How do I set Django to use Python 2.7 instead of Python 2.4?

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http://serverfault.com – I have installed Python 2.7 but still kept Python 2.4. When I enter the command python, it runs python 2.4 and I want to keep it this way. But how to I set Django to use /usr/local/bin/python2.7 when it runs? [EDIT] It is running on Apache with WSGI (HowTos)