From a0e06a8e96ccfeee1de0030da0a1a2ac9e6e5aad Mon Sep 17 00:00:00 2001
From: Chuck Short <chuck.short@canonical.com>
Date: Sat, 22 Dec 2012 15:36:34 -0600
Subject: [PATCH] Add pyflakes to tox.ini

Add the ability to use pyflakes.

Change-Id: I1c0a652258fd494bf6754b5b83c47166582a85d0
Signed-off-by: Chuck Short <chuck.short@canonical.com>
---
 tools/flakes.py | 22 ++++++++++++++++++++++
 tox.ini         |  4 ++++
 2 files changed, 26 insertions(+)
 create mode 100644 tools/flakes.py

diff --git a/tools/flakes.py b/tools/flakes.py
new file mode 100644
index 0000000000..4b93abc210
--- /dev/null
+++ b/tools/flakes.py
@@ -0,0 +1,22 @@
+"""
+ wrapper for pyflakes to ignore gettext based warning:
+     "undefined name '_'"
+
+ From https://bugs.launchpad.net/pyflakes/+bug/844592
+"""
+import __builtin__
+import os
+import sys
+
+from pyflakes.scripts.pyflakes import main
+
+if __name__ == "__main__":
+    names = os.environ.get('PYFLAKES_BUILTINS', '_')
+    names = [x.strip() for x in names.split(',')]
+    for x in names:
+        if not hasattr(__builtin__, x):
+            setattr(__builtin__, x, True)
+
+    del names, os, __builtin__
+
+    sys.exit(main())
diff --git a/tox.ini b/tox.ini
index b73d0ca17e..5b322b8428 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,3 +27,7 @@ setenv = NOSE_WITH_COVERAGE=1
 
 [testenv:venv]
 commands = {posargs}
+
+[testenv:pyflakes]
+deps = pyflakes
+commands = python tools/flakes.py keystone