt
 from novaprinter import prettyPrinter
 from helpers import download_file, retrieve_url
 
+
 class piratebay(object):
     """ Search engine class """
     url = 'https://thepiratebay.org'
     name = 'The Pirate Bay'
-    supported_categories = {'all': '0', 'music': '100', 'movies': '200', 'games': '400', 'software': '300'}
+    supported_categories = {'all': '0', 'music': '100', 'movies': '200',
+                            'games': '400', 'software': '300'}
 
     def download_torrent(self, info):
         """ Downloader """
@@ -51,7 +53,7 @@ class piratebay(object):
             self.url = url
             self.current_item = None
             self.save_item = None
-            self.result_table = False #table with results is found
+            self.result_table = False  # table with results is found
             self.result_tbody = False
             self.add_query = True
             self.result_query = False
@@ -93,12 +95,14 @@ class piratebay(object):
         def handle_starttag(self, tag, attrs):
             """ Parser's start tag handler """
             if self.current_item:
-                dispatcher = getattr(self, "_".join(("handle_start_tag", tag)), self.handle_start_tag_default)
+                dispatcher = getattr(self,
+                                     "_".join(("handle_start_tag", tag)),
+                                     self.handle_start_tag_default)
                 dispatcher(attrs)
 
             elif self.result_tbody:
                 if tag == "tr":
-                    self.current_item = {"engine_url" : self.url}
+                    self.current_item = {"engine_url": self.url}
 
             elif tag == "table":
                 self.result_table = "searchResult" == attrs[0][1]
@@ -141,7 +145,8 @@ class piratebay(object):
                     temp_data = data.split()
                     if "Size" in temp_data:
                         indx = temp_data.index("Size")
-                        self.current_item[self.save_item] = temp_data[indx + 1] + " " + temp_data[indx + 2]
+                        self.current_item[self.save_item] = (temp_data[indx + 1] + " "
+                                                             + temp_data[indx + 2])
 
                 elif self.save_item == "name":
                     # names with special characters like '&' are splitted in several pieces
@@ -153,10 +158,9 @@ class piratebay(object):
                     self.current_item[self.save_item] = data
                     self.save_item = None
 
-
     def search(self, what, cat='all'):
         """ Performs search """
-        #prepare query. 7 is filtering by seeders
+        # prepare query. 7 is filtering by seeders
         cat = cat.lower()
         query = "/".join((self.url, "search", what, "0", "7", self.supported_categories[cat]))
 
diff --git a/nova/engines/torlock.py b/nova/engines/torlock.py
index f154bf0..d71e17c 100644
--- a/nova/engines/torlock.py
+++ b/nova/engines/torlock.py
@@ -1,23 +1,24 @@
-#VERSION: 2.0
-#AUTHORS: Douman (custparasite@gmx.se)
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 2.1
+# AUTHORS: Douman (custparasite@gmx.se)
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 from novaprinter import prettyPrinter
 from helpers import retrieve_url, download_file
 from re import compile as re_compile
 from HTMLParser import HTMLParser
 
+
 class torlock(object):
     url = "https://www.torlock.com"
     name = "TorLock"
-    supported_categories = {'all'      : 'all',
-                            'anime'    : 'anime',
-                            'software' : 'software',
-                            'games'    : 'game',
-                            'movies'   : 'movie',
-                            'music'    : 'music',
-                            'tv'       : 'television',
-                            'books'    : 'ebooks'}
+    supported_categories = {'all': 'all',
+                            'anime': 'anime',
+                            'software': 'software',
+                            'games': 'game',
+                            'movies': 'movie',
+                            'music': 'music',
+                            'tv': 'television',
+                            'books': 'ebooks'}
 
     def download_torrent(self, info):
         print(download_file(info))
@@ -27,14 +28,14 @@ class torlock(object):
         def __init__(self, url):
             HTMLParser.__init__(self)
             self.url = url
-            self.article_found = False #true when <article> with results is found
+            self.article_found = False  # true when <article> with results is found
             self.item_found = False
-            self.item_bad = False #set to True for malicious links
-            self.current_item = None #dict for found item
-            self.item_name = None #key's name in current_item dict
-            self.parser_class = {"ts"  : "size",
-                                 "tul" : "seeds",
-                                 "tdl" : "leech"}
+            self.item_bad = False  # set to True for malicious links
+            self.current_item = None  # dict for found item
+            self.item_name = None  # key's name in current_item dict
+            self.parser_class = {"ts": "size",
+                                 "tul": "seeds",
+                                 "tdl": "leech"}
 
