diff --git a/src/controller/buffers/twitterBuffers.py b/src/controller/buffers/twitterBuffers.py
index 5b9701c0..4450d996 100644
--- a/src/controller/buffers/twitterBuffers.py
+++ b/src/controller/buffers/twitterBuffers.py
@@ -128,7 +128,7 @@ class baseBufferController(baseBuffers.buffer):
   tweetsList = []
   tweet_id = tweet["id"]
   message = None
-  if tweet.has_key("message"):
+  if "message" in tweet:
    message = tweet["message"]
   try:
    tweet = self.session.twitter.show_status(id=tweet_id, include_ext_alt_text=True, tweet_mode="extended")
@@ -241,7 +241,7 @@ class baseBufferController(baseBuffers.buffer):
     if self.name[:-9] in self.session.settings["other_buffers"]["timelines"]:
      self.session.settings["other_buffers"]["timelines"].remove(self.name[:-9])
      self.session.settings.write()
-     if self.session.db.has_key(self.name):
+     if self.name in self.session.db:
       self.session.db.pop(self.name)
      return True
    elif dlg == widgetUtils.NO:
@@ -254,7 +254,7 @@ class baseBufferController(baseBuffers.buffer):
    if dlg == widgetUtils.YES:
     if self.name[:-9] in self.session.settings["other_buffers"]["favourites_timelines"]:
      self.session.settings["other_buffers"]["favourites_timelines"].remove(self.name[:-9])
-     if self.session.db.has_key(self.name):
+     if self.name in self.session.db:
       self.session.db.pop(self.name)
      self.session.settings.write()
      return True
@@ -377,7 +377,7 @@ class baseBufferController(baseBuffers.buffer):
    self.show_menu(widgetUtils.MENU, pos=self.buffer.list.list.GetPosition())
 
  def get_tweet(self):
-  if self.session.db[self.name][self.buffer.list.get_selected()].has_key("retweeted_status"):
+  if "retweeted_status" in self.session.db[self.name][self.buffer.list.get_selected()]:
    tweet = self.session.db[self.name][self.buffer.list.get_selected()]["retweeted_status"]
   else:
    tweet = self.session.db[self.name][self.buffer.list.get_selected()]
@@ -392,7 +392,7 @@ class baseBufferController(baseBuffers.buffer):
   tweet = self.get_right_tweet()
   screen_name = tweet["user"]["screen_name"]
   id = tweet["id"]
-  twishort_enabled = tweet.has_key("twishort")
+  twishort_enabled = "twishort" in tweet
   users = utils.get_all_mentioned(tweet, self.session.db, field="screen_name")
   ids = utils.get_all_mentioned(tweet, self.session.db, field="id_str")
   # Build the window title
@@ -489,9 +489,9 @@ class baseBufferController(baseBuffers.buffer):
 
  def _retweet_with_comment(self, tweet, id, comment=''):
   # If quoting a retweet, let's quote the original tweet instead the retweet.
-  if tweet.has_key("retweeted_status"):
+  if "retweeted_status" in tweet:
    tweet = tweet["retweeted_status"]
-  if tweet.has_key("full_text"):
+  if "full_text" in tweet:
    comments = tweet["full_text"]
   else:
    comments = tweet["text"]
@@ -723,7 +723,7 @@ class sentDirectMessagesController(directMessagesController):
 
  def __init__(self, *args, **kwargs):
   super(sentDirectMessagesController, self).__init__(*args, **kwargs)
-  if self.session.db.has_key("sent_direct_messages") == False:
+  if ("sent_direct_messages" in self.session.db) == False:
    self.session.db["sent_direct_messages"] = {"items": []}
 
  def get_more_items(self):
@@ -770,7 +770,7 @@ class listBufferController(baseBufferController):
   if dlg == widgetUtils.YES:
    if self.name[:-5] in self.session.settings["other_buffers"]["lists"]:
     self.session.settings["other_buffers"]["lists"].remove(self.name[:-5])
-    if self.session.db.has_key(self.name):
+    if self.name in self.session.db:
      self.session.db.pop(self.name)
     self.session.settings.write()
     return True
@@ -805,7 +805,7 @@ class peopleBufferController(baseBufferController):
    if dlg == widgetUtils.YES:
     if self.name[:-10] in self.session.settings["other_buffers"]["followers_timelines"]:
      self.session.settings["other_buffers"]["followers_timelines"].remove(self.name[:-10])
-     if self.session.db.has_key(self.name):
+     if self.name in self.session.db:
       self.session.db.pop(self.name)
      self.session.settings.write()
      return True
@@ -819,7 +819,7 @@ class peopleBufferController(baseBufferController):
    if dlg == widgetUtils.YES:
     if self.name[:-8] in self.session.settings["other_buffers"]["friends_timelines"]:
      self.session.settings["other_buffers"]["friends_timelines"].remove(self.name[:-8])
-     if self.session.db.has_key(self.name):
+     if self.name in self.session.db:
       self.session.db.pop(self.name)
      self.session.settings.write()
      return True
@@ -1000,7 +1000,7 @@ class searchBufferController(baseBufferController):
    if self.name[:-11] in self.session.settings["other_buffers"]["tweet_searches"]:
     self.session.settings["other_buffers"]["tweet_searches"].remove(self.name[:-11])
     self.session.settings.write()
-    if self.session.db.has_key(self.name):
+    if self.name in self.session.db:
      self.session.db.pop(self.name)
     return True
   elif dlg == widgetUtils.NO:
@@ -1051,7 +1051,7 @@ class searchPeopleBufferController(peopleBufferController):
   self.args = args
   self.kwargs = kwargs
   self.function = function
-  if self.kwargs.has_key("page") == False:
+  if ("page" in self.kwargs) == False:
    self.kwargs["page"] = 1
 
  def start_stream(self, mandatory=False, play_sound=True, avoid_autoreading=True):
@@ -1115,7 +1115,7 @@ class searchPeopleBufferController(peopleBufferController):
    if self.name[:-11] in self.session.settings["other_buffers"]["tweet_searches"]:
     self.session.settings["other_buffers"]["tweet_searches"].remove(self.name[:-11])
     self.session.settings.write()
-    if self.session.db.has_key(self.name):
+    if self.name in self.session.db:
      self.session.db.pop(self.name)
     return True
   elif dlg == widgetUtils.NO:
@@ -1188,7 +1188,7 @@ class trendsBufferController(baseBuffers.buffer):
    if self.name[:-3] in self.session.settings["other_buffers"]["trending_topic_buffers"]:
     self.session.settings["other_buffers"]["trending_topic_buffers"].remove(self.name[:-3])
     self.session.settings.write()
-    if self.session.db.has_key(self.name):
+    if self.name in self.session.db:
      self.session.db.pop(self.name)
     return True
   elif dlg == widgetUtils.NO:
@@ -1288,7 +1288,7 @@ class conversationBufferController(searchBufferController):
   else:
    dlg = widgetUtils.YES
   if dlg == widgetUtils.YES:
-   if self.session.db.has_key(self.name):
+   if self.name in self.session.db:
     self.session.db.pop(self.name)
    return True
   elif dlg == widgetUtils.NO:
diff --git a/src/controller/filterController.py b/src/controller/filterController.py
index 1ed1487a..1ece0bf9 100644
--- a/src/controller/filterController.py
+++ b/src/controller/filterController.py
@@ -30,7 +30,7 @@ class filter(object):
     if i["name"] in langs:
      langcodes.append(i["code"])
    d = dict(in_buffer=self.buffer.name, word=term, regexp=regexp, in_lang=lang_option, languages=langcodes, if_word_exists=contains, allow_rts=allow_rts, allow_quotes=allow_quotes, allow_replies=allow_replies)
-   if self.buffer.session.settings["filters"].has_key(title):
+   if title in self.buffer.session.settings["filters"]:
     return commonMessageDialogs.existing_filter()
    self.buffer.session.settings["filters"][title] = d
    self.buffer.session.settings.write()
diff --git a/src/controller/mainController.py b/src/controller/mainController.py
index 74728c43..11b6b27e 100644
--- a/src/controller/mainController.py
+++ b/src/controller/mainController.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import platform
 system = platform.system()
 import application
@@ -8,15 +9,15 @@ import arrow
 if system == "Windows":
  from update import updater
  from wxUI import (view, dialogs, commonMessageDialogs, sysTrayIcon)
- import settings
+ from . import settings
  from extra import SoundsTutorial, ocr
  import keystrokeEditor
  from keyboard_handler.wx_handler import WXKeyboardHandler
- import userActionsController
- import trendingTopics
- import user
- import listsController
- import filterController
+ from . import userActionsController
+ from . import trendingTopics
+ from . import user
+ from . import listsController
+ from . import filterController
 # from issueReporter import issueReporter
 elif system == "Linux":
  from gtkUI import (view, commonMessageDialogs)
@@ -24,7 +25,7 @@ from sessions.twitter import utils, compose
 from sessionmanager import manager, sessionManager
 
