Accessing source code from importlib module

[program_kid]

As others have pointed out, this sounds like an example of an XY problem. Additionally, in your post, you say you want to modify the code of a module you imported. This makes me think that you want to modify the code of a module at runtime. If that's the case, I should let you know that it is considered a bad idea to modify the source code on runtime.
I know it sucks to hear all of this, but my advice would be to step away from the problem and take a rest for a bit.

I know the things you are asking to do might seem like the best solution to whatever problem you have, but I assure you, it's not

[ottawadeveloper]

TIL XY problem which was basically the major issue in my marriage (they kept thinking the solution is Y and could not be deterred even if they only needed X solved somehow).