         def handle_starttag(self, tag, attrs):
             params = dict(attrs)
@@ -50,7 +51,8 @@ class torlock(object):
                     link = params["href"]
                     if link.startswith("/torrent"):
                         self.current_item["desc_link"] = "".join((self.url, link))
-                        self.current_item["link"] = "".join((self.url, "/tor/", link.split('/')[2], ".torrent"))
+                        self.current_item["link"] = "".join((self.url, "/tor/",
+                                                             link.split('/')[2], ".torrent"))
                         self.current_item["engine_url"] = self.url
                         self.item_found = True
                         self.item_name = "name"
@@ -81,13 +83,15 @@ class torlock(object):
         query = query.replace("%20", "-")
 
         parser = self.MyHtmlParser(self.url)
-        page = "".join((self.url, "/", self.supported_categories[cat], "/torrents/", query, ".html?sort=seeds&page=1"))
+        page = "".join((self.url, "/", self.supported_categories[cat],
+                        "/torrents/", query, ".html?sort=seeds&page=1"))
         html = retrieve_url(page)
         parser.feed(html)
 
         counter = 1
-        additional_pages = re_compile("/{0}/torrents/{1}.html\?sort=seeds&page=[0-9]+".format(self.supported_categories[cat], query))
-        list_searches = additional_pages.findall(html)[:-1] #last link is next(i.e. second)
+        additional_pages = re_compile(r"/{0}/torrents/{1}.html\?sort=seeds&page=[0-9]+"
+                                      .format(self.supported_categories[cat], query))
+        list_searches = additional_pages.findall(html)[:-1]  # last link is next(i.e. second)
         for page in map(lambda link: "".join((self.url, link)), list_searches):
             html = retrieve_url(page)
             parser.feed(html)
diff --git a/nova/engines/versions.txt b/nova/engines/versions.txt
index 13233ec..934ecd6 100644
--- a/nova/engines/versions.txt
+++ b/nova/engines/versions.txt
@@ -1,6 +1,6 @@
-btdb: 1.03
-eztv: 1.00
-legittorrents: 2.02
-piratebay: 2.15
-torlock: 2.0
-zooqle: 1.12
+btdb: 1.04
+eztv: 1.01
+legittorrents: 2.03
+piratebay: 2.16
+torlock: 2.1
+zooqle: 1.13
diff --git a/nova/engines/zooqle.py b/nova/engines/zooqle.py
index 6e5f7f9..39a32ad 100644
--- a/nova/engines/zooqle.py
+++ b/nova/engines/zooqle.py
@@ -1,6 +1,6 @@
-#VERSION: 1.12
-#AUTHORS: Kanishk Singh (https://github.com/ArionMiles/)
-#CONTRIBUTORS: affaff (https://github.com/affaff)
+#VERSION: 1.13
+# AUTHORS: Kanishk Singh (https://github.com/ArionMiles/)
+# CONTRIBUTORS: affaff (https://github.com/affaff)
 
 # Copyright (c) 2017 Kanishk Singh
 
@@ -25,11 +25,12 @@
 
 from xml.dom import minidom
 from novaprinter import prettyPrinter
-user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
-headers    = {'User-Agent': user_agent}
-
 from io import StringIO
 import gzip
+
+user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
+headers = {'User-Agent': user_agent}
+
 try:
     from urllib2 import urlopen, Request, URLError
 except ImportError:
@@ -38,7 +39,7 @@ except ImportError:
 
 def retrieve_url_nodecode(url):
     """ Return the content of the url page as a string """
-    req = Request(url, headers = headers)
+    req = Request(url, headers=headers)
     try:
         response = urlopen(req)
     except URLError as errno:
@@ -56,50 +57,63 @@ def retrieve_url_nodecode(url):
         return dat
     return dat
 
