diff --git a/docs/conf.py b/docs/conf.py
index 9c4a292..4c5352a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -30,7 +30,7 @@ import os
 import sys
 sys.path.insert(0, os.path.abspath('../'))
 autodoc_member_order = 'by_source'
-#print(sys.path)
+# print(sys.path)
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
@@ -154,7 +154,7 @@ todo_include_todos = False
 # html_logo = None
 
 # The name of an image file (relative to this directory) to use as a favicon of
-# the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# the docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
 #
 # html_favicon = None
diff --git a/mastodon/Mastodon.py b/mastodon/Mastodon.py
index c835bac..c8f90ee 100644
--- a/mastodon/Mastodon.py
+++ b/mastodon/Mastodon.py
@@ -6,7 +6,6 @@ import mimetypes
 import time
 import random
 import string
-import pytz
 import datetime
 from contextlib import closing
 import pytz
@@ -17,6 +16,7 @@ import dateutil.parser
 import re
 import copy
 
+
 class Mastodon:
     """
     Super basic but thorough and easy to use Mastodon
@@ -28,12 +28,12 @@ class Mastodon:
     __DEFAULT_BASE_URL = 'https://mastodon.social'
     __DEFAULT_TIMEOUT = 300
 
-
     ###
     # Registering apps
     ###
     @staticmethod
-    def create_app(client_name, scopes = ['read', 'write', 'follow'], redirect_uris = None, website = None, to_file = None, api_base_url = __DEFAULT_BASE_URL, request_timeout = __DEFAULT_TIMEOUT):
+    def create_app(client_name, scopes=['read', 'write', 'follow'], redirect_uris=None, website=None, to_file=None,
+                   api_base_url=__DEFAULT_BASE_URL, request_timeout=__DEFAULT_TIMEOUT):
         """
         Create a new app with given client_name and scopes (read, write, follow)
 
@@ -47,7 +47,7 @@ class Mastodon:
         Returns client_id and client_secret.
         """
         api_base_url = Mastodon.__protocolize(api_base_url)
-        
+
         request_data = {
             'client_name': client_name,
             'scopes': " ".join(scopes)
@@ -55,18 +55,18 @@ class Mastodon:
 
         try:
             if redirect_uris is not None:
-                request_data['redirect_uris'] = redirect_uris;
+                request_data['redirect_uris'] = redirect_uris
             else:
-                request_data['redirect_uris'] = 'urn:ietf:wg:oauth:2.0:oob';
+                request_data['redirect_uris'] = 'urn:ietf:wg:oauth:2.0:oob'
             if website is not None:
                 request_data['website'] = website
-            
-            response = requests.post(api_base_url + '/api/v1/apps', data = request_data, timeout = request_timeout)
+
+            response = requests.post(api_base_url + '/api/v1/apps', data=request_data, timeout=request_timeout)
             response = response.json()
         except Exception as e:
             raise MastodonNetworkError("Could not complete request: %s" % e)
 
-        if to_file != None:
+        if to_file is not None:
             with open(to_file, 'w') as secret_file:
                 secret_file.write(response['client_id'] + '\n')
                 secret_file.write(response['client_secret'] + '\n')
@@ -76,7 +76,9 @@ class Mastodon:
     ###
     # Authentication, including constructor
     ###
-    def __init__(self, client_id, client_secret = None, access_token = None, api_base_url = __DEFAULT_BASE_URL, debug_requests = False, ratelimit_method = "wait", ratelimit_pacefactor = 1.1, request_timeout = __DEFAULT_TIMEOUT):
+    def __init__(self, client_id, client_secret=None, access_token=None, api_base_url=__DEFAULT_BASE_URL,
+                 debug_requests=False, ratelimit_method="wait", ratelimit_pacefactor=1.1,
+                 request_timeout=__DEFAULT_TIMEOUT):
         """
         Create a new API wrapper instance based on the given client_secret and client_id. If you
         give a client_id and it is not a file, you must also give a secret.
@@ -115,7 +117,7 @@ class Mastodon:
 
         self.request_timeout = request_timeout
 
-        if not ratelimit_method in ["throw", "wait", "pace"]:
+        if ratelimit_method not in ["throw", "wait", "pace"]:
             raise MastodonIllegalArgumentError("Invalid ratelimit method.")
 
         if os.path.isfile(self.client_id):
@@ -123,15 +125,15 @@ class Mastodon:
                 self.client_id = secret_file.readline().rstrip()
                 self.client_secret = secret_file.readline().rstrip()
         else:
-            if self.client_secret == None:
+            if self.client_secret is None:
                 raise MastodonIllegalArgumentError('Specified client id directly, but did not supply secret')
 
-        if self.access_token != None and os.path.isfile(self.access_token):
+        if self.access_token is not None and os.path.isfile(self.access_token):
             with open(self.access_token, 'r') as token_file:
                 self.access_token = token_file.readline().rstrip()
-                
 
