I have been having the problem trying to run manage.py on a live server.
Firstly as it is on linux, it is necessary to prepend windows style statements with python.
python manage.py runserver
instead of
manage.py runserver
Also, make sure you are using the correct version of python. E.g:
python2.7 manage.py runserver
If you don’t you will get an error about trying to import django.core.management :
File “manage.py”, line 2, in <module>
from django.core.management import execute_manager
ImportError: No module named django.core.management
