I installed python 2.6 alongside my mac\'s 2.5.2 version. As soon as I did, python2.6 manage.py runserver failed because it couldn\'t find django.core.management.
Fr
Add site-packages to PYTHONPATH:
export PYTHONPATH="/home/jerome/bin/django-1.1/lib/python2.6/site-packages:$PYTHONPATH"
Worked on Ubuntu, with a python/django virtual environment using virtualenv and pip.
Source: http://benfsayer.com/importerror-no-module-named-django-core-management/