-    def auth_request_url(self, client_id = None, redirect_uris = "urn:ietf:wg:oauth:2.0:oob", scopes = ['read', 'write', 'follow']):
+    def auth_request_url(self, client_id=None, redirect_uris="urn:ietf:wg:oauth:2.0:oob",
+                         scopes=['read', 'write', 'follow']):
         """Returns the url that a client needs to request the grant from the server.
         """
         if client_id is None:
@@ -140,8 +142,8 @@ class Mastodon:
             if os.path.isfile(client_id):
                 with open(client_id, 'r') as secret_file:
                     client_id = secret_file.readline().rstrip()
-                
-        params = {}
+
+        params = dict()
         params['client_id'] = client_id
         params['response_type'] = "code"
         params['redirect_uri'] = redirect_uris
@@ -149,18 +151,18 @@ class Mastodon:
         formatted_params = urlencode(params)
         return "".join([self.api_base_url, "/oauth/authorize?", formatted_params])
 
-    def log_in(self, username = None, password = None,\
-            code = None, redirect_uri = "urn:ietf:wg:oauth:2.0:oob", refresh_token = None,\
-            scopes = ['read', 'write', 'follow'], to_file = None):
+    def log_in(self, username=None, password=None,
+               code=None, redirect_uri="urn:ietf:wg:oauth:2.0:oob", refresh_token=None,
+               scopes=['read', 'write', 'follow'], to_file=None):
         """
         Your username is the e-mail you use to log in into mastodon.
-        
+
         Can persist access token to file, to be used in the constructor.
-        
+
         Supports refresh_token but Mastodon.social doesn't implement it at the moment.
 
         Handles password, authorization_code, and refresh_token authentication.
-        
+
         Will throw a MastodonIllegalArgumentError if username / password
         are wrong, scopes are not valid or granted scopes differ from requested.
 
@@ -179,13 +181,13 @@ class Mastodon:
             params['grant_type'] = 'refresh_token'
         else:
             raise MastodonIllegalArgumentError('Invalid arguments given. username and password or code are required.')
-        
+
         params['client_id'] = self.client_id
         params['client_secret'] = self.client_secret
         params['scope'] = " ".join(scopes)
-        
+
         try:
-            response = self.__api_request('POST', '/oauth/token', params, do_ratelimiting = False)
+            response = self.__api_request('POST', '/oauth/token', params, do_ratelimiting=False)
             self.access_token = response['access_token']
             self.__set_refresh_token(response.get('refresh_token'))
             self.__set_token_expired(int(response.get('expires_in', 0)))
@@ -201,9 +203,10 @@ class Mastodon:
         received_scopes = " ".join(sorted(response["scope"].split(" ")))
 
         if requested_scopes != received_scopes:
-            raise MastodonAPIError('Granted scopes "' + received_scopes + '" differ from requested scopes "' + requested_scopes + '".')
+            raise MastodonAPIError(
+                'Granted scopes "' + received_scopes + '" differ from requested scopes "' + requested_scopes + '".')
 
-        if to_file != None:
+        if to_file is not None:
             with open(to_file, 'w') as token_file:
                 token_file.write(response['access_token'] + '\n')
 
@@ -223,7 +226,7 @@ class Mastodon:
     ###
     # Reading data: Timelines
     ##
-    def timeline(self, timeline = "home", max_id = None, since_id = None, limit = None):
+    def timeline(self, timeline="home", max_id=None, since_id=None, limit=None):
         """
         Fetch statuses, most recent ones first. Timeline can be home, local, public,
         or tag/hashtag. See the following functions documentation for what those do.
@@ -239,39 +242,44 @@ class Mastodon:
             params_initial['local'] = True
 
         params = self.__generate_params(params_initial, ['timeline'])
-        return self.__api_request('GET', '/api/v1/timelines/' + timeline, params)
+        url = '/api/v1/timelines/{0}'.format(timeline)
+        return self.__api_request('GET', url, params)
 
-    def timeline_home(self, max_id = None, since_id = None, limit = None):
+    def timeline_home(self, max_id=None, since_id=None, limit=None):
         """
         Fetch the authenticated users home timeline (i.e. followed users and self).
 
         Returns a list of toot dicts.
         """
-        return self.timeline('home', max_id = max_id, since_id = since_id, limit = limit)
+        return self.timeline('home', max_id=max_id, since_id=since_id,
+                             limit=limit)
 
-    def timeline_local(self, max_id = None, since_id = None, limit = None):
+    def timeline_local(self, max_id=None, since_id=None, limit=None):
         """
         Fetches the local / instance-wide timeline, not including replies.
 
         Returns a list of toot dicts.
         """
-        return self.timeline('local', max_id = max_id, since_id = since_id, limit = limit)
+        return self.timeline('local', max_id=max_id, since_id=since_id,
+                             limit=limit)
 
-    def timeline_public(self, max_id = None, since_id = None, limit = None):
+    def timeline_public(self, max_id=None, since_id=None, limit=None):
         """
         Fetches the public / visible-network timeline, not including replies.
 
         Returns a list of toot dicts.
         """
-        return self.timeline('public', max_id = max_id, since_id = since_id, limit = limit)
+        return self.timeline('public', max_id=max_id, since_id=since_id,
+                             limit=limit)
 
-    def timeline_hashtag(self, hashtag, max_id = None, since_id = None, limit = None):
+    def timeline_hashtag(self, hashtag, max_id=None, since_id=None, limit=None):
         """
         Fetch a timeline of toots with a given hashtag.
 