+
 class zooqle(object):
     """ Search engine class """
     url = 'https://zooqle.com'
     name = 'Zooqle'
-    supported_categories = {'all'       : 'all',
-                            'movies'    : 'Movies',
-                            'tv'        : 'TV',
-                            'music'     : 'Music',
-                            'games'     : 'Games',
-                            'anime'     : 'Anime',
-                            'software'  : 'Apps',
-                            'books'     : 'Books'}
+    supported_categories = {'all': 'all',
+                            'movies': 'Movies',
+                            'tv': 'TV',
+                            'music': 'Music',
+                            'games': 'Games',
+                            'anime': 'Anime',
+                            'software': 'Apps',
+                            'books': 'Books'}
+
     def search(self, what, cat="all"):
         """ Performs search """
         page = 1
         while page < 11:
-            query = "".join((self.url, "/search?q=", what, "+category%3A", self.supported_categories[cat], "&fmt=rss"))
-            if( page>1 ):
-                query = query + "&pg=" + str (page)
+            query = "".join((self.url, "/search?q=", what,
+                             "+category%3A", self.supported_categories[cat], "&fmt=rss"))
+            if page > 1:
+                query = query + "&pg=" + str(page)
             response = retrieve_url_nodecode(query)
             xmldoc = minidom.parseString(response)
             itemlist = xmldoc.getElementsByTagName('item')
-            if( len(itemlist ) ==0):
+            if len(itemlist) == 0:
                 return
             for item in itemlist:
-                zooqle_dict = zooqle_dict = {"engine_url" : self.url}
-                zooqle_dict['name'] = item.getElementsByTagName('title')[0].childNodes[0].data
-                zooqle_dict["size"] = item.getElementsByTagName('enclosure')[0].attributes['length'].childNodes[0].data
-                if( zooqle_dict["size"]=='0'):
-                    zooqle_dict["link"] = item.getElementsByTagName('torrent:magnetURI')[0].childNodes[0].data
+                zooqle_dict = zooqle_dict = {"engine_url": self.url}
+                zooqle_dict['name'] = (item.getElementsByTagName('title')[0]
+                                       .childNodes[0].data)
+                zooqle_dict["size"] = (item.getElementsByTagName('enclosure')[0]
+                                       .attributes['length'].childNodes[0].data)
+                if zooqle_dict["size"] == '0':
+                    zooqle_dict["link"] = (item.getElementsByTagName('torrent:magnetURI')[0]
+                                           .childNodes[0].data)
                 else:
-                    zooqle_dict["link"] = item.getElementsByTagName('enclosure')[0].attributes['url'].value
-                zooqle_dict["desc_link"] = item.getElementsByTagName('link')[0].childNodes[0].data
-                zooqle_dict["leech"] = item.getElementsByTagName('torrent:peers')[0].childNodes[0].data
+                    zooqle_dict["link"] = (item.getElementsByTagName('enclosure')[0]
+                                           .attributes['url'].value)
+                zooqle_dict["desc_link"] = (item.getElementsByTagName('link')[0]
+                                            .childNodes[0].data)
+                zooqle_dict["leech"] = (item.getElementsByTagName('torrent:peers')[0]
+                                        .childNodes[0].data)
                 if not zooqle_dict["leech"].isdigit():
                     zooqle_dict["leech"] = ''
-                zooqle_dict["seeds"] = item.getElementsByTagName('torrent:seeds')[0].childNodes[0].data
+                zooqle_dict["seeds"] = (item.getElementsByTagName('torrent:seeds')[0]
+                                        .childNodes[0].data)
                 if not zooqle_dict["seeds"].isdigit():
                     zooqle_dict["seeds"] = ''
                 prettyPrinter(zooqle_dict)
-            totalResultVal  = xmldoc.getElementsByTagName('opensearch:totalResults')[0].childNodes[0].data
-            startIndex  = xmldoc.getElementsByTagName('opensearch:startIndex')[0].childNodes[0].data
-            itemsPerPage = xmldoc.getElementsByTagName('opensearch:itemsPerPage')[0].childNodes[0].data
-            if( ( int(startIndex)  + int(itemsPerPage) > int( totalResultVal ))):
+            totalResultVal = (xmldoc.getElementsByTagName('opensearch:totalResults')[0]
+                                    .childNodes[0].data)
+            startIndex = (xmldoc.getElementsByTagName('opensearch:startIndex')[0]
+                                .childNodes[0].data)
+            itemsPerPage = (xmldoc.getElementsByTagName('opensearch:itemsPerPage')[0]
+                                  .childNodes[0].data)
+            if (int(startIndex) + int(itemsPerPage)) > int(totalResultVal):
                 return
             page += 1
         return
diff --git a/nova3/engines/btdb.py b/nova3/engines/btdb.py
index a362871..d17003d 100644
--- a/nova3/engines/btdb.py
+++ b/nova3/engines/btdb.py
@@ -1,6 +1,6 @@
-#VERSION: 1.03
-#AUTHORS: Charles Worthing
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 1.04
+# AUTHORS: Charles Worthing
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -27,10 +27,11 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 from html.parser import HTMLParser
-#qBt
+# qBt
 from novaprinter import prettyPrinter
 from helpers import download_file, retrieve_url
 
