Thanks Vinay Sajip for the support of his django3 branch and Jannis Leidel for the review.
name because "is" is a reserved word in Python. Patch from django@einaregilsson.com. git-svn-id: http://code.djangoproject.com/svn/django/trunk@5080 bcc190cf-cafb-0310-a4f2-bffc1f526a37