 from controller.buffers import baseBuffers, twitterBuffers
-import messages
+from . import messages
 import sessions
 from sessions.twitter  import session as session_
 from pubsub import pub
@@ -392,7 +393,7 @@ class Controller(object):
  def set_buffer_positions(self, session):
   "Sets positions for buffers if values exist in the database."
   for i in self.buffers:
-   if i.account == session.db["user_name"] and session.db.has_key(i.name+"_pos") and hasattr(i.buffer,'list'):
+   if i.account == session.db["user_name"] and i.name+"_pos" in session.db and hasattr(i.buffer,'list'):
     i.buffer.list.select_item(session.db[str(i.name+"_pos")])
 
  def logout_account(self, session_id):
@@ -1563,7 +1564,7 @@ class Controller(object):
    output.speak(_(u"Invalid buffer"))
    return
   tweet = buffer.get_tweet()
-  if tweet.has_key("entities") == False or tweet["entities"].has_key("media") == False:
+  if ("entities" in tweet) == False or ("media" in tweet["entities"]) == False:
    output.speak(_(u"This tweet doesn't contain images"))
    return
   if len(tweet["entities"]["media"]) > 1:
diff --git a/src/controller/messages.py b/src/controller/messages.py
index d423764f..8668e6cd 100644
--- a/src/controller/messages.py
+++ b/src/controller/messages.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import re
 import platform
-import attach
+from . import attach
 import arrow
 import languageHandler
 system = platform.system()
@@ -206,25 +207,25 @@ class viewTweet(basicTweet):
    text = ""
    for i in xrange(0, len(tweetList)):
     # tweets with message keys are longer tweets, the message value is the full messaje taken from twishort.
-    if tweetList[i].has_key("message") and tweetList[i]["is_quote_status"] == False:
+    if "message" in tweetList[i] and tweetList[i]["is_quote_status"] == False:
      value = "message"
     else:
      value = "full_text"
-    if tweetList[i].has_key("retweeted_status") and tweetList[i]["is_quote_status"] == False:
-     if tweetList[i].has_key("message") == False:
+    if "retweeted_status" in tweetList[i] and tweetList[i]["is_quote_status"] == False:
+     if ("message" in tweetList[i]) == False:
       text = text + "rt @%s: %s\n" % (tweetList[i]["retweeted_status"]["user"]["screen_name"], tweetList[i]["retweeted_status"]["full_text"])
      else:
       text = text + "rt @%s: %s\n" % (tweetList[i]["retweeted_status"]["user"]["screen_name"], tweetList[i][value])
     else:
      text = text + " @%s: %s\n" % (tweetList[i]["user"]["screen_name"], tweetList[i][value])
     # tweets with extended_entities could include image descriptions.
-    if tweetList[i].has_key("extended_entities") and tweetList[i]["extended_entities"].has_key("media"):
+    if "extended_entities" in tweetList[i] and "media" in tweetList[i]["extended_entities"]:
      for z in tweetList[i]["extended_entities"]["media"]:
-      if z.has_key("ext_alt_text") and z["ext_alt_text"] != None:
+      if "ext_alt_text" in z and z["ext_alt_text"] != None:
        image_description.append(z["ext_alt_text"])
-    if tweetList[i].has_key("retweeted_status") and tweetList[i]["retweeted_status"].has_key("extended_entities") and tweetList[i]["retweeted_status"]["extended_entities"].has_key("media"):
+    if "retweeted_status" in tweetList[i] and "extended_entities" in tweetList[i]["retweeted_status"] and "media" in tweetList[i]["retweeted_status"]["extended_entities"]:
      for z in tweetList[i]["retweeted_status"]["extended_entities"]["media"]:
-      if z.has_key("ext_alt_text") and z["ext_alt_text"] != None:
+      if "ext_alt_text" in z and z["ext_alt_text"] != None:
        image_description.append(z["ext_alt_text"])
    # set rt and likes counters.
    rt_count = str(tweet["retweet_count"])
@@ -234,25 +235,25 @@ class viewTweet(basicTweet):
    original_date = arrow.get(tweet["created_at"], "ddd MMM DD H:m:s Z YYYY", locale="en")
    date = original_date.replace(seconds=utc_offset).format(_(u"MMM D, YYYY. H:m"), locale=languageHandler.getLanguage())
    if text == "":
-    if tweet.has_key("message"):
+    if "message" in tweet:
      value = "message"
     else:
      value = "full_text"
-    if tweet.has_key("retweeted_status"):
-     if tweet.has_key("message") == False:
+    if "retweeted_status" in tweet:
+     if ("message" in tweet) == False:
       text = "rt @%s: %s" % (tweet["retweeted_status"]["user"]["screen_name"], tweet["retweeted_status"]["full_text"])
      else:
       text = "rt @%s: %s" % (tweet["retweeted_status"]["user"]["screen_name"], tweet[value])
     else:
      text = tweet[value]
    text = self.clear_text(text)
-   if tweet.has_key("extended_entities") and tweet["extended_entities"].has_key("media"):
+   if "extended_entities" in tweet and "media" in tweet["extended_entities"]:
     for z in tweet["extended_entities"]["media"]:
-     if z.has_key("ext_alt_text") and z["ext_alt_text"] != None:
+     if "ext_alt_text" in z and z["ext_alt_text"] != None:
       image_description.append(z["ext_alt_text"])
-   if tweet.has_key("retweeted_status") and tweet["retweeted_status"].has_key("extended_entities") and tweet["retweeted_status"]["extended_entities"].has_key("media"):
+   if "retweeted_status" in tweet and "extended_entities" in tweet["retweeted_status"] and "media" in tweet["retweeted_status"]["extended_entities"]:
     for z in tweet["retweeted_status"]["extended_entities"]["media"]:
-     if z.has_key("ext_alt_text") and z["ext_alt_text"] != None:
+     if "ext_alt_text" in z and z["ext_alt_text"] != None:
       image_description.append(z["ext_alt_text"])
    self.message = message.viewTweet(text, rt_count, favs_count, source.decode("utf-8"), date)
    self.message.set_title(len(text))
diff --git a/src/controller/userActionsController.py b/src/controller/userActionsController.py
index 1d0cc788..f3f40ded 100644
--- a/src/controller/userActionsController.py
+++ b/src/controller/userActionsController.py
@@ -71,7 +71,7 @@ class userActionsController(object):
 