         Returns a list of toot dicts.
         """
-        return self.timeline('tag/' + str(hashtag), max_id = max_id, since_id = since_id, limit = limit)
+        url = 'tag/{0}'.format(str(hashtag))
+        return self.timeline(url, max_id=max_id, since_id=since_id, limit=limit)
 
     ###
     # Reading data: Statuses
@@ -282,7 +290,8 @@ class Mastodon:
 
         Returns a toot dict.
         """
-        return self.__api_request('GET', '/api/v1/statuses/' + str(id))
+        url = '/api/v1/statuses/{0}'.format(str(id))
+        return self.__api_request('GET', url)
 
     def status_card(self, id):
         """
@@ -291,7 +300,8 @@ class Mastodon:
 
         Returns a card dict.
         """
-        return self.__api_request('GET', '/api/v1/statuses/' + str(id) + '/card')
+        url = '/api/v1/statuses/{0}/card'.format(str(id))
+        return self.__api_request('GET', url)
 
     def status_context(self, id):
         """
@@ -299,7 +309,8 @@ class Mastodon:
 
         Returns a context dict.
         """
-        return self.__api_request('GET', '/api/v1/statuses/' + str(id) + '/context')
+        url = '/api/v1/statuses/{0}/context'.format(str(id))
+        return self.__api_request('GET', url)
 
     def status_reblogged_by(self, id):
         """
@@ -307,7 +318,8 @@ class Mastodon:
 
         Returns a list of user dicts.
         """
-        return self.__api_request('GET', '/api/v1/statuses/' + str(id) + '/reblogged_by')
+        url = '/api/v1/statuses/{0}/reblogged_by'.format(str(id))
+        return self.__api_request('GET', url)
 
     def status_favourited_by(self, id):
         """
@@ -315,12 +327,13 @@ class Mastodon:
 
         Returns a list of user dicts.
         """
-        return self.__api_request('GET', '/api/v1/statuses/' + str(id) + '/favourited_by')
+        url = '/api/v1/statuses/{0}/favourited_by'.format(str(id))
+        return self.__api_request('GET', url)
 
     ###
     # Reading data: Notifications
     ###
-    def notifications(self, id = None, max_id = None, since_id = None, limit = None):
+    def notifications(self, id=None, max_id=None, since_id=None, limit=None):
         """
         Fetch notifications (mentions, favourites, reblogs, follows) for the authenticated
         user.
@@ -329,11 +342,12 @@ class Mastodon:
 
         Returns a list of notification dicts.
         """
-        if id == None:
+        if id is None:
             params = self.__generate_params(locals(), ['id'])
             return self.__api_request('GET', '/api/v1/notifications', params)
         else:
-            return self.__api_request('GET', '/api/v1/notifications/' + str(id))
+            url = '/api/v1/notifications/{0}'.format(str(id))
+            return self.__api_request('GET', url)
 
     ###
     # Reading data: Accounts
@@ -344,7 +358,8 @@ class Mastodon:
 
         Returns a user dict.
         """
-        return self.__api_request('GET', '/api/v1/accounts/' + str(id))
+        url = '/api/v1/accounts/{0}'.format(str(id))
+        return self.__api_request('GET', url)
 
     def account_verify_credentials(self):
         """
@@ -354,32 +369,35 @@ class Mastodon:
         """
         return self.__api_request('GET', '/api/v1/accounts/verify_credentials')
 
-    def account_statuses(self, id, max_id = None, since_id = None, limit = None):
+    def account_statuses(self, id, max_id=None, since_id=None, limit=None):
         """
         Fetch statuses by user id. Same options as timeline are permitted.
 
         Returns a list of toot dicts.
         """
         params = self.__generate_params(locals(), ['id'])
-        return self.__api_request('GET', '/api/v1/accounts/' + str(id) + '/statuses', params)
+        url = '/api/v1/accounts/{0}/statuses'.format(str(id))
+        return self.__api_request('GET', url, params)
 
-    def account_following(self, id, max_id = None, since_id = None, limit = None):
+    def account_following(self, id, max_id=None, since_id=None, limit=None):
         """
         Fetch users the given user is following.
 
         Returns a list of user dicts.
         """
         params = self.__generate_params(locals(), ['id'])
-        return self.__api_request('GET', '/api/v1/accounts/' + str(id) + '/following', params)
+        url = '/api/v1/accounts/{0}/following'.format(str(id))
+        return self.__api_request('GET', url, params)
 
-    def account_followers(self, id, max_id = None, since_id = None, limit = None):
+    def account_followers(self, id, max_id=None, since_id=None, limit=None):
         """
         Fetch users the given user is followed by.
 