+
 class btdb(object):
     """ Search engine class """
     url = 'https://btdb.to'
@@ -46,9 +47,9 @@ class btdb(object):
             HTMLParser.__init__(self)
             self.results = results
             self.url = url
-            self.current_item = {} # One torrent result
+            self.current_item = {}  # One torrent result
             self.add_query = True
-            self.torrent_info_index = 0 # Count of the meta data encountered
+            self.torrent_info_index = 0  # Count of the meta data encountered
             self.torrent_info_array = []
             self.meta_data_grabbing = 0
             self.meta_data_array = []
@@ -85,15 +86,14 @@ class btdb(object):
                         if link.startswith("magnet:"):
                             self.magnet_link = link
 
-        def handle_endtag(self, tag): 
+        def handle_endtag(self, tag):
             if tag == "script":
                 return
             if tag == "div":
                 if self.meta_data_grabbing > 0:
-                    
-                    self.torrent_no_files = self.meta_data_array[2] # Not used
-                    self.torrent_date_added = self.meta_data_array[4] # Not used
-                    self.torrent_popularity = self.meta_data_array[6] # Not used
+                    self.torrent_no_files = self.meta_data_array[2]  # Not used
+                    self.torrent_date_added = self.meta_data_array[4]  # Not used
+                    self.torrent_popularity = self.meta_data_array[6]  # Not used
 
                     self.current_item["size"] = self.meta_data_array[0]
                     self.current_item["name"] = self.torrent_name
diff --git a/nova3/engines/eztv.py b/nova3/engines/eztv.py
index 05a8c8f..b352dde 100644
--- a/nova3/engines/eztv.py
+++ b/nova3/engines/eztv.py
@@ -1,6 +1,6 @@
-#VERSION: 1.00
-#AUTHORS: nindogo
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 1.01
+# AUTHORS: nindogo
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 try:
     # python3
@@ -13,6 +13,7 @@ except ImportError:
 from novaprinter import prettyPrinter
 from helpers import retrieve_url
 
+
 class eztv(object):
     name = "EZTV"
     url = 'https://eztv.ag'
@@ -32,26 +33,32 @@ class eztv(object):
         def handle_starttag(self, tag, attrs):
             params = dict(attrs)
 
-            if (params.get('class') == 'forum_header_border' and params.get('name') == 'hover'):
+            if (params.get('class') == 'forum_header_border'
+                    and params.get('name') == 'hover'):
                 self.in_table_row = True
                 self.current_item = {}
                 self.current_item['leech'] = -1
                 self.current_item['engine_url'] = self.url
 
-            if tag == self.A and self.in_table_row and params.get('class') == 'magnet':
+            if (tag == self.A
+                    and self.in_table_row and params.get('class') == 'magnet'):
                 self.current_item['link'] = params.get('href')
 
-            if tag == self.A and self.in_table_row and params.get('class') == 'epinfo':
+            if (tag == self.A
+                    and self.in_table_row and params.get('class') == 'epinfo'):
                 self.current_item['desc_link'] = self.url + params.get('href')
                 self.current_item['name'] = params.get('title').split(' (')[0]
 
-            if tag == self.TD and params.get('class') == 'forum_thread_post_end' and params.get('align') == 'center':
+            if (tag == self.TD
+                    and params.get('class') == 'forum_thread_post_end'
+                    and params.get('align') == 'center'):
                 prettyPrinter(self.current_item)
                 self.in_table_row = False
 
         def handle_data(self, data):
             data = data.replace(',', '')
-            if self.in_table_row and (data.endswith('MB') or data.endswith('GB') or data.endswith('KB')):
+            if (self.in_table_row
+                    and (data.endswith('MB') or data.endswith('GB') or data.endswith('KB'))):
                 self.current_item['size'] = data
 
             if self.in_table_row and (data.isalnum() or data == '-'):
@@ -65,13 +72,14 @@ class eztv(object):
                 self.in_table_row = False
 
     def search(self, what, cat='all'):
-        query = self.url + '/search/' + what.replace('%20','-')
+        query = self.url + '/search/' + what.replace('%20', '-')
         eztv_html = retrieve_url(query)
 
         eztv_parser = self.MyHtmlParser(self.url)
         eztv_parser.feed(eztv_html)
         eztv_parser.close()
 