  def ignore_client(self, user):
   tweet = self.buffer.get_right_tweet()
-  if tweet.has_key("sender"):
+  if "sender" in tweet:
    output.speak(_(u"You can't ignore direct messages"))
    return
   client = re.sub(r"(?s)<.*?>", "", tweet["source"])
diff --git a/src/extra/AudioUploader/audioUploader.py b/src/extra/AudioUploader/audioUploader.py
index afc0fee1..824c64c4 100644
--- a/src/extra/AudioUploader/audioUploader.py
+++ b/src/extra/AudioUploader/audioUploader.py
@@ -16,10 +16,11 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ############################################################
+from __future__ import absolute_import
 import widgetUtils
-import wx_ui
-import wx_transfer_dialogs
-import transfer
+from . import wx_ui
+from . import wx_transfer_dialogs
+from . import transfer
 import output
 import tempfile
 import sound
diff --git a/src/extra/AudioUploader/transfer.py b/src/extra/AudioUploader/transfer.py
index c8b9827b..d5671977 100644
--- a/src/extra/AudioUploader/transfer.py
+++ b/src/extra/AudioUploader/transfer.py
@@ -1,9 +1,10 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import sys
 import threading
 import time
 import logging
-from utils import convert_bytes
+from .utils import convert_bytes
 from pubsub import pub
 log = logging.getLogger("extra.AudioUploader.transfer")
 from requests_toolbelt.multipart.encoder import MultipartEncoder, MultipartEncoderMonitor
@@ -75,9 +76,9 @@ class Upload(object):
    data = self.response.json()
   except:
    return _("Error in file upload: {0}").format(self.data.content,)
-  if data.has_key("url") and data["url"] != "0":
+  if "url" in data and data["url"] != "0":
    return data["url"]
-  elif data.has_key("error") and data["error"] != "0":
+  elif "error" in data and data["error"] != "0":
    return data["error"]
   else:
    return _("Error in file upload: {0}").format(self.data.content,)
\ No newline at end of file
diff --git a/src/extra/AudioUploader/wx_transfer_dialogs.py b/src/extra/AudioUploader/wx_transfer_dialogs.py
index c209ad5e..c3fc01fa 100644
--- a/src/extra/AudioUploader/wx_transfer_dialogs.py
+++ b/src/extra/AudioUploader/wx_transfer_dialogs.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from utils import *
+from .utils import *
 import widgetUtils
 
 class UploadDialog(widgetUtils.BaseDialog):
diff --git a/src/extra/SoundsTutorial/__init__.py b/src/extra/SoundsTutorial/__init__.py
index 1e2e7e17..20d563a6 100644
--- a/src/extra/SoundsTutorial/__init__.py
+++ b/src/extra/SoundsTutorial/__init__.py
@@ -1 +1,2 @@
-from soundsTutorial import soundsTutorial
+from __future__ import absolute_import
+from .soundsTutorial import soundsTutorial
diff --git a/src/extra/SoundsTutorial/soundsTutorial.py b/src/extra/SoundsTutorial/soundsTutorial.py
index 37d9643a..fd835410 100644
--- a/src/extra/SoundsTutorial/soundsTutorial.py
+++ b/src/extra/SoundsTutorial/soundsTutorial.py
@@ -1,15 +1,16 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import platform
 import widgetUtils
 import os
 import paths
 import logging
 log = logging.getLogger("extra.SoundsTutorial.soundsTutorial")
-import soundsTutorial_constants
+from . import soundsTutorial_constants
 if platform.system() == "Windows":
- import wx_ui as UI
+ from . import wx_ui as UI
 elif platform.system() == "Linux":
- import gtk_ui as UI
+ from . import gtk_ui as UI
 
 class soundsTutorial(object):
  def __init__(self, sessionObject):
diff --git a/src/extra/SoundsTutorial/soundsTutorial_constants.py b/src/extra/SoundsTutorial/soundsTutorial_constants.py
index ae7cfe63..667e2373 100644
--- a/src/extra/SoundsTutorial/soundsTutorial_constants.py
+++ b/src/extra/SoundsTutorial/soundsTutorial_constants.py
@@ -1,5 +1,7 @@
 #-*- coding: utf-8 -*-
-import reverse_sort
+from __future__ import absolute_import
+#-*- coding: utf-8 -*-
+from . import reverse_sort
 import application
 actions = reverse_sort.reverse_sort([  ("audio", _(u"Audio tweet.")),
   ("create_timeline", _(u"User timeline buffer created.")),
diff --git a/src/extra/SpellChecker/__init__.py b/src/extra/SpellChecker/__init__.py
index fedad8a8..4edff483 100644
--- a/src/extra/SpellChecker/__init__.py
+++ b/src/extra/SpellChecker/__init__.py
@@ -1,4 +1,5 @@
-import spellchecker
+from __future__ import absolute_import
+from . import spellchecker
 import platform
 if platform.system() == "Windows":
- from wx_ui import *
\ No newline at end of file
+ from .wx_ui import *
\ No newline at end of file
diff --git a/src/extra/SpellChecker/spellchecker.py b/src/extra/SpellChecker/spellchecker.py
index a40102b5..cb3ce50d 100644
--- a/src/extra/SpellChecker/spellchecker.py
+++ b/src/extra/SpellChecker/spellchecker.py
@@ -1,14 +1,15 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import os
 import logging
-import wx_ui
+from . import wx_ui
 import widgetUtils
 import output
 import config
 import languageHandler
 import enchant
 import paths
-import twitterFilter
+from . import twitterFilter
 from enchant.checker import SpellChecker
 from enchant.errors import DictNotFoundError
 from enchant import tokenize
@@ -52,7 +53,7 @@ class spellChecker(object):
 
  def check(self):
   try:
-   self.checker.next()
+   next(self.checker)
    textToSay = _(u"Misspelled word: %s") % (self.checker.word,)
    context = u"... %s %s %s" % (self.checker.leading_context(10), self.checker.word, self.checker.trailing_context(10))
    self.dialog.set_title(textToSay)
diff --git a/src/extra/autocompletionUsers/__init__.py b/src/extra/autocompletionUsers/__init__.py
index 343ea6c0..888d9511 100644
--- a/src/extra/autocompletionUsers/__init__.py
+++ b/src/extra/autocompletionUsers/__init__.py
@@ -1,2 +1,4 @@
 # -*- coding: utf-8 -*-
-import completion, settings
\ No newline at end of file
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import completion, settings
\ No newline at end of file
diff --git a/src/extra/autocompletionUsers/completion.py b/src/extra/autocompletionUsers/completion.py
index f9c9a516..7dedc525 100644
--- a/src/extra/autocompletionUsers/completion.py
+++ b/src/extra/autocompletionUsers/completion.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import output
-import storage
-import wx_menu
+from . import storage
+from . import wx_menu
 
 class autocompletionUsers(object):
  def __init__(self, window, session_id):
diff --git a/src/extra/autocompletionUsers/manage.py b/src/extra/autocompletionUsers/manage.py
index 60e34ddc..a42ef607 100644
--- a/src/extra/autocompletionUsers/manage.py
+++ b/src/extra/autocompletionUsers/manage.py
@@ -1,7 +1,9 @@
 # -*- coding: utf-8 -*-
-import storage
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import storage
 import widgetUtils
-import wx_manage
+from . import wx_manage
 from wxUI import commonMessageDialogs
 
 class autocompletionManage(object):
diff --git a/src/extra/autocompletionUsers/settings.py b/src/extra/autocompletionUsers/settings.py
index 6eb0762d..5b682850 100644
--- a/src/extra/autocompletionUsers/settings.py
+++ b/src/extra/autocompletionUsers/settings.py
@@ -1,8 +1,10 @@
 # -*- coding: utf-8 -*-
-import storage
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import storage
 import widgetUtils
-import wx_settings
-import manage
+from . import wx_settings
+from . import manage
 import output
 from mysc.thread_utils import call_threaded
 
diff --git a/src/extra/ocr/__init__.py b/src/extra/ocr/__init__.py
index d127ddeb..b39f07d2 100644
--- a/src/extra/ocr/__init__.py
+++ b/src/extra/ocr/__init__.py
@@ -1,2 +1,4 @@
 # -*- coding: utf-8 -*-
-import OCRSpace
\ No newline at end of file
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import OCRSpace
\ No newline at end of file
diff --git a/src/extra/translator/__init__.py b/src/extra/translator/__init__.py
index be356d51..9296eede 100644
--- a/src/extra/translator/__init__.py
+++ b/src/extra/translator/__init__.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
-import translator
+from __future__ import absolute_import
+from . import translator
 import platform
 if platform.system() == "Windows":
- import wx_ui as gui
+ from . import wx_ui as gui
  