         Returns a list of user dicts.
         """
         params = self.__generate_params(locals(), ['id'])
-        return self.__api_request('GET', '/api/v1/accounts/' + str(id) + '/followers', params)
+        url = '/api/v1/accounts/{0}/followers'.format(str(id))
+        return self.__api_request('GET', url, params)
 
     def account_relationships(self, id):
         """
@@ -389,9 +407,10 @@ class Mastodon:
         Returns a list of relationship dicts.
         """
         params = self.__generate_params(locals())
-        return self.__api_request('GET', '/api/v1/accounts/relationships', params)
+        return self.__api_request('GET', '/api/v1/accounts/relationships',
+                                  params)
 
-    def account_search(self, q, limit = None):
+    def account_search(self, q, limit=None):
         """
         Fetch matching accounts. Will lookup an account remotely if the search term is
         in the username@domain format and not yet in the database.
@@ -404,7 +423,7 @@ class Mastodon:
     ###
     # Reading data: Searching
     ###
-    def search(self, q, resolve = False):
+    def search(self, q, resolve=False):
         """
         Fetch matching hashtags, accounts and statuses. Will search federated
         instances if resolve is True.
@@ -417,7 +436,7 @@ class Mastodon:
     ###
     # Reading data: Mutes and Blocks
     ###
-    def mutes(self, max_id = None, since_id = None, limit = None):
+    def mutes(self, max_id=None, since_id=None, limit=None):
         """
         Fetch a list of users muted by the authenticated user.
 
@@ -426,7 +445,7 @@ class Mastodon:
         params = self.__generate_params(locals())
         return self.__api_request('GET', '/api/v1/mutes', params)
 
-    def blocks(self, max_id = None, since_id = None, limit = None):
+    def blocks(self, max_id=None, since_id=None, limit=None):
         """
         Fetch a list of users blocked by the authenticated user.
 
@@ -449,7 +468,7 @@ class Mastodon:
     ###
     # Reading data: Favourites
     ###
-    def favourites(self, max_id = None, since_id = None, limit = None):
+    def favourites(self, max_id=None, since_id=None, limit=None):
         """
         Fetch the authenticated user's favourited statuses.
 
@@ -461,7 +480,7 @@ class Mastodon:
     ###
     # Reading data: Follow requests
     ###
-    def follow_requests(self, max_id = None, since_id = None, limit = None):
+    def follow_requests(self, max_id=None, since_id=None, limit=None):
         """
         Fetch the authenticated user's incoming follow requests.
 
@@ -473,7 +492,7 @@ class Mastodon:
     ###
     # Reading data: Domain blocks
     ###
-    def domain_blocks(self, max_id = None, since_id = None, limit = None):
+    def domain_blocks(self, max_id=None, since_id=None, limit=None):
         """
         Fetch the authenticated user's blocked domains.
 
@@ -481,11 +500,12 @@ class Mastodon:
         """
         params = self.__generate_params(locals())
         return self.__api_request('GET', '/api/v1/domain_blocks', params)
-    
+
     ###
     # Writing data: Statuses
     ###
-    def status_post(self, status, in_reply_to_id = None, media_ids = None, sensitive = False, visibility = '', spoiler_text = None):
+    def status_post(self, status, in_reply_to_id=None, media_ids=None,
+                    sensitive=False, visibility='', spoiler_text=None):
         """
         Post a status. Can optionally be in reply to another status and contain
         up to four pieces of media (Uploaded via media_post()). media_ids can
@@ -519,10 +539,10 @@ class Mastodon:
         if params_initial['visibility'].lower() not in valid_visibilities:
             raise ValueError('Invalid visibility value! Acceptable values are %s' % valid_visibilities)
 
-        if params_initial['sensitive'] == False:
-            del[params_initial['sensitive']]
+        if params_initial['sensitive'] is False:
+            del [params_initial['sensitive']]
 
-        if media_ids != None:
+        if media_ids is not None:
             try:
                 media_ids_proper = []
                 for media_id in media_ids:
@@ -552,14 +572,16 @@ class Mastodon:
 
         Returns an empty dict for good measure.
         """
-        return self.__api_request('DELETE', '/api/v1/statuses/' + str(id))
+        url = '/api/v1/statuses/{0}'.format(str(id))
+        return self.__api_request('DELETE', url)
 
     def status_reblog(self, id):
         """Reblog a status.
 
         Returns a toot with with a new status that wraps around the reblogged one.
         """
-        return self.__api_request('POST', '/api/v1/statuses/' + str(id) + "/reblog")
+        url = '/api/v1/statuses/{0}/reblog'.format(str(id))
+        return self.__api_request('POST', url)
 
     def status_unreblog(self, id):
         """
@@ -567,7 +589,8 @@ class Mastodon:
 
         Returns a toot dict with the status that used to be reblogged.
         """
-        return self.__api_request('POST', '/api/v1/statuses/' + str(id) + "/unreblog")
+        url = '/api/v1/statuses/{0}/unreblog'.format(str(id))
+        return self.__api_request('POST', url)
 
     def status_favourite(self, id):
         """
@@ -575,7 +598,8 @@ class Mastodon:
 
         Returns a toot dict with the favourited status.
         """
-        return self.__api_request('POST', '/api/v1/statuses/' + str(id) + "/favourite")
+        url = '/api/v1/statuses/{0}/favourite'.format(str(id))
+        return self.__api_request('POST', url)
 
     def status_unfavourite(self, id):
         """
@@ -583,7 +607,8 @@ class Mastodon:
 
         Returns a toot dict with the un-favourited status.
         """
-        return self.__api_request('POST', '/api/v1/statuses/' + str(id) + "/unfavourite")
+        url = '/api/v1/statuses/{0}/unfavourite'.format(str(id))
+        return self.__api_request('POST', url)
 
