diff --git a/.flake8 b/.flake8
new file mode 100644
index 00000000..61d90815
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 99
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..872dcaf6
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+language: python
+python:
+  - "3.6"
+install:
+  - "pip install -r requirements.txt"
+  - "pip install flake8"
+script: flake8
diff --git a/chaos.py b/chaos.py
index e0740ed6..d6a3c3c7 100644
--- a/chaos.py
+++ b/chaos.py
@@ -6,11 +6,8 @@
 import time
 import sys
 import logging
-import threading
-import http.server
 import subprocess
 import settings
-import patch
 import schedule
 import cron
 import github_api as gh
@@ -20,15 +17,14 @@
 import github_api.comments
 
 # Has a sideeffect of creating private key if one doesn't exist already
-import encryption
-
-from github_api import exceptions as gh_exc
+# Currently imported just for the sideeffect (not currently being used)
+import encryption  # noqa: F401
 
 
 def main():
     logging.basicConfig(level=logging.DEBUG,
-        format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
-        datefmt='%m-%d %H:%M')
+                        format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
+                        datefmt='%m-%d %H:%M')
     logging.getLogger("requests").propagate = False
     logging.getLogger("sh").propagate = False
 
diff --git a/github_api/__init__.py b/github_api/__init__.py
index 9392b472..d83da816 100644
--- a/github_api/__init__.py
+++ b/github_api/__init__.py
@@ -2,7 +2,6 @@
 import re
 import math
 import requests
-import json
 from requests.auth import HTTPBasicAuth
 import logging
 
@@ -25,7 +24,7 @@ class API(object):
 
     BASE_URL = "https://api.github.com"
     BASE_HEADERS = {
-        #"Accept": "application/vnd.github.v3+json"
+        # "Accept": "application/vnd.github.v3+json"
         # so we have access to the reactions api
         "Accept": "application/vnd.github.squirrel-girl-preview+json"
     }
diff --git a/github_api/comments.py b/github_api/comments.py
index 53196e29..7e3aa7d4 100644
--- a/github_api/comments.py
+++ b/github_api/comments.py
@@ -1,4 +1,3 @@
-import arrow
 import settings
 from . import prs
 
diff --git a/github_api/prs.py b/github_api/prs.py
index be975870..2892affc 100644
--- a/github_api/prs.py
+++ b/github_api/prs.py
@@ -1,5 +1,6 @@
 import arrow
 import settings
+from requests import HTTPError
 from . import misc
 from . import voting
 from . import comments
@@ -71,8 +72,9 @@ def formatted_votes_summary(votes, total, threshold):
     vfor = sum(v for v in votes.values() if v > 0)
     vagainst = abs(sum(v for v in votes.values() if v < 0))
 
-    return "with a vote of {vfor} for and {vagainst} against, with a weighted total of {total:.1f} and a threshold of {threshold:.1f}" \
-        .strip().format(vfor=vfor, vagainst=vagainst, total=total, threshold=threshold)
+    return ("with a vote of {vfor} for and {vagainst} against, with a weighted total \
+            of {total:.1f} and a threshold of {threshold:.1f}"
+            .strip().format(vfor=vfor, vagainst=vagainst, total=total, threshold=threshold))
 
 
 def formatted_votes_short_summary(votes, total, threshold):
@@ -89,7 +91,7 @@ def label_pr(api, urn, pr_num, labels):
         labels = [labels]
     path = "/repos/{urn}/issues/{pr}/labels".format(urn=urn, pr=pr_num)
     data = labels
-    resp = api("PUT", path, json=data)
+    return api("PUT", path, json=data)
 
 
 def close_pr(api, urn, pr):
diff --git a/github_api/repos.py b/github_api/repos.py
index 51a0bf96..5f25abd9 100644
--- a/github_api/repos.py
+++ b/github_api/repos.py
@@ -1,5 +1,6 @@
 import settings
 
+
 def get_num_watchers(api, urn):
     """ returns the number of watchers for a repo """
     path = "/repos/{urn}".format(urn=urn)
diff --git a/github_api/users.py b/github_api/users.py
index d3801774..d58d5d3e 100644
--- a/github_api/users.py
+++ b/github_api/users.py
@@ -1,10 +1,9 @@
 
 def get_user(api, user):
     path = "/users/{user}".format(user=user)
-    data = api("get", path)
-    return data
+    return api("get", path)
 
 
 def follow_user(api, user):
     follow_path = "/user/following/{user}".format(user=user)
-    follow_resp = api("PUT", follow_path)
+    return api("PUT", follow_path)
diff --git a/github_api/voting.py b/github_api/voting.py
index 6899f203..50e77e0b 100644
--- a/github_api/voting.py
+++ b/github_api/voting.py
@@ -1,6 +1,4 @@
-from math import log
 import arrow
-import re
 from emoji import demojize
 
 from . import prs
diff --git a/memoize/__init__.py b/memoize/__init__.py
index 7d6fbd07..d6d1da59 100644
--- a/memoize/__init__.py
+++ b/memoize/__init__.py
@@ -1 +1,3 @@
 from .decorator import memoize
+
+__all__ = ["memoize"]
diff --git a/misc.py b/misc.py
index de7ed7a1..1a768654 100644
--- a/misc.py
+++ b/misc.py
@@ -1,13 +1,14 @@
-import re
 import sh
 from urllib.parse import urlparse
 
+
 def removeDotGit(url):
     """ Remove trailing `.git` from the git remote url """
     if url.endswith('.git'):
         return url[:-4]
     return url
 
+
 def get_self_urn():
     """ determine the URN for the repo on github by looking at the remote named
     "origin", and parsing it, or using a sensible default.  this will allow
@@ -33,4 +34,3 @@ def get_self_urn():
         urn = "chaosbot/chaos"
 
     return urn
-
diff --git a/patch.py b/patch.py
index 6d34b2ac..e1698b34 100644
--- a/patch.py
+++ b/patch.py
@@ -15,12 +15,14 @@
 import github_api.voting
 import github_api.repos
 
+
 def decorate(fn, dec):
     """helper for monkey-patch-decorating functions in different modules"""
     mod = inspect.getmodule(fn)
     new_fn = dec(fn)
     setattr(mod, fn.__name__, new_fn)
 
+
 cache_dir = join(dirname(abspath(__file__)), settings.MEMOIZE_CACHE_DIRNAME)
 api_memoize = partial(memoize, blacklist={"api"}, backend=json_backend(cache_dir))
 
diff --git a/redditchaosbot.py b/redditchaosbot.py
index 8a16f888..4876561e 100755
--- a/redditchaosbot.py
+++ b/redditchaosbot.py
@@ -2,8 +2,6 @@
 # -*- coding: utf-8 -*-
 
 import praw
-import pprint
-from praw.models import MoreComments
 
 
 '''Authenticated instance of Reddit'''
diff --git a/server/server.py b/server/server.py
index 1f3149a7..c462eb20 100644
--- a/server/server.py
+++ b/server/server.py
@@ -5,6 +5,7 @@
 import socketserver
 import socket
 
+
 def set_proc_name(newname):
     """Change the process name using libc.so.6"""
     from ctypes import cdll, byref, create_string_buffer
@@ -36,5 +37,6 @@ def main():
     # serve HTTP on port 80
     httpd.serve_forever()
 
+
 if __name__ == "__main__":
     main()