\ No newline at end of file
diff --git a/src/extra/translator/wx_ui.py b/src/extra/translator/wx_ui.py
index a61c9e7e..43b1c684 100644
--- a/src/extra/translator/wx_ui.py
+++ b/src/extra/translator/wx_ui.py
@@ -16,7 +16,26 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ############################################################
-import translator
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+############################################################
+#    Copyright (c) 2013, 2014 Manuel Eduardo Cortéz Vallejo <manuel@manuelcortez.net>
+#       
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+############################################################
+from . import translator
 import wx
 from wxUI.dialogs import baseDialog
 
diff --git a/src/fixes/__init__.py b/src/fixes/__init__.py
index 354a5875..c14e4d6d 100644
--- a/src/fixes/__init__.py
+++ b/src/fixes/__init__.py
@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 """ This module contains some bugfixes for packages used in TWBlue."""
+from __future__ import absolute_import
 import sys
-import fix_arrow # A few new locales for Three languages in arrow.
-import fix_urllib3_warnings # Avoiding some SSL warnings related to Twython.
-import fix_win32com
-import fix_requests #fix cacert.pem location for TWBlue binary copies
+from . import fix_arrow # A few new locales for Three languages in arrow.
+from . import fix_urllib3_warnings # Avoiding some SSL warnings related to Twython.
+from . import fix_win32com
+from . import fix_requests #fix cacert.pem location for TWBlue binary copies
 def setup():
 	fix_arrow.fix()
 	if hasattr(sys, "frozen"):
diff --git a/src/keys/__init__.py b/src/keys/__init__.py
index 69818a83..af724223 100644
--- a/src/keys/__init__.py
+++ b/src/keys/__init__.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from builtins import object
 import application
 import platform
 import exceptions
diff --git a/src/keystrokeEditor/__init__.py b/src/keystrokeEditor/__init__.py
index aef2cc0f..c76ba54e 100644
--- a/src/keystrokeEditor/__init__.py
+++ b/src/keystrokeEditor/__init__.py
@@ -1 +1,2 @@
-from keystrokeEditor import KeystrokeEditor
\ No newline at end of file
+from __future__ import absolute_import
+from .keystrokeEditor import KeystrokeEditor
\ No newline at end of file
diff --git a/src/keystrokeEditor/keystrokeEditor.py b/src/keystrokeEditor/keystrokeEditor.py
index 3f47abbc..c56b4cd0 100644
--- a/src/keystrokeEditor/keystrokeEditor.py
+++ b/src/keystrokeEditor/keystrokeEditor.py
@@ -1,8 +1,9 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import widgetUtils
 import config
-import wx_ui
-import constants
+from . import wx_ui
+from . import constants
 from pubsub import pub
 
 class KeystrokeEditor(object):
diff --git a/src/keystrokeEditor/wx_ui.py b/src/keystrokeEditor/wx_ui.py
index c8162ffa..dbd922d1 100644
--- a/src/keystrokeEditor/wx_ui.py
+++ b/src/keystrokeEditor/wx_ui.py
@@ -32,7 +32,7 @@ class keystrokeEditorDialog(baseDialog.BaseWXDialog):
   selection = self.keys.get_selected()
   self.keys.clear()
   for i in keystrokes:
-   if actions.has_key(i) == False:
+   if (i in actions) == False:
     continue
    action = actions[i]
    self.actions.append(i)
diff --git a/src/multiplatform_widgets/__init__.py b/src/multiplatform_widgets/__init__.py
index 126802d0..b282b4e9 100644
--- a/src/multiplatform_widgets/__init__.py
+++ b/src/multiplatform_widgets/__init__.py
@@ -1 +1,2 @@
-import widgets
\ No newline at end of file
+from __future__ import absolute_import
+from . import widgets
\ No newline at end of file
diff --git a/src/notifier/__init__.py b/src/notifier/__init__.py
index 3bd1ff6e..5eaab0ec 100644
--- a/src/notifier/__init__.py
+++ b/src/notifier/__init__.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 """ A cross platform notification system.
 Under Linux, the wx.NotificationMessage does not show a notification on the taskbar, so we decided to use dbus for showing notifications for linux and wx for Windows."""
+from __future__ import absolute_import
 import platform
 
 notify = None
@@ -8,10 +9,10 @@ notify = None
 def setup():
  global notify
  if platform.system() == "Windows":
-  import windows
+  from . import windows
   notify = windows.notification()
  elif platform.system() == "Linux":
-  import linux
+  from . import linux
   notify = linux.notification()
 
 def send(title, text):
diff --git a/src/sessionmanager/sessionManager.py b/src/sessionmanager/sessionManager.py
index caf72820..a3cacd5c 100644
--- a/src/sessionmanager/sessionManager.py
+++ b/src/sessionmanager/sessionManager.py
@@ -1,20 +1,21 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import shutil
 import widgetUtils
 import platform
 import output
 if platform.system() == "Windows":
- import wxUI as view
+ from . import wxUI as view
  from controller import settings
 elif platform.system() == "Linux":
- import gtkUI as view
+ from . import gtkUI as view
 import paths
 import time
 import os
 import logging
 import sessions
 from sessions.twitter import session
-import manager
+from . import manager
 import config_utils
 import config
 
@@ -77,7 +78,7 @@ class sessionManagerController(object):
  def do_ok(self):
   log.debug("Starting sessions...")
   for i in self.sessions:
-   if sessions.sessions.has_key(i) == True: continue
+   if (i in sessions.sessions) == True: continue
    s = session.Session(i)
    s.get_configuration()
    if i not in config.app["sessions"]["ignored_sessions"]:
diff --git a/src/sessions/base.py b/src/sessions/base.py
index 39f635a7..418f5875 100644
--- a/src/sessions/base.py
+++ b/src/sessions/base.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """ A base class to be derived in possible new sessions for TWBlue and services."""
+from __future__ import absolute_import
 import paths
 import output
 import time
@@ -9,7 +10,7 @@ import config_utils
 import shelve
 import application
 import os
-import session_exceptions as Exceptions
+from . import session_exceptions as Exceptions
 log = logging.getLogger("sessionmanager.session")
 
 class baseSession(object):
diff --git a/src/sessions/twitter/compose.py b/src/sessions/twitter/compose.py
index 79138ee3..554f95de 100644
--- a/src/sessions/twitter/compose.py
+++ b/src/sessions/twitter/compose.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import platform
 system = platform.system()
-import utils
+from . import utils
 import re
 import htmlentitydefs
 import time
@@ -10,7 +11,7 @@ import languageHandler
 import arrow
 import logging
 import config
-from long_tweets import twishort, tweets
+from .long_tweets import twishort, tweets
 log = logging.getLogger("compose")
 