+
 if __name__ == '__main__':
     eztv_se = eztv()
     eztv_se.search('Acre', 'all')
diff --git a/nova3/engines/legittorrents.py b/nova3/engines/legittorrents.py
index 16095c7..dae9bf7 100644
--- a/nova3/engines/legittorrents.py
+++ b/nova3/engines/legittorrents.py
@@ -1,6 +1,6 @@
-#VERSION: 2.02
-#AUTHORS: Christophe Dumez (chris@qbittorrent.org)
-#         Douman (custparasite@gmx.se)
+#VERSION: 2.03
+# AUTHORS: Christophe Dumez (chris@qbittorrent.org)
+#          Douman (custparasite@gmx.se)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -26,16 +26,18 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-
 from novaprinter import prettyPrinter
 from helpers import retrieve_url, download_file
 from html.parser import HTMLParser
 from re import compile as re_compile
 
+
 class legittorrents(object):
     url = 'http://www.legittorrents.info'
     name = 'Legit Torrents'
-    supported_categories = {'all': '0', 'movies': '1', 'tv': '13', 'music': '2', 'games': '3', 'anime': '5', 'books': '6'}
+    supported_categories = {'all': '0', 'movies': '1', 'tv': '13',
+                            'music': '2', 'games': '3', 'anime': '5',
+                            'books': '6'}
 
     def download_torrent(self, info):
         print(download_file(info))
@@ -55,13 +57,14 @@ class legittorrents(object):
                 if tag == "a":
                     link = params["href"]
                     if link.startswith("index") and "title" in params:
-                        #description link
+                        # description link
                         self.current_item["name"] = params["title"][14:]
                         self.current_item["desc_link"] = "/".join((self.url, link))
                     elif link.startswith("download"):
                         self.current_item["link"] = "/".join((self.url, link))
                 elif tag == "td":
-                    if "width" in params and params["width"] == "30" and not "leech" in self.current_item:
+                    if ("width" in params
+                            and params["width"] == "30" and "leech" not in self.current_item):
                         self.save_item_key = "leech" if "seeds" in self.current_item else "seeds"
 
             elif tag == "tr":
@@ -84,11 +87,12 @@ class legittorrents(object):
 
     def search(self, what, cat='all'):
         """ Performs search """
-        query = "".join((self.url, "/index.php?page=torrents&search=", what, "&category=", self.supported_categories.get(cat, '0'), "&active=1"))
+        query = "".join((self.url, "/index.php?page=torrents&search=", what, "&category=",
+                         self.supported_categories.get(cat, '0'), "&active=1"))
 
-        get_table = re_compile('(?s)<table\sclass="lista".*>(.*)</table>')
+        get_table = re_compile(r'(?s)<table\sclass="lista".*>(.*)</table>')
         data = get_table.search(retrieve_url(query)).group(0)
-        #extract first ten pages of next results
+        # extract first ten pages of next results
         next_pages = re_compile('(?m)<option value="(.*)">[0-9]+</option>')
         next_pages = ["".join((self.url, page)) for page in next_pages.findall(data)[:10]]
 
diff --git a/nova3/engines/piratebay.py b/nova3/engines/piratebay.py
index 3beab98..6b78254 100644
--- a/nova3/engines/piratebay.py
+++ b/nova3/engines/piratebay.py
@@ -1,8 +1,8 @@
-#VERSION: 2.15
-#AUTHORS: Fabien Devaux (fab@gnux.info)
-#CONTRIBUTORS: Christophe Dumez (chris@qbittorrent.org)
-#              Arthur (custparasite@gmx.se)
-#              Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 2.16
+# AUTHORS: Fabien Devaux (fab@gnux.info)
+# CONTRIBUTORS: Christophe Dumez (chris@qbittorrent.org)
+#               Arthur (custparasite@gmx.se)
+#               Diego de las Heras (ngosang@hotmail.es)
 
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -29,15 +29,17 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 from html.parser import HTMLParser
-#qBt
+# qBt
 from novaprinter import prettyPrinter
 from helpers import download_file, retrieve_url
 
