OP when i saw the title "list of simple mathematical operations in ECC secp256k1 (Python)." I think that those funtions will be implemented directly in python only... I don't see why you get merit just by showing someone else code here.
If I had wanted to put only python code (without modules) it would no longer be "simple", but would be expressed in the title "pure python", my idea is to make it easy for those looking for simple and quick solutions, excuse me if I receive merits for that, but I don't choose who gives them to me.