 def StripChars(s):
@@ -38,13 +39,13 @@ def compose_tweet(tweet, db, relative_times, show_screen_names=False, session=No
    ts = original_date.replace(seconds=db["utc_offset"]).format(_(u"dddd, MMMM D, YYYY H:m:s"), locale=languageHandler.getLanguage())
  else:
   ts = tweet["created_at"]
- if tweet.has_key("message"):
+ if "message" in tweet:
   value = "message"
- elif tweet.has_key("full_text"):
+ elif "full_text" in tweet:
   value = "full_text"
  else:
   value = "text"
- if tweet.has_key("retweeted_status") and value != "message":
+ if "retweeted_status" in tweet and value != "message":
   text = StripChars(tweet["retweeted_status"][value])
  else:
   text = StripChars(tweet[value])
@@ -53,16 +54,16 @@ def compose_tweet(tweet, db, relative_times, show_screen_names=False, session=No
  else:
   user = tweet["user"]["name"]
  source = re.sub(r"(?s)<.*?>", "", tweet["source"])
- if tweet.has_key("retweeted_status"):
-  if tweet.has_key("message") == False and tweet["retweeted_status"]["is_quote_status"] == False:
+ if "retweeted_status" in tweet:
+  if ("message" in tweet) == False and tweet["retweeted_status"]["is_quote_status"] == False:
    text = "RT @%s: %s" % (tweet["retweeted_status"]["user"]["screen_name"], text)
   elif tweet["retweeted_status"]["is_quote_status"]:
    text = "%s" % (text)
   else:
    text = "RT @%s: %s" % (tweet["retweeted_status"]["user"]["screen_name"], text)
- if tweet.has_key("message") == False:
+ if ("message" in tweet) == False:
   urls = utils.find_urls_in_text(text)
-  if tweet.has_key("retweeted_status"):
+  if "retweeted_status" in tweet:
    for url in range(0, len(urls)):
     try:
      text = text.replace(urls[url], tweet["retweeted_status"]["entities"]["urls"][url]["expanded_url"])
@@ -110,14 +111,14 @@ def compose_direct_message(item, db, relative_times, show_screen_names=False, se
 
 def compose_quoted_tweet(quoted_tweet, original_tweet, show_screen_names=False, session=None):
  """ It receives a tweet and returns a list with the user, text for the tweet or message, date and the client where user is."""
- if quoted_tweet.has_key("retweeted_status"):
-  if quoted_tweet["retweeted_status"].has_key("full_text"):
+ if "retweeted_status" in quoted_tweet:
+  if "full_text" in quoted_tweet["retweeted_status"]:
    value = "full_text"
   else:
    value = "text"
   text = StripChars(quoted_tweet["retweeted_status"][value])
  else:
-  if quoted_tweet.has_key("full_text"):
+  if "full_text" in quoted_tweet:
    value = "full_text"
   else:
    value = "text"
@@ -127,13 +128,13 @@ def compose_quoted_tweet(quoted_tweet, original_tweet, show_screen_names=False,
  else:
   quoting_user = quoted_tweet["user"]["name"]
  source = re.sub(r"(?s)<.*?>", "", quoted_tweet["source"])
- if quoted_tweet.has_key("retweeted_status"):
+ if "retweeted_status" in quoted_tweet:
   text = "rt @%s: %s" % (quoted_tweet["retweeted_status"]["user"]["screen_name"], text)
  if text[-1] in chars: text=text+"."
  original_user = original_tweet["user"]["screen_name"]
- if original_tweet.has_key("message"):
+ if "message" in original_tweet:
   original_text = original_tweet["message"]
- elif original_tweet.has_key("full_text"):
+ elif "full_text" in original_tweet:
   original_text = StripChars(original_tweet["full_text"])
  else:
    original_text = StripChars(original_tweet["text"])
@@ -151,7 +152,7 @@ def compose_followers_list(tweet, db, relative_times=True, show_screen_names=Fal
    ts = original_date.replace(seconds=db["utc_offset"]).format(_(u"dddd, MMMM D, YYYY H:m:s"), locale=languageHandler.getLanguage())
  else:
   ts = tweet["created_at"]
- if tweet.has_key("status"):
+ if "status" in tweet:
   if len(tweet["status"]) > 4 and system == "Windows":
    original_date2 = arrow.get(tweet["status"]["created_at"], "ddd MMM D H:m:s Z YYYY", locale="en")
    if relative_times:
diff --git a/src/sessions/twitter/long_tweets/tweets.py b/src/sessions/twitter/long_tweets/tweets.py
index 95e6052e..5445f8fa 100644
--- a/src/sessions/twitter/long_tweets/tweets.py
+++ b/src/sessions/twitter/long_tweets/tweets.py
@@ -22,9 +22,9 @@ def is_long(tweet):
  """ Check if the passed tweet contains a quote in its metadata.
   tweet dict: a tweet dictionary.
   returns True if a quote is detected, False otherwise."""
- if tweet.has_key("quoted_status_id") and tweet.has_key("quoted_status"):
+ if "quoted_status_id" in tweet and "quoted_status" in tweet:
   return tweet["quoted_status_id"]
- elif tweet.has_key("retweeted_status") and tweet["retweeted_status"].has_key("quoted_status_id") and tweet["retweeted_status"].has_key("quoted_status"):
+ elif "retweeted_status" in tweet and "quoted_status_id" in tweet["retweeted_status"] and "quoted_status" in tweet["retweeted_status"]:
   return tweet["retweeted_status"]["quoted_status_id"]
  return False
 
@@ -32,8 +32,8 @@ def clear_url(tweet):
  """ Reads data from a quoted tweet and removes the link to the Status from the tweet's text.
   tweet dict: a tweet dictionary.
   returns a tweet dictionary without the URL to the status ID in its text to display."""
- if tweet.has_key("retweeted_status"):
-  if tweet["retweeted_status"].has_key("full_text"):
+ if "retweeted_status" in tweet:
+  if "full_text" in tweet["retweeted_status"]:
    value = "full_text"
   else:
    value = "text"
@@ -41,7 +41,7 @@ def clear_url(tweet):
   try: tweet["message"] = tweet["message"].replace(urls[-1], "")
   except IndexError: pass
  else:
-  if tweet.has_key("full_text"):
+  if "full_text" in tweet:
    value = "full_text"
   else:
    value = "text"
diff --git a/src/sessions/twitter/long_tweets/twishort.py b/src/sessions/twitter/long_tweets/twishort.py
index df27ccbc..46481828 100644
--- a/src/sessions/twitter/long_tweets/twishort.py
+++ b/src/sessions/twitter/long_tweets/twishort.py
@@ -16,6 +16,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ############################################################
+from __future__ import print_function
 import logging
 import requests
 import keys
@@ -47,7 +48,7 @@ def is_long(tweet):
   # see https://github.com/manuelcortez/TWBlue/issues/103
   except TypeError:
    pass
- if long == False and tweet.has_key("retweeted_status"):
+ if long == False and "retweeted_status" in tweet:
   for url in range(0, len(tweet["retweeted_status"]["entities"]["urls"])):
    try:
     if tweet["retweeted_status"]["entities"]["urls"][url] != None and "twishort.com" in tweet["retweeted_status"]["entities"]["urls"][url]["expanded_url"]:
@@ -97,5 +98,5 @@ def create_tweet(user_token, user_secret, text, media=0):
  try:
   return response.json()["text_to_tweet"]
  except:
-  print "There was a problem creating a long tweet"
+  print("There was a problem creating a long tweet")
   return 0
\ No newline at end of file
diff --git a/src/sessions/twitter/session.py b/src/sessions/twitter/session.py
index 1a08198e..fbcd429d 100644
--- a/src/sessions/twitter/session.py
+++ b/src/sessions/twitter/session.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 """ This is the main session needed to access all Twitter Features."""
+from __future__ import absolute_import
 import os
 import time
 import logging
@@ -15,7 +16,7 @@ from keys import keyring
 from sessions import base
 from sessions.twitter import utils, compose
 from sessions.twitter.long_tweets import tweets, twishort
-from wxUI import authorisationDialog
+from .wxUI import authorisationDialog
 
 log = logging.getLogger("sessions.twitterSession")
 