     ###
     # Writing data: Notifications
@@ -603,7 +628,8 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/follow")
+        url = '/api/v1/accounts/{0}/follow'.format(str(id))
+        return self.__api_request('POST', url)
 
     def follows(self, uri):
         """
@@ -620,7 +646,8 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/unfollow")
+        url = '/api/v1/accounts/{0}/unfollow'.format(str(id))
+        return self.__api_request('POST', url)
 
     def account_block(self, id):
         """
@@ -628,7 +655,8 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/block")
+        url = '/api/v1/accounts/{0}/block'.format(str(id))
+        return self.__api_request('POST', url)
 
     def account_unblock(self, id):
         """
@@ -636,7 +664,8 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/unblock")
+        url = '/api/v1/accounts/{0}/unblock'.format(str(id))
+        return self.__api_request('POST', url)
 
     def account_mute(self, id):
         """
@@ -644,7 +673,8 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/mute")
+        url = '/api/v1/accounts/{0}/mute'.format(str(id))
+        return self.__api_request('POST', url)
 
     def account_unmute(self, id):
         """
@@ -652,9 +682,11 @@ class Mastodon:
 
         Returns a relationship dict containing the updated relationship to the user.
         """
-        return self.__api_request('POST', '/api/v1/accounts/' + str(id) + "/unmute")
+        url = '/api/v1/accounts/{0}/unmute'.format(str(id))
+        return self.__api_request('POST', url)
 
-    def account_update_credentials(self, display_name = None, note = None, avatar = None, header = None):
+    def account_update_credentials(self, display_name=None, note=None,
+                                   avatar=None, header=None):
         """
         Update the profile for the currently authenticated user.
 
@@ -689,7 +721,8 @@ class Mastodon:
 
         Returns an empty dict.
         """
-        return self.__api_request('POST', '/api/v1/follow_requests/' + str(id) + "/authorize")
+        url = '/api/v1/follow_requests/{0}/authorize'.format(str(id))
+        return self.__api_request('POST', url)
 
     def follow_request_reject(self, id):
         """
@@ -697,12 +730,13 @@ class Mastodon:
 
         Returns an empty dict.
         """
-        return self.__api_request('POST', '/api/v1/follow_requests/' + str(id) + "/reject")
+        url = '/api/v1/follow_requests/{0}/reject'.format(str(id))
+        return self.__api_request('POST', url)
 
     ###
     # Writing data: Media
     ###
-    def media_post(self, media_file, mime_type = None):
+    def media_post(self, media_file, mime_type=None):
         """
         Post an image. media_file can either be image data or
         a file name. If image data is passed directly, the mime
@@ -715,45 +749,48 @@ class Mastodon:
         Returns a media dict. This contains the id that can be used in
         status_post to attach the media file to a toot.
         """
-        if mime_type == None and os.path.isfile(media_file):
+        if mime_type is None and os.path.isfile(media_file):
             mime_type = mimetypes.guess_type(media_file)[0]
             media_file = open(media_file, 'rb')
 
-        if mime_type == None:
-            raise MastodonIllegalArgumentError('Could not determine mime type or data passed directly without mime type.')
+        if mime_type is None:
+            raise MastodonIllegalArgumentError(
+                'Could not determine mime type or data passed directly without mime type.')
 
         random_suffix = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(10))
-        file_name = "mastodonpyupload_" + str(time.time()) + "_" + str(random_suffix) + mimetypes.guess_extension(mime_type)
+        file_name = "mastodonpyupload_" + str(time.time()) + "_" + str(random_suffix) + mimetypes.guess_extension(
+            mime_type)
 
         media_file_description = (file_name, media_file, mime_type)
-        return self.__api_request('POST', '/api/v1/media', files = {'file': media_file_description})
+        return self.__api_request('POST', '/api/v1/media',
+                                  files={'file': media_file_description})
 
