Django，如何彻底清除之前的数据model？

Question

I'm viewing my admin site, but in the Add Groups page, I can still see the available permissions that I have deleted before. and in my models.py I haven't configured any of these table yet.

Does this mean I didn't clear my database thoroughly? Is there any way to delete all of these, just leave the permissions I have in this list?

Thank you!

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Update:

I dropped my database created a new one, and re-built my data model. I can't view my previous group now:)

Answer 1

I dropped my database and my previous database user (Don't know if a new user is necessary), and created a new one. Then all my previous groups in this list disappeared. :)