@@ -30,9 +31,9 @@ class Session(base.baseSession):
   returns the number of items that have been added in this execution"""
   num = 0
   last_id = None
-  if self.db.has_key(name) == False:
+  if (name in self.db) == False:
    self.db[name] = []
-  if self.db.has_key("users") == False:
+  if ("users" in self.db) == False:
    self.db["users"] = {}
   if ignore_older and len(self.db[name]) > 0:
    if self.settings["general"]["reverse_timelines"] == False:
@@ -51,8 +52,8 @@ class Session(base.baseSession):
     if self.settings["general"]["reverse_timelines"] == False: self.db[name].append(i)
     else: self.db[name].insert(0, i)
     num = num+1
-    if i.has_key("user") == True:
-     if self.db["users"].has_key(i["user"]["id"]) == False:
+    if ("user" in i) == True:
+     if (i["user"]["id"] in self.db["users"]) == False:
       self.db["users"][i["user"]["id"]] = i["user"]
   return num
 
@@ -66,7 +67,7 @@ class Session(base.baseSession):
   if name == "direct_messages":
    return self.order_direct_messages(data)
   num = 0
-  if self.db.has_key(name) == False:
+  if (name in self.db) == False:
    self.db[name] = {}
    self.db[name]["items"] = []
   for i in data:
@@ -82,12 +83,12 @@ class Session(base.baseSession):
   returns the number of incoming messages processed in this execution, and sends an event with data regarding amount of sent direct messages added."""
   incoming = 0
   sent = 0
-  if self.db.has_key("direct_messages") == False:
+  if ("direct_messages" in self.db) == False:
    self.db["direct_messages"] = {}
    self.db["direct_messages"]["items"] = []
   for i in data:
    if i["message_create"]["sender_id"] == self.db["user_id"]:
-    if self.db.has_key("sent_direct_messages") and utils.find_item(i["id"], self.db["sent_direct_messages"]["items"]) == None:
+    if "sent_direct_messages" in self.db and utils.find_item(i["id"], self.db["sent_direct_messages"]["items"]) == None:
      if self.settings["general"]["reverse_timelines"] == False: self.db["sent_direct_messages"]["items"].append(i)
      else: self.db["sent_direct_messages"]["items"].insert(0, i)
      sent = sent+1
@@ -164,13 +165,13 @@ class Session(base.baseSession):
   users, dm bool: If any of these is set to True, the function will treat items as users or dm (they need different handling).
   name str: name of the database item to put new element in."""
   results = []
-  if kwargs.has_key("cursor") and kwargs["cursor"] == 0:
+  if "cursor" in kwargs and kwargs["cursor"] == 0:
    output.speak(_(u"There are no more items to retrieve in this buffer."))
    return
   data = getattr(self.twitter, update_function)(*args, **kwargs)
   if users == True:
-   if type(data) == dict and data.has_key("next_cursor"):
-    if data.has_key("next_cursor"): # There are more objects to retrieve.
+   if type(data) == dict and "next_cursor" in data:
+    if "next_cursor" in data: # There are more objects to retrieve.
      self.db[name]["cursor"] = data["next_cursor"]
     else: # Set cursor to 0, wich means no more items available.
      self.db[name]["cursor"] = 0
@@ -178,7 +179,7 @@ class Session(base.baseSession):
    elif type(data) == list:
     results.extend(data[1:])
   elif dm == True:
-   if data.has_key("next_cursor"): # There are more objects to retrieve.
+   if "next_cursor" in data: # There are more objects to retrieve.
     self.db[name]["cursor"] = data["next_cursor"]
    else: # Set cursor to 0, wich means no more items available.
     self.db[name]["cursor"] = 0
@@ -289,7 +290,7 @@ class Session(base.baseSession):
   name str: Name to save items to the database.
   function str: A function to get the items."""
   last_id = -1
-  if self.db.has_key(name):
+  if name in self.db:
    try:
     if self.db[name][0]["id"] > self.db[name][-1]["id"]:
      last_id = self.db[name][0]["id"]
@@ -309,7 +310,7 @@ class Session(base.baseSession):
   returns number of items retrieved."""
   items_ = []
   try:
-   if self.db[name].has_key("cursor") and get_previous:
+   if "cursor" in self.db[name] and get_previous:
     cursor = self.db[name]["cursor"]
    else:
     cursor = -1
@@ -322,7 +323,7 @@ class Session(base.baseSession):
   tl[items].reverse()
   num = self.order_cursored_buffer(name, tl[items])
   # Recently, Twitter's new endpoints have cursor if there are more results.
-  if tl.has_key("next_cursor"):
+  if "next_cursor" in tl:
    self.db[name]["cursor"] = tl["next_cursor"]
   else:
    self.db[name]["cursor"] = 0
@@ -352,7 +353,7 @@ class Session(base.baseSession):
  def get_quoted_tweet(self, tweet):
   """ Process a tweet and extract all information related to the quote."""
   quoted_tweet = tweet
-  if tweet.has_key("full_text"):
+  if "full_text" in tweet:
    value = "full_text"
   else:
    value = "text"
@@ -360,16 +361,16 @@ class Session(base.baseSession):
   for url in range(0, len(urls)):
    try:  quoted_tweet[value] = quoted_tweet[value].replace(urls[url], quoted_tweet["entities"]["urls"][url]["expanded_url"])
    except IndexError: pass
-  if quoted_tweet.has_key("quoted_status"):
+  if "quoted_status" in quoted_tweet:
    original_tweet = quoted_tweet["quoted_status"]
-  elif quoted_tweet.has_key("retweeted_status") and quoted_tweet["retweeted_status"].has_key("quoted_status"):
+  elif "retweeted_status" in quoted_tweet and "quoted_status" in quoted_tweet["retweeted_status"]:
    original_tweet = quoted_tweet["retweeted_status"]["quoted_status"]
   else:
    return quoted_tweet
   original_tweet = self.check_long_tweet(original_tweet)
-  if original_tweet.has_key("full_text"):
+  if "full_text" in original_tweet:
    value = "full_text"
-  elif original_tweet.has_key("message"):
+  elif "message" in original_tweet:
    value = "message"
   else:
    value = "text"
@@ -386,13 +387,13 @@ class Session(base.baseSession):
   long = twishort.is_long(tweet)
   if long != False and config.app["app-settings"]["handle_longtweets"]:
    message = twishort.get_full_text(long)
-   if tweet.has_key("quoted_status"):
+   if "quoted_status" in tweet:
     tweet["quoted_status"]["message"] = message
     if tweet["quoted_status"]["message"] == False: return False
     tweet["quoted_status"]["twishort"] = True
     for i in tweet["quoted_status"]["entities"]["user_mentions"]:
      if "@%s" % (i["screen_name"]) not in tweet["quoted_status"]["message"] and i["screen_name"] != tweet["user"]["screen_name"]:
-      if tweet["quoted_status"].has_key("retweeted_status") and tweet["retweeted_status"]["user"]["screen_name"] == i["screen_name"]:
+      if "retweeted_status" in tweet["quoted_status"] and tweet["retweeted_status"]["user"]["screen_name"] == i["screen_name"]:
        continue
      tweet["quoted_status"]["message"] = u"@%s %s" % (i["screen_name"], tweet["message"])
    else:
@@ -401,7 +402,7 @@ class Session(base.baseSession):
     tweet["twishort"] = True
     for i in tweet["entities"]["user_mentions"]:
      if "@%s" % (i["screen_name"]) not in tweet["message"] and i["screen_name"] != tweet["user"]["screen_name"]:
-      if tweet.has_key("retweeted_status") and tweet["retweeted_status"]["user"]["screen_name"] == i["screen_name"]:
+      if "retweeted_status" in tweet and tweet["retweeted_status"]["user"]["screen_name"] == i["screen_name"]:
        continue
   return tweet
 