+
 class piratebay(object):
     """ Search engine class """
     url = 'https://thepiratebay.org'
     name = 'The Pirate Bay'
-    supported_categories = {'all': '0', 'music': '100', 'movies': '200', 'games': '400', 'software': '300'}
+    supported_categories = {'all': '0', 'music': '100', 'movies': '200',
+                            'games': '400', 'software': '300'}
 
     def download_torrent(self, info):
         """ Downloader """
@@ -51,7 +53,7 @@ class piratebay(object):
             self.url = url
             self.current_item = None
             self.save_item = None
-            self.result_table = False #table with results is found
+            self.result_table = False  # table with results is found
             self.result_tbody = False
             self.add_query = True
             self.result_query = False
@@ -93,12 +95,14 @@ class piratebay(object):
         def handle_starttag(self, tag, attrs):
             """ Parser's start tag handler """
             if self.current_item:
-                dispatcher = getattr(self, "_".join(("handle_start_tag", tag)), self.handle_start_tag_default)
+                dispatcher = getattr(self,
+                                     "_".join(("handle_start_tag", tag)),
+                                     self.handle_start_tag_default)
                 dispatcher(attrs)
 
             elif self.result_tbody:
                 if tag == "tr":
-                    self.current_item = {"engine_url" : self.url}
+                    self.current_item = {"engine_url": self.url}
 
             elif tag == "table":
                 self.result_table = "searchResult" == attrs[0][1]
@@ -141,7 +145,8 @@ class piratebay(object):
                     temp_data = data.split()
                     if "Size" in temp_data:
                         indx = temp_data.index("Size")
-                        self.current_item[self.save_item] = temp_data[indx + 1] + " " + temp_data[indx + 2]
+                        self.current_item[self.save_item] = (temp_data[indx + 1] + " "
+                                                             + temp_data[indx + 2])
 
                 elif self.save_item == "name":
                     # names with special characters like '&' are splitted in several pieces
@@ -153,10 +158,9 @@ class piratebay(object):
                     self.current_item[self.save_item] = data
                     self.save_item = None
 
-
     def search(self, what, cat='all'):
         """ Performs search """
-        #prepare query. 7 is filtering by seeders
+        # prepare query. 7 is filtering by seeders
         cat = cat.lower()
         query = "/".join((self.url, "search", what, "0", "7", self.supported_categories[cat]))
 
diff --git a/nova3/engines/torlock.py b/nova3/engines/torlock.py
index a1afbf1..6e68bdd 100644
--- a/nova3/engines/torlock.py
+++ b/nova3/engines/torlock.py
@@ -1,23 +1,24 @@
-#VERSION: 2.0
-#AUTHORS: Douman (custparasite@gmx.se)
-#CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
+#VERSION: 2.1
+# AUTHORS: Douman (custparasite@gmx.se)
+# CONTRIBUTORS: Diego de las Heras (ngosang@hotmail.es)
 
 from novaprinter import prettyPrinter
 from helpers import retrieve_url, download_file
 from re import compile as re_compile
 from html.parser import HTMLParser
 
+
 class torlock(object):
     url = "https://www.torlock.com"
     name = "TorLock"
-    supported_categories = {'all'      : 'all',
-                            'anime'    : 'anime',
-                            'software' : 'software',
-                            'games'    : 'game',
-                            'movies'   : 'movie',
-                            'music'    : 'music',
-                            'tv'       : 'television',
-                            'books'    : 'ebooks'}
+    supported_categories = {'all': 'all',
+                            'anime': 'anime',
+                            'software': 'software',
+                            'games': 'game',
+                            'movies': 'movie',
+                            'music': 'music',
+                            'tv': 'television',
+                            'books': 'ebooks'}
 
     def download_torrent(self, info):
         print(download_file(info))
@@ -27,14 +28,14 @@ class torlock(object):
         def __init__(self, url):
             HTMLParser.__init__(self)
             self.url = url
-            self.article_found = False #true when <article> with results is found
+            self.article_found = False  # true when <article> with results is found
             self.item_found = False
-            self.item_bad = False #set to True for malicious links
-            self.current_item = None #dict for found item
-            self.item_name = None #key's name in current_item dict
-            self.parser_class = {"ts"  : "size",
-                                 "tul" : "seeds",
-                                 "tdl" : "leech"}
+            self.item_bad = False  # set to True for malicious links
+            self.current_item = None  # dict for found item
+            self.item_name = None  # key's name in current_item dict
+            self.parser_class = {"ts": "size",
+                                 "tul": "seeds",
+                                 "tdl": "leech"}
 