     ###
     # Writing data: Domain blocks
     ###
-    def domain_block(self, domain = None):
+    def domain_block(self, domain=None):
         """
         Add a block for all statuses originating from the specified domain for the logged-in user.
         """
         params = self.__generate_params(locals())
         return self.__api_request('POST', '/api/v1/domain_blocks', params)
-    
-    def domain_unblock(self, domain = None):
+
+    def domain_unblock(self, domain=None):
         """
         Remove a domain block for the logged-in user.
         """
         params = self.__generate_params(locals())
         return self.__api_request('DELETE', '/api/v1/domain_blocks', params)
-    
+
     ###
     # Pagination
     ###
     def fetch_next(self, previous_page):
         """
         Fetches the next page of results of a paginated request. Pass in the
-        previous page in its entirety, or the pagination information dict 
+        previous page in its entirety, or the pagination information dict
         returned as a part of that pages last status ('_pagination_next').
-        
+
         Returns the next page or None if no further data is available.
         """
         if isinstance(previous_page, list):
@@ -763,21 +800,21 @@ class Mastodon:
                 return None
         else:
             params = copy.deepcopy(previous_page)
-        
+
         method = params['_pagination_method']
         del params['_pagination_method']
-        
+
         endpoint = params['_pagination_endpoint']
         del params['_pagination_endpoint']
-        
+
         return self.__api_request(method, endpoint, params)
-    
+
     def fetch_previous(self, next_page):
         """
         Fetches the previous page of results of a paginated request. Pass in the
-        previous page in its entirety, or the pagination information dict 
+        previous page in its entirety, or the pagination information dict
         returned as a part of that pages first status ('_pagination_prev').
-        
+
         Returns the previous page or None if no further data is available.
         """
         if isinstance(next_page, list):
@@ -787,34 +824,34 @@ class Mastodon:
                 return None
         else:
             params = copy.deepcopy(next_page)
-        
+
         method = params['_pagination_method']
         del params['_pagination_method']
-        
+
         endpoint = params['_pagination_endpoint']
         del params['_pagination_endpoint']
-        
+
         return self.__api_request(method, endpoint, params)
-    
+
     def fetch_remaining(self, first_page):
         """
-        Fetches all the remaining pages of a paginated request starting from a 
+        Fetches all the remaining pages of a paginated request starting from a
         first page and returns the entire set of results (including the first page
         that was passed in) as a big list.
-        
+
         Be careful, as this might generate a lot of requests, depending on what you are
         fetching, and might cause you to run into rate limits very quickly.
         """
         first_page = copy.deepcopy(first_page)
-        
+
         all_pages = []
         current_page = first_page
-        while current_page != None and len(current_page) > 0:
+        while current_page is not None and len(current_page) > 0:
             all_pages.extend(current_page)
             current_page = self.fetch_next(current_page)
-            
+
         return all_pages
-    
+
     ###
     # Streaming
     ###
@@ -858,7 +895,7 @@ class Mastodon:
         incoming events.
         """
         return self.__stream("/api/v1/streaming/hashtag?tag={}".format(tag), listener)
-    
+
     ###
     # Internal helpers, dragons probably
     ###
@@ -870,22 +907,22 @@ class Mastodon:
         Assumes UTC if timezone is not given.
         """
         date_time_utc = None
-        if date_time.tzinfo == None:
-            date_time_utc = date_time.replace(tzinfo = pytz.utc)
+        if date_time.tzinfo is None:
+            date_time_utc = date_time.replace(tzinfo=pytz.utc)
         else:
             date_time_utc = date_time.astimezone(pytz.utc)
 
-        epoch_utc = datetime.datetime.utcfromtimestamp(0).replace(tzinfo = pytz.utc)
+        epoch_utc = datetime.datetime.utcfromtimestamp(0).replace(tzinfo=pytz.utc)
 
         return (date_time_utc - epoch_utc).total_seconds()
 
-    def __api_request(self, method, endpoint, params = {}, files = {}, do_ratelimiting = True):
+    def __api_request(self, method, endpoint, params={}, files={}, do_ratelimiting=True):
         """
         Internal API request helper.
         """
         response = None
         headers = None
-
+        remaining_wait = 0
         # "pace" mode ratelimiting: Assume constant rate of requests, sleep a little less long than it
         # would take to not hit the rate limit at that request rate.
         if do_ratelimiting and self.ratelimit_method == "pace":
@@ -906,10 +943,10 @@ class Mastodon:
                 time.sleep(to_next)
 
         # Generate request headers
-        if self.access_token != None:
+        if self.access_token is not None:
             headers = {'Authorization': 'Bearer ' + self.access_token}
 
-        if self.debug_requests == True:
+        if self.debug_requests:
             print('Mastodon: Request to endpoint "' + endpoint + '" using method "' + method + '".')
             print('Parameters: ' + str(params))
             print('Headers: ' + str(headers))
@@ -923,24 +960,28 @@ class Mastodon:
             response_object = None
             try:
                 if method == 'GET':
-                    response_object = requests.get(self.api_base_url + endpoint, data = params, headers = headers, files = files, timeout = self.request_timeout)
+                    response_object = requests.get(self.api_base_url + endpoint, data=params, headers=headers,
+                                                   files=files, timeout=self.request_timeout)
 
                 if method == 'POST':
-                    response_object = requests.post(self.api_base_url + endpoint, data = params, headers = headers, files = files, timeout = self.request_timeout)
+                    response_object = requests.post(self.api_base_url + endpoint, data=params, headers=headers,
+                                                    files=files, timeout=self.request_timeout)
 
                 if method == 'PATCH':
-                    response_object = requests.patch(self.api_base_url + endpoint, data = params, headers = headers, files = files, timeout = self.request_timeout)
+                    response_object = requests.patch(self.api_base_url + endpoint, data=params, headers=headers,
+                                                     files=files, timeout=self.request_timeout)
 
                 if method == 'DELETE':
-                    response_object = requests.delete(self.api_base_url + endpoint, data = params, headers = headers, files = files, timeout = self.request_timeout)
+                    response_object = requests.delete(self.api_base_url + endpoint, data=params, headers=headers,
+                                                      files=files, timeout=self.request_timeout)
             except Exception as e:
                 raise MastodonNetworkError("Could not complete request: %s" % e)
 
-            if response_object == None:
+            if response_object is None:
                 raise MastodonIllegalArgumentError("Illegal request.")
 
