Add a linters tox environment

The linters tox environment will run yamllint and flake8.

Also fix a few trivial issues so the new target passes

Change-Id: Ifa1e9379f7d1d1996f2cfb84233bce8b502979bb

events.yaml

@@ -1,3 +1,4 @@
+---
 - {'date': '2016-09-12T00:00', 'name': 'PTL nomination starts'}
 - {'date': '2016-09-18T23:45', 'name': 'PTL nomination ends'}
 - {'date': '2016-09-19T00:00', 'name': 'PTL elections begins'}

test-requirements.txt

@@ -4,3 +4,5 @@
 # needed for doc build
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD
 oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
+flake8>=2.5.4,<2.6.0 # MIT
+yamllint

tools/new-election.py

@@ -40,4 +40,5 @@ for project in project_list + ["TC"]:
     open("%s/.placeholder" % dpath, "w").close()
     print "[+] Created %s" % dpath
 
-print "Done. Now please manually update events.yaml and doc/source/index.rst substitutions"
+print("Done. Now please manually update events.yaml and "
+      "doc/source/index.rst substitutions")

tools/render-wiki-list.py

@@ -2,7 +2,7 @@
 
 import sys
 sys.path.append("doc/source/_exts")
-from candidates import build_candidates_list
+from candidates import build_candidates_list  # noqa: E402
 
 GIT_BASE = 'http://git.openstack.org/cgit/openstack/election/plain/'
 

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = docs
+envlist = docs,linters
 minversion = 1.6
 skipsdist = True
 
@@ -10,8 +10,15 @@ setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
+[testenv:linters]
+commands = yamllint events.yaml
+           flake8
+
 [testenv:venv]
 commands = {posargs}
 
 [testenv:docs]
 commands = python setup.py build_sphinx
+
+[flake8]
+exclude=.tox,doc/source/conf.py