The new djblets.util.compat.django.shortcuts module features a

version of render() that works with older and newer versions of

Django. Any existing calls to render() or render_to_response()

should be updated to use this.
The new djblets.util.compat.django.utils.functional provides a

backport of SimpleLazyObject, which supports more special functions

like __iter__, __contains__, and more. This is a drop-in replacement

for Django's SimpleLazyObject.
The new djblets.util.compat.python.past is intended to provide

re-implementations of old useful capabilities that have been removed

from Python 3.x. For now, it provides cmp, which Python 3 has removed

in favor of a hard-to-remember comparison expression. For readability,

consistency, and easier development, our version can be used in place of

that expression.

Made use of this in some pending code. These worked on Python 2.7,

3.5, and 3.6.