             # Handle response
-            if self.debug_requests == True:
+            if self.debug_requests:
                 print('Mastodon: Response received with code ' + str(response_object.status_code) + '.')
                 print('response headers: ' + str(response_object.headers))
                 print('Response text content: ' + str(response_object.text))
@@ -954,20 +995,25 @@ class Mastodon:
             try:
                 response = response_object.json()
             except:
-                raise MastodonAPIError("Could not parse response as JSON, response code was %s, bad json content was '%s'" % (response_object.status_code, response_object.content))
+                raise MastodonAPIError(
+                    "Could not parse response as JSON, response code was %s, bad json content was '%s'" % (
+                    response_object.status_code, response_object.content))
 
             # Parse link headers
-            if isinstance(response, list) and 'Link' in response_object.headers and response_object.headers['Link'] != "":
-                tmp_urls = requests.utils.parse_header_links(response_object.headers['Link'].rstrip('>').replace('>,<', ',<'))   
+            if isinstance(response, list) and \
+                    'Link' in response_object.headers and \
+                    response_object.headers['Link'] != "":
+                tmp_urls = requests.utils.parse_header_links(
+                    response_object.headers['Link'].rstrip('>').replace('>,<', ',<'))
                 for url in tmp_urls:
                     if not 'rel' in url:
                         continue
-                    
+
                     if url['rel'] == 'next':
                         # Be paranoid and extract max_id specifically
                         next_url = url['url']
                         matchgroups = re.search(r"max_id=([0-9]*)", next_url)
-                        
+
                         if matchgroups:
                             next_params = copy.deepcopy(params)
                             next_params['_pagination_method'] = method
@@ -976,12 +1022,12 @@ class Mastodon:
                             if "since_id" in next_params:
                                 del next_params['since_id']
                             response[-1]['_pagination_next'] = next_params
-                            
+
                     if url['rel'] == 'prev':
                         # Be paranoid and extract since_id specifically
                         prev_url = url['url']
                         matchgroups = re.search(r"since_id=([0-9]*)", prev_url)
-                        
+
                         if matchgroups:
                             prev_params = copy.deepcopy(params)
                             prev_params['_pagination_method'] = method
@@ -990,7 +1036,7 @@ class Mastodon:
                             if "max_id" in prev_params:
                                 del prev_params['max_id']
                             response[0]['_pagination_prev'] = prev_params
-                
+
             # Handle rate limiting
             if 'X-RateLimit-Remaining' in response_object.headers and do_ratelimiting:
                 self.ratelimit_remaining = int(response_object.headers['X-RateLimit-Remaining'])
@@ -1024,21 +1070,20 @@ class Mastodon:
 
         return response
 
-    def __stream(self, endpoint, listener, params = {}):
+    def __stream(self, endpoint, listener, params={}):
         """
         Internal streaming API helper.
         """
 
         headers = {}
-        if self.access_token != None:
+        if self.access_token is not None:
             headers = {'Authorization': 'Bearer ' + self.access_token}
 
         url = self.api_base_url + endpoint
-        with closing(requests.get(url, headers = headers, data = params, stream = True)) as r:
+        with closing(requests.get(url, headers=headers, data=params, stream=True)) as r:
             listener.handle_stream(r.iter_lines())
 
-
-    def __generate_params(self, params, exclude = []):
+    def __generate_params(self, params, exclude=[]):
         """
         Internal named-parameters-to-dict helper.
 
@@ -1052,7 +1097,7 @@ class Mastodon:
         del params['self']
         param_keys = list(params.keys())
         for key in param_keys:
-            if params[key] == None or key in exclude:
+            if params[key] is None or key in exclude:
                 del params[key]
 
         param_keys = list(params.keys())
@@ -1063,28 +1108,24 @@ class Mastodon:
 
         return params
 
-
     def __get_token_expired(self):
         """Internal helper for oauth code"""
-        if self._token_expired < datetime.datetime.now():
-            return True
-        else:
-            return False
+        return self._token_expired < datetime.datetime.now()
 
     def __set_token_expired(self, value):
         """Internal helper for oauth code"""
         self._token_expired = datetime.datetime.now() + datetime.timedelta(seconds=value)
         return
-    
+
     def __get_refresh_token(self):
         """Internal helper for oauth code"""
         return self._refresh_token
-        
+
     def __set_refresh_token(self, value):
         """Internal helper for oauth code"""
         self._refresh_token = value
         return
-    
+
     @staticmethod
     def __protocolize(base_url):
         """Internal add-protocol-to-url helper"""
@@ -1095,21 +1136,25 @@ class Mastodon:
         base_url = base_url.rstrip("/")
         return base_url
 
+
 ##
 # Exceptions
 ##
 class MastodonIllegalArgumentError(ValueError):
     pass
 
+
 class MastodonFileNotFoundError(IOError):
     pass
 
+
 class MastodonNetworkError(IOError):
     pass
 
+
 class MastodonAPIError(Exception):
     pass
 
+
 class MastodonRatelimitError(Exception):
     pass
-
diff --git a/mastodon/streaming.py b/mastodon/streaming.py
index 3212848..290ed44 100644
--- a/mastodon/streaming.py
+++ b/mastodon/streaming.py
@@ -1,7 +1,7 @@
-'''
+"""
 Handlers for the Streaming API:
 https://github.com/tootsuite/mastodon/blob/master/docs/Using-the-API/Streaming-API.md
-'''
+"""
 
 import json
 import logging
@@ -12,43 +12,43 @@ log = logging.getLogger(__name__)
 
 
 class MalformedEventError(Exception):
-    '''Raised when the server-sent event stream is malformed.'''
+    """Raised when the server-sent event stream is malformed."""
     pass
 
 
 class StreamListener(object):
-    '''Callbacks for the streaming API. Create a subclass, override the on_xxx
+    """Callbacks for the streaming API. Create a subclass, override the on_xxx
     methods for the kinds of events you're interested in, then pass an instance
     of your subclass to Mastodon.user_stream(), Mastodon.public_stream(), or
-    Mastodon.hashtag_stream().'''
+    Mastodon.hashtag_stream()."""
 