         def handle_starttag(self, tag, attrs):
             params = dict(attrs)
@@ -50,7 +51,8 @@ class torlock(object):
                     link = params["href"]
                     if link.startswith("/torrent"):
                         self.current_item["desc_link"] = "".join((self.url, link))
-                        self.current_item["link"] = "".join((self.url, "/tor/", link.split('/')[2], ".torrent"))
+                        self.current_item["link"] = "".join((self.url, "/tor/",
+                                                             link.split('/')[2], ".torrent"))
                         self.current_item["engine_url"] = self.url
                         self.item_found = True
                         self.item_name = "name"
@@ -81,13 +83,15 @@ class torlock(object):
         query = query.replace("%20", "-")
 
         parser = self.MyHtmlParser(self.url)
-        page = "".join((self.url, "/", self.supported_categories[cat], "/torrents/", query, ".html?sort=seeds&page=1"))
+        page = "".join((self.url, "/", self.supported_categories[cat],
+                        "/torrents/", query, ".html?sort=seeds&page=1"))
         html = retrieve_url(page)
         parser.feed(html)
 
         counter = 1
-        additional_pages = re_compile("/{0}/torrents/{1}.html\?sort=seeds&page=[0-9]+".format(self.supported_categories[cat], query))
-        list_searches = additional_pages.findall(html)[:-1] #last link is next(i.e. second)
+        additional_pages = re_compile(r"/{0}/torrents/{1}.html\?sort=seeds&page=[0-9]+"
+                                      .format(self.supported_categories[cat], query))
+        list_searches = additional_pages.findall(html)[:-1]  # last link is next(i.e. second)
         for page in map(lambda link: "".join((self.url, link)), list_searches):
             html = retrieve_url(page)
             parser.feed(html)
diff --git a/nova3/engines/versions.txt b/nova3/engines/versions.txt
index 13233ec..934ecd6 100644
--- a/nova3/engines/versions.txt
+++ b/nova3/engines/versions.txt
@@ -1,6 +1,6 @@
-btdb: 1.03
-eztv: 1.00
-legittorrents: 2.02
-piratebay: 2.15
-torlock: 2.0
-zooqle: 1.12
+btdb: 1.04
+eztv: 1.01
+legittorrents: 2.03
+piratebay: 2.16
+torlock: 2.1
+zooqle: 1.13
diff --git a/nova3/engines/zooqle.py b/nova3/engines/zooqle.py
index 6e5f7f9..39a32ad 100644
--- a/nova3/engines/zooqle.py
+++ b/nova3/engines/zooqle.py
@@ -1,6 +1,6 @@
-#VERSION: 1.12
-#AUTHORS: Kanishk Singh (https://github.com/ArionMiles/)
-#CONTRIBUTORS: affaff (https://github.com/affaff)
+#VERSION: 1.13
+# AUTHORS: Kanishk Singh (https://github.com/ArionMiles/)
+# CONTRIBUTORS: affaff (https://github.com/affaff)
 
 # Copyright (c) 2017 Kanishk Singh
 
@@ -25,11 +25,12 @@
 
 from xml.dom import minidom
 from novaprinter import prettyPrinter
-user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
-headers    = {'User-Agent': user_agent}
-
 from io import StringIO
 import gzip
+
+user_agent = 'Mozilla/5.0 (X11; Linux i686; rv:38.0) Gecko/20100101 Firefox/38.0'
+headers = {'User-Agent': user_agent}
+
 try:
     from urllib2 import urlopen, Request, URLError
 except ImportError:
@@ -38,7 +39,7 @@ except ImportError:
 
 def retrieve_url_nodecode(url):
     """ Return the content of the url page as a string """
-    req = Request(url, headers = headers)
+    req = Request(url, headers=headers)
     try:
         response = urlopen(req)
     except URLError as errno:
@@ -56,50 +57,63 @@ def retrieve_url_nodecode(url):
         return dat
     return dat
 
