See PEP 328[1] for details. This feature was introduced in Python 2.5 and
will become mandatory in Python 3.
[1]: http://www.python.org/dev/peps/pep-0328
(imported from commit 7444eeba8a08d5f91b94c7921848f2274979bd76)
The previous situation was bad for two reasons:
(1) It had a lot of copies of the code, some of them missing pieces:
UserProfile.objects.get(user__email__iexact=foo)
This was in particular going to be inconvenient since we are dropping
the __user part of that.
(2) It didn't take advantage of our memcached caching.
(imported from commit 2325795f288a7cf306cdae191f5d3080aac0651a)
Only a few of them took a User as an argument anyway.
This is preparatory work for merging the User and UserProfile models.
(imported from commit 65b2bd2453597531bcf135ccf24d2a4615cd0d2a)