     def on_update(self, status):
-        '''A new status has appeared! 'status' is the parsed JSON dictionary
-        describing the status.'''
+        """A new status has appeared! 'status' is the parsed JSON dictionary
+describing the status."""
         pass
 
     def on_notification(self, notification):
-        '''A new notification. 'notification' is the parsed JSON dictionary
-        describing the notification.'''
+        """A new notification. 'notification' is the parsed JSON dictionary
+        describing the notification."""
         pass
 
     def on_delete(self, status_id):
-        '''A status has been deleted. status_id is the status' integer ID.'''
+        """A status has been deleted. status_id is the status' integer ID."""
         pass
 
     def handle_heartbeat(self):
-        '''The server has sent us a keep-alive message. This callback may be
+        """The server has sent us a keep-alive message. This callback may be
         useful to carry out periodic housekeeping tasks, or just to confirm
-        that the connection is still open.'''
+        that the connection is still open."""
 
     def handle_stream(self, lines):
-        '''
+        """
         Handles a stream of events from the Mastodon server. When each event
         is received, the corresponding .on_[name]() method is called.
 
         lines: an iterable of lines of bytes sent by the Mastodon server, as
         returned by requests.Response.iter_lines().
-        '''
+        """
         event = {}
         for raw_line in lines:
             try:
@@ -104,4 +104,3 @@ class StreamListener(object):
         else:
             # TODO: allow handlers to return/raise to stop streaming cleanly
             handler(payload)
-
diff --git a/setup.py b/setup.py
index 20c1bf1..0ebf236 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-from setuptools import setup, find_packages
+from setuptools import setup
 
 setup(name='Mastodon.py',
       version='1.0.8',
@@ -6,7 +6,7 @@ setup(name='Mastodon.py',
       packages=['mastodon'],
       setup_requires=['pytest-runner'],
       tests_require=['pytest'],
-      install_requires=['requests', 'python-dateutil', 'six'],
+      install_requires=['requests', 'python-dateutil', 'six', 'pytz'],
       url='https://github.com/halcy/Mastodon.py',
       author='Lorenz Diener',
       author_email='lorenzd+mastodonpypypi@gmail.com',
@@ -19,5 +19,4 @@ setup(name='Mastodon.py',
           'License :: OSI Approved :: MIT License',
           'Programming Language :: Python :: 2',
           'Programming Language :: Python :: 3',
-      ]
-)
+      ])
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_streaming.py b/tests/test_streaming.py
index c79a8e9..1f8d75f 100644
--- a/tests/test_streaming.py
+++ b/tests/test_streaming.py
@@ -24,9 +24,10 @@ class Listener(StreamListener):
         self.heartbeats += 1
 
     def handle_stream_(self, lines):
-        '''Test helper to avoid littering all tests with six.b().'''
+        """Test helper to avoid littering all tests with six.b()."""
         return self.handle_stream(map(six.b, lines))
 
+
 def test_heartbeat():
     listener = Listener()
     listener.handle_stream_([':one', ':two'])
@@ -85,7 +86,7 @@ def test_many(events):
 
 
 def test_unknown_event():
-    '''Be tolerant of new event types'''
+    """Be tolerant of new event types"""
     listener = Listener()
     listener.handle_stream_([
         'event: blahblah',
@@ -137,11 +138,11 @@ def test_sse_order_doesnt_matter():
 
 
 def test_extra_keys_ignored():
-    '''
+    """
     https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format
     defines 'id' and 'retry' keys which the Mastodon streaming API doesn't use,
     and alleges that "All other field names are ignored".
-    '''
+    """
     listener = Listener()
     listener.handle_stream_([
         'event: update',
@@ -155,7 +156,7 @@ def test_extra_keys_ignored():
 
 
 def test_valid_utf8():
-    '''Snowman Cat Face With Tears Of Joy'''
+    """Snowman Cat Face With Tears Of Joy"""
     listener = Listener()
     listener.handle_stream_([
         'event: update',
@@ -166,7 +167,7 @@ def test_valid_utf8():
 
 
 def test_invalid_utf8():
-    '''Cat Face With Tears O'''
+    """Cat Face With Tears O"""
     listener = Listener()
     with pytest.raises(MalformedEventError):
         listener.handle_stream_([
@@ -177,13 +178,13 @@ def test_invalid_utf8():
 
 
 def test_multiline_payload():
-    '''
+    """
     https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Data-only_messages
     says that newlines in the 'data' field can be encoded by sending the field
     twice! This would be really pathological for Mastodon because the payload
     is JSON, but technically literal newlines are permissible (outside strings)
     so let's handle this case.
-    '''
+    """
     listener = Listener()
     listener.handle_stream_([
         'event: update',