https://codereview.appspot.com/23080044/diff/1/quickinstall.py File quickinstall.py (right): https://codereview.appspot.com/23080044/diff/1/quickinstall.py#newcode75 quickinstall.py:75: print "Moin2 requires Python 2.7.* .. Please consider upgrading" there is already a working version check in MoinMoin/__init__.py (iirc). or was it setup.py? also, it seems that RogerHaase is also working on this issue right now.