Django 1.4 Requires Python 2.5+

Django 1.4 is the first Django release to remove support for Python 2.4. This change is an expected for two reasons. First, beginning with Django 1.2, Python 2.3 support was dropped and the community was notified that Django 1.4 would again increment the required Python version. Second, the Django core developers need support for context managers, which were added in Python 2.5.

Note that although Django 1.4 supports Python 2.5+, it does not yet support Python 3.x. Although progress has been made porting Django to Python 3.x, it is not fully tested or ready for release as specified in Django's release process.