diff --git a/bots/jabber_mirror_backend.py b/bots/jabber_mirror_backend.py
index 2a1bc05..0ad3ed2 100755
--- a/bots/jabber_mirror_backend.py
+++ b/bots/jabber_mirror_backend.py
@@ -381,7 +381,8 @@ option does not affect login credentials.'''.replace("\n", " "))
             config.readfp(f, config_file)
     except IOError:
         pass
-    for option in ("jid", "jabber_password", "conference_domain", "mode", "zulip_email_suffix", "jabber_server_address", "jabber_server_port"):
+    for option in ("jid", "jabber_password", "conference_domain", "mode", "zulip_email_suffix",
+                   "jabber_server_address", "jabber_server_port"):
         if (getattr(options, option) is None
             and config.has_option("jabber_mirror", option)):
             setattr(options, option, config.get("jabber_mirror", option))
diff --git a/integrations/codebase/zulip_codebase_mirror b/integrations/codebase/zulip_codebase_mirror
index cf32137..b344566 100755
--- a/integrations/codebase/zulip_codebase_mirror
+++ b/integrations/codebase/zulip_codebase_mirror
@@ -208,7 +208,8 @@ def handle_event(event):
             subject = "Discussion: %s" % (subj,)
 
             if category:
-                content = "%s started a new discussion in %s:\n\n~~~ quote\n%s\n~~~" % (actor_name, category, comment_content)
+                format_str = "%s started a new discussion in %s:\n\n~~~ quote\n%s\n~~~"
+                content = format_str % (actor_name, category, comment_content)
             else:
                 content = "%s posted:\n\n~~~ quote\n%s\n~~~" % (actor_name, comment_content)
 
@@ -223,7 +224,8 @@ def handle_event(event):
 
         start_ref_url = make_url("projects/%s/repositories/%s/commit/%s" % (project_link, repo_link, start_ref))
         end_ref_url = make_url("projects/%s/repositories/%s/commit/%s" % (project_link, repo_link, end_ref))
-        between_url = make_url("projects/%s/repositories/%s/compare/%s...%s" % (project_link, repo_link, start_ref, end_ref))
+        between_url = make_url("projects/%s/repositories/%s/compare/%s...%s" % (
+            project_link, repo_link, start_ref, end_ref))
 
         subject = "Deployment to %s" % (environment,)
 
diff --git a/integrations/twitter/twitter-bot b/integrations/twitter/twitter-bot
index aaecbeb..3adc0eb 100755
--- a/integrations/twitter/twitter-bot
+++ b/integrations/twitter/twitter-bot
@@ -45,11 +45,12 @@ parser = optparse.OptionParser(r"""
 
     Slurp tweets on your timeline into a specific zulip stream.
 
-    Run this on your personal machine.  Your API key and twitter id are revealed to local
-    users through the command line or config file.
+    Run this on your personal machine.  Your API key and twitter id
+    are revealed to local users through the command line or config
+    file.
 
-    This bot uses OAuth to authenticate with twitter. Please create a ~/.zulip_twitterrc with
-    the following contents:
+    This bot uses OAuth to authenticate with twitter. Please create a
+    ~/.zulip_twitterrc with the following contents:
 
     [twitter]
     consumer_key =
@@ -57,14 +58,16 @@ parser = optparse.OptionParser(r"""
     access_token_key =
     access_token_secret =
 
-    In order to obtain a consumer key & secret, you must register a new application under your twitter account:
+    In order to obtain a consumer key & secret, you must register a
+    new application under your twitter account:
 
     1. Go to http://dev.twitter.com
     2. Log in
     3. In the menu under your username, click My Applications
     4. Create a new application
 
-    Make sure to go the application you created and click "create my access token" as well. Fill in the values displayed.
+    Make sure to go the application you created and click "create my
+    access token" as well.  Fill in the values displayed.
 
     Depends on: twitter-python
 """)
diff --git a/zulip/__init__.py b/zulip/__init__.py
index 12dade9..cbff8c2 100644
--- a/zulip/__init__.py
+++ b/zulip/__init__.py
@@ -150,7 +150,8 @@ def get_default_config_filename():
     config_file = os.path.join(os.environ["HOME"], ".zuliprc")
     if (not os.path.exists(config_file) and
         os.path.exists(os.path.join(os.environ["HOME"], ".humbugrc"))):
-        raise RuntimeError("The Zulip API configuration file is now ~/.zuliprc; please run:\n\n  mv ~/.humbugrc ~/.zuliprc\n")
+        raise RuntimeError("The Zulip API configuration file is now ~/.zuliprc; please run:\n\n"
+                           "  mv ~/.humbugrc ~/.zuliprc\n")
     return config_file
 
 class Client(object):