When attempting to run graph_models it always fails with manage.py: error: no such option:
Example:
python manage.py graph_models -a -g -o django_schema.png
Usage: manage.py graph_models [options]
Creates a GraphViz dot file for the specified app names. You can pass multiple app names and they will all be combined into a single model. Output is usually directed to a dot file.
manage.py: error: no such option: -a
Read the docs: http://django-extensions.readthedocs.io/en/stable/
Compatibility with versions of Python and Django We follow the Django guidelines for supported Python and Django versions. See more at Django Supported Versions
This might mean the django-extensions may work with older or unsupported versions but we do not guarantee it and most likely will not fix bugs related to incompatibilities with older versions.
At this time we test on and thrive to support valid combinations of Python 2.7, 3.4, 3.5, pypy and pypy3 with Django versions 1.8 and 1.9.
Upgrade Django to 1.8 or maybe use an older version of django-extensions.