Add new tox env: flake8

.travis.yml

@@ -18,6 +18,7 @@ env:
   - TOX_ENV=system-tests
   - TOX_ENV=system-tests3
   - TOX_ENV=gae
+  - TOX_ENV=flake8
   global:
   - GAE_PYTHONPATH=${HOME}/.cache/google_appengine
 cache:

tox.ini

@@ -154,3 +154,20 @@ commands =
 deps =
     pycrypto>=2.6
 passenv = {[testenv:system-tests]passenv}
+
+[testenv:flake8]
+commands = flake8 {posargs}
+deps = flake8-putty
+
+[flake8]
+exclude = .tox,.git,./*.egg,build,
+putty-ignore =
+  # E402 module level import not at top of file
+  # These files have needed configurations defined before import
+  docs/conf.py : E402
+  tests/contrib/test_appengine.py : E402
+  tests/contrib/test_django_orm.py : E402
+  # E501 line too long
+  # Ignore lines over 80 chars that include "http:" or "https:"
+  /http:/ : E501
+  /https:/ : E501