@@ -409,7 +410,7 @@ class Session(base.baseSession):
   """ Returns an user object associated with an ID.
   id str: User identifier, provided by Twitter.
   returns an user dict."""
-  if self.db.has_key("users") == False or self.db["users"].has_key(id) == False:
+  if ("users" in self.db) == False or (id in self.db["users"]) == False:
    user = self.twitter.show_user(id=id)
    self.db["users"][user["id_str"]] = user
    return user
@@ -420,7 +421,7 @@ class Session(base.baseSession):
   """ Returns an user identifier associated with a screen_name.
   screen_name str: User name, such as tw_blue2, provided by Twitter.
   returns an user ID."""
-  if self.db.has_key("users") == False:
+  if ("users" in self.db) == False:
    user = utils.if_user_exists(self.twitter, screen_name)
    self.db["users"][user["id_str"]] = user
    return user["id_str"]
diff --git a/src/sessions/twitter/utils.py b/src/sessions/twitter/utils.py
index cf1886fa..2c22ced4 100644
--- a/src/sessions/twitter/utils.py
+++ b/src/sessions/twitter/utils.py
@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+from __future__ import print_function
 import url_shortener, re
 import output
 from twython import TwythonError
@@ -24,32 +25,32 @@ def find_urls_in_text(text):
 def find_urls (tweet):
  urls = []
  # Let's add URLS from tweet entities.
- if tweet.has_key("message_create"):
+ if "message_create" in tweet:
   entities = tweet["message_create"]["message_data"]["entities"]
  else:
   entities = tweet["entities"]
  for i in entities["urls"]:
   if i["expanded_url"] not in urls:
    urls.append(i["expanded_url"])
- if tweet.has_key("quoted_status"):
+ if "quoted_status" in tweet:
   for i in tweet["quoted_status"]["entities"]["urls"]:
    if i["expanded_url"] not in urls:
     urls.append(i["expanded_url"])
- if tweet.has_key("retweeted_status"):
+ if "retweeted_status" in tweet:
   for i in tweet["retweeted_status"]["entities"]["urls"]:
    if i["expanded_url"] not in urls:
     urls.append(i["expanded_url"])
-  if tweet["retweeted_status"].has_key("quoted_status"):
+  if "quoted_status" in tweet["retweeted_status"]:
    for i in tweet["retweeted_status"]["quoted_status"]["entities"]["urls"]:
     if i["expanded_url"] not in urls:
      urls.append(i["expanded_url"])
- if tweet.has_key("message"):
+ if "message" in tweet:
   i = "message"
- elif tweet.has_key("full_text"):
+ elif "full_text" in tweet:
   i = "full_text"
  else:
   i = "text"
- if tweet.has_key("message_create"):
+ if "message_create" in tweet:
   extracted_urls = find_urls_in_text(tweet["message_create"]["message_data"]["text"])
  else:
   extracted_urls = find_urls_in_text(tweet[i])
@@ -82,7 +83,7 @@ def is_audio(tweet):
  try:
   if len(find_urls(tweet)) < 1:
    return False
-  if tweet.has_key("message_create"):
+  if "message_create" in tweet:
    entities = tweet["message_create"]["message_data"]["entities"]
   else:
    entities = tweet["entities"]
@@ -91,22 +92,22 @@ def is_audio(tweet):
     if i["text"] == "audio":
      return True
  except IndexError:
-  print tweet["entities"]["hashtags"]
+  print(tweet["entities"]["hashtags"])
   log.exception("Exception while executing is_audio hashtag algorithm")
 
 def is_geocoded(tweet):
- if tweet.has_key("coordinates") and tweet["coordinates"] != None:
+ if "coordinates" in tweet and tweet["coordinates"] != None:
   return True
 
 def is_media(tweet):
- if tweet.has_key("message_create"):
+ if "message_create" in tweet:
   entities = tweet["message_create"]["message_data"]["entities"]
  else:
   entities = tweet["entities"]
- if entities.has_key("media") == False:
+ if ("media" in entities) == False:
   return False
  for i in entities["media"]:
-  if i.has_key("type") and i["type"] == "photo":
+  if "type" in i and i["type"] == "photo":
    return True
  return False
 
@@ -121,10 +122,10 @@ def get_all_mentioned(tweet, conf, field="screen_name"):
 
 def get_all_users(tweet, conf):
  string = []
- if tweet.has_key("retweeted_status"):
+ if "retweeted_status" in tweet:
   string.append(tweet["user"]["screen_name"])
   tweet = tweet["retweeted_status"]
- if tweet.has_key("sender"):
+ if "sender" in tweet:
   string.append(tweet["sender"]["screen_name"])
  else:
   if tweet["user"]["screen_name"] != conf["user_name"]:
@@ -161,16 +162,16 @@ def api_call(parent=None, call_name=None, preexec_message="", success="", succes
 
 def is_allowed(tweet, settings, buffer_name):
  clients = settings["twitter"]["ignored_clients"]
- if tweet.has_key("sender"): return True
+ if "sender" in tweet: return True
  allowed = True
  tweet_data = {}
- if tweet.has_key("retweeted_status"):
+ if "retweeted_status" in tweet:
   tweet_data["retweet"] = True
  if tweet["in_reply_to_status_id_str"] != None:
   tweet_data["reply"] = True
- if tweet.has_key("quoted_status"):
+ if "quoted_status" in tweet:
   tweet_data["quote"] = True
- if tweet.has_key("retweeted_status"): tweet = tweet["retweeted_status"]
+ if "retweeted_status" in tweet: tweet = tweet["retweeted_status"]
  source = re.sub(r"(?s)<.*?>", "", tweet["source"])
  for i in clients:
   if i.lower() == source.lower():
@@ -178,7 +179,7 @@ def is_allowed(tweet, settings, buffer_name):
  return filter_tweet(tweet, tweet_data, settings, buffer_name)
 
 def filter_tweet(tweet, tweet_data, settings, buffer_name):
- if tweet.has_key("full_text"):
+ if "full_text" in tweet:
   value = "full_text"
  else:
   value = "text"
@@ -187,23 +188,23 @@ def filter_tweet(tweet, tweet_data, settings, buffer_name):
    regexp = settings["filters"][i]["regexp"]
    word = settings["filters"][i]["word"]
    # Added if/else for compatibility reasons.
-   if settings["filters"][i].has_key("allow_rts"):
+   if "allow_rts" in settings["filters"][i]:
     allow_rts = settings["filters"][i]["allow_rts"]
    else:
     allow_rts = "True"
-   if settings["filters"][i].has_key("allow_quotes"):
+   if "allow_quotes" in settings["filters"][i]:
     allow_quotes = settings["filters"][i]["allow_quotes"]
    else:
     allow_quotes = "True"
-   if settings["filters"][i].has_key("allow_replies"):
+   if "allow_replies" in settings["filters"][i]:
     allow_replies = settings["filters"][i]["allow_replies"]
    else:
     allow_replies = "True"
-   if allow_rts == "False" and tweet_data.has_key("retweet"):
+   if allow_rts == "False" and "retweet" in tweet_data:
     return False
-   if allow_quotes == "False" and tweet_data.has_key("quote"):
+   if allow_quotes == "False" and "quote" in tweet_data:
     return False
-   if allow_replies == "False" and tweet_data.has_key("reply"):
+   if allow_replies == "False" and "reply" in tweet_data:
     return False
    if word != "" and settings["filters"][i]["if_word_exists"]:
     if word in tweet[value]:
diff --git a/src/update/updater.py b/src/update/updater.py
index 2384f968..5b19da2d 100644
--- a/src/update/updater.py
+++ b/src/update/updater.py
@@ -1,11 +1,12 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import application
-import update
+from . import update
 import platform
 import logging
 import output
 from requests.exceptions import ConnectionError
-from wxUpdater import *
+from .wxUpdater import *
 logger = logging.getLogger("updater")
 
 def do_update(endpoint=application.update_url):
diff --git a/src/update/wxUpdater.py b/src/update/wxUpdater.py
index 761d620a..b3f3f34e 100644
--- a/src/update/wxUpdater.py
+++ b/src/update/wxUpdater.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
 import application
-import utils
+from . import utils
 