+
 class zooqle(object):
     """ Search engine class """
     url = 'https://zooqle.com'
     name = 'Zooqle'
-    supported_categories = {'all'       : 'all',
-                            'movies'    : 'Movies',
-                            'tv'        : 'TV',
-                            'music'     : 'Music',
-                            'games'     : 'Games',
-                            'anime'     : 'Anime',
-                            'software'  : 'Apps',
-                            'books'     : 'Books'}
+    supported_categories = {'all': 'all',
+                            'movies': 'Movies',
+                            'tv': 'TV',
+                            'music': 'Music',
+                            'games': 'Games',
+                            'anime': 'Anime',
+                            'software': 'Apps',
+                            'books': 'Books'}
+
     def search(self, what, cat="all"):
         """ Performs search """
         page = 1
         while page < 11:
-            query = "".join((self.url, "/search?q=", what, "+category%3A", self.supported_categories[cat], "&fmt=rss"))
-            if( page>1 ):
-                query = query + "&pg=" + str (page)
+            query = "".join((self.url, "/search?q=", what,
+                             "+category%3A", self.supported_categories[cat], "&fmt=rss"))
+            if page > 1:
+                query = query + "&pg=" + str(page)
             response = retrieve_url_nodecode(query)
             xmldoc = minidom.parseString(response)
             itemlist = xmldoc.getElementsByTagName('item')
-            if( len(itemlist ) ==0):
+            if len(itemlist) == 0:
                 return
             for item in itemlist:
-                zooqle_dict = zooqle_dict = {"engine_url" : self.url}
-                zooqle_dict['name'] = item.getElementsByTagName('title')[0].childNodes[0].data
-                zooqle_dict["size"] = item.getElementsByTagName('enclosure')[0].attributes['length'].childNodes[0].data
-                if( zooqle_dict["size"]=='0'):
-                    zooqle_dict["link"] = item.getElementsByTagName('torrent:magnetURI')[0].childNodes[0].data
+                zooqle_dict = zooqle_dict = {"engine_url": self.url}
+                zooqle_dict['name'] = (item.getElementsByTagName('title')[0]
+                                       .childNodes[0].data)
+                zooqle_dict["size"] = (item.getElementsByTagName('enclosure')[0]
+                                       .attributes['length'].childNodes[0].data)
+                if zooqle_dict["size"] == '0':
+                    zooqle_dict["link"] = (item.getElementsByTagName('torrent:magnetURI')[0]
+                                           .childNodes[0].data)
                 else:
-                    zooqle_dict["link"] = item.getElementsByTagName('enclosure')[0].attributes['url'].value
-                zooqle_dict["desc_link"] = item.getElementsByTagName('link')[0].childNodes[0].data
-                zooqle_dict["leech"] = item.getElementsByTagName('torrent:peers')[0].childNodes[0].data
+                    zooqle_dict["link"] = (item.getElementsByTagName('enclosure')[0]
+                                           .attributes['url'].value)
+                zooqle_dict["desc_link"] = (item.getElementsByTagName('link')[0]
+                                            .childNodes[0].data)
+                zooqle_dict["leech"] = (item.getElementsByTagName('torrent:peers')[0]
+                                        .childNodes[0].data)
                 if not zooqle_dict["leech"].isdigit():
                     zooqle_dict["leech"] = ''
-                zooqle_dict["seeds"] = item.getElementsByTagName('torrent:seeds')[0].childNodes[0].data
+                zooqle_dict["seeds"] = (item.getElementsByTagName('torrent:seeds')[0]
+                                        .childNodes[0].data)
                 if not zooqle_dict["seeds"].isdigit():
                     zooqle_dict["seeds"] = ''
                 prettyPrinter(zooqle_dict)
-            totalResultVal  = xmldoc.getElementsByTagName('opensearch:totalResults')[0].childNodes[0].data
-            startIndex  = xmldoc.getElementsByTagName('opensearch:startIndex')[0].childNodes[0].data
-            itemsPerPage = xmldoc.getElementsByTagName('opensearch:itemsPerPage')[0].childNodes[0].data
-            if( ( int(startIndex)  + int(itemsPerPage) > int( totalResultVal ))):
+            totalResultVal = (xmldoc.getElementsByTagName('opensearch:totalResults')[0]
+                                    .childNodes[0].data)
+            startIndex = (xmldoc.getElementsByTagName('opensearch:startIndex')[0]
+                                .childNodes[0].data)
+            itemsPerPage = (xmldoc.getElementsByTagName('opensearch:itemsPerPage')[0]
+                                  .childNodes[0].data)
+            if (int(startIndex) + int(itemsPerPage)) > int(totalResultVal):
                 return
             page += 1
         return