2 Answers
+ 6
The Introduction to Python course should give you a good idea about the very basics, and you have already completed that one.
I don't know about "perfectly". I would go for "sufficiently enough to be usable".
Perfect knowledge will have some nasty surprises for you, your world will crumble a few times when you get more advanced with Python. :)
+ 2
AT-AT579 ,
If you're asking for permission from strangers to forget some of the stuff in the course you took, I won't give it ;)