 progress_dialog = None
 
diff --git a/src/widgetUtils/__init__.py b/src/widgetUtils/__init__.py
index 30509ef6..0a15dadd 100644
--- a/src/widgetUtils/__init__.py
+++ b/src/widgetUtils/__init__.py
@@ -1,5 +1,6 @@
+from __future__ import absolute_import
 import platform
 if platform.system() == "Windows":
- from wxUtils import *
+ from .wxUtils import *
 #elif platform.system() == "Linux":
 # from gtkUtils import *
diff --git a/src/wxUI/buffers/__init__.py b/src/wxUI/buffers/__init__.py
index 2380f3a9..d62019d7 100644
--- a/src/wxUI/buffers/__init__.py
+++ b/src/wxUI/buffers/__init__.py
@@ -1,11 +1,12 @@
 # -*- coding: utf-8 -*-
-from base import basePanel
-from dm import dmPanel
-from events import eventsPanel
-from favourites import favsPanel
-from lists import listPanel
-from panels import accountPanel, emptyPanel
-from people import peoplePanel
-from trends import trendsPanel
-from tweet_searches import searchPanel
-from user_searches import searchUsersPanel
\ No newline at end of file
+from __future__ import absolute_import
+from .base import basePanel
+from .dm import dmPanel
+from .events import eventsPanel
+from .favourites import favsPanel
+from .lists import listPanel
+from .panels import accountPanel, emptyPanel
+from .people import peoplePanel
+from .trends import trendsPanel
+from .tweet_searches import searchPanel
+from .user_searches import searchUsersPanel
\ No newline at end of file
diff --git a/src/wxUI/buffers/dm.py b/src/wxUI/buffers/dm.py
index db95aae0..774433ed 100644
--- a/src/wxUI/buffers/dm.py
+++ b/src/wxUI/buffers/dm.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from base import basePanel
+from .base import basePanel
 
 class dmPanel(basePanel):
  def __init__(self, parent, name):
diff --git a/src/wxUI/buffers/favourites.py b/src/wxUI/buffers/favourites.py
index 4837dd6f..5dd91a05 100644
--- a/src/wxUI/buffers/favourites.py
+++ b/src/wxUI/buffers/favourites.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from base import basePanel
+from .base import basePanel
 
 class favsPanel(basePanel):
  def __init__(self, parent, name):
diff --git a/src/wxUI/buffers/lists.py b/src/wxUI/buffers/lists.py
index 82ca73bc..baf6c95a 100644
--- a/src/wxUI/buffers/lists.py
+++ b/src/wxUI/buffers/lists.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from base import basePanel
+from .base import basePanel
 
 class listPanel(basePanel):
  def __init__(self, parent, name):
diff --git a/src/wxUI/buffers/people.py b/src/wxUI/buffers/people.py
index f887ba4d..47e5cf17 100644
--- a/src/wxUI/buffers/people.py
+++ b/src/wxUI/buffers/people.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
 from multiplatform_widgets import widgets
-from base import basePanel
+from .base import basePanel
 
 class peoplePanel(basePanel):
  """ Buffer used to show people."""
diff --git a/src/wxUI/buffers/tweet_searches.py b/src/wxUI/buffers/tweet_searches.py
index 28cf974e..ad0c7aa0 100644
--- a/src/wxUI/buffers/tweet_searches.py
+++ b/src/wxUI/buffers/tweet_searches.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from base import basePanel
+from .base import basePanel
 
 class searchPanel(basePanel):
  def __init__(self, parent, name):
diff --git a/src/wxUI/buffers/user_searches.py b/src/wxUI/buffers/user_searches.py
index b3b1415c..c1ff9745 100644
--- a/src/wxUI/buffers/user_searches.py
+++ b/src/wxUI/buffers/user_searches.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-from tweet_searches import searchPanel
+from .tweet_searches import searchPanel
 from multiplatform_widgets import widgets
 
 class searchUsersPanel(searchPanel):
diff --git a/src/wxUI/dialogs/__init__.py b/src/wxUI/dialogs/__init__.py
index a9c57be2..3605a2d1 100644
--- a/src/wxUI/dialogs/__init__.py
+++ b/src/wxUI/dialogs/__init__.py
@@ -1 +1,2 @@
-import baseDialog, trends, configuration, lists, message, search, find, show_user, update_profile, urlList, userSelection, utils, filterDialogs
+from __future__ import absolute_import
+from . import baseDialog, trends, configuration, lists, message, search, find, show_user, update_profile, urlList, userSelection, utils, filterDialogs
diff --git a/src/wxUI/dialogs/configuration.py b/src/wxUI/dialogs/configuration.py
index 3e7e5ff9..dcafb0ec 100644
--- a/src/wxUI/dialogs/configuration.py
+++ b/src/wxUI/dialogs/configuration.py
@@ -1,11 +1,12 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import logging as original_logger
 import wx
 import application
 import output
 import config
 import widgetUtils
-import baseDialog
+from . import baseDialog
 from multiplatform_widgets import widgets
 
 class general(wx.Panel, baseDialog.BaseWXDialog):
diff --git a/src/wxUI/dialogs/filterDialogs.py b/src/wxUI/dialogs/filterDialogs.py
index 6430df19..608ec2c8 100644
--- a/src/wxUI/dialogs/filterDialogs.py
+++ b/src/wxUI/dialogs/filterDialogs.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-import baseDialog
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import baseDialog
 import wx
 import widgetUtils
 from multiplatform_widgets import widgets
diff --git a/src/wxUI/dialogs/find.py b/src/wxUI/dialogs/find.py
index 48396295..0b18ea20 100644
--- a/src/wxUI/dialogs/find.py
+++ b/src/wxUI/dialogs/find.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-import baseDialog
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import baseDialog
 import wx
 
 class findDialog(baseDialog.BaseWXDialog):
diff --git a/src/wxUI/dialogs/search.py b/src/wxUI/dialogs/search.py
index 12849117..34992613 100644
--- a/src/wxUI/dialogs/search.py
+++ b/src/wxUI/dialogs/search.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import widgetUtils
-import baseDialog
+from . import baseDialog
 import wx
 from extra import translator
 
diff --git a/src/wxUI/dialogs/show_user.py b/src/wxUI/dialogs/show_user.py
index 74b02070..2fb8d4ca 100644
--- a/src/wxUI/dialogs/show_user.py
+++ b/src/wxUI/dialogs/show_user.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-import baseDialog
+from . import baseDialog
 
 class showUserProfile(baseDialog.BaseWXDialog):
  def __init__(self):
diff --git a/src/wxUI/dialogs/trends.py b/src/wxUI/dialogs/trends.py
index 6cf973f6..fa591b36 100644
--- a/src/wxUI/dialogs/trends.py
+++ b/src/wxUI/dialogs/trends.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
-import baseDialog
+from __future__ import absolute_import
+# -*- coding: utf-8 -*-
+from . import baseDialog
 import wx
 
 class trendingTopicsDialog(baseDialog.BaseWXDialog):
diff --git a/src/wxUI/dialogs/update_profile.py b/src/wxUI/dialogs/update_profile.py
index d9286516..ea248bc3 100644
--- a/src/wxUI/dialogs/update_profile.py
+++ b/src/wxUI/dialogs/update_profile.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
+from __future__ import absolute_import
 import wx
-import baseDialog
+from . import baseDialog
 
 class updateProfileDialog(baseDialog.BaseWXDialog):
  def __init__(self):
diff --git a/src/wxUI/dialogs/utils.py b/src/wxUI/dialogs/utils.py
index fbc1be23..0adb20ca 100644
--- a/src/wxUI/dialogs/utils.py
+++ b/src/wxUI/dialogs/utils.py
@@ -16,8 +16,9 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ############################################################
+from __future__ import absolute_import
 import wx
-import baseDialog
+from . import baseDialog
 
 class selectUserDialog(baseDialog.BaseWXDialog):
  def __init__(self, title, users):