how do i start a password validation code with def and have a tf return in python?

elif not password[i].isdigit():
    digit += 1

That is a good start to count the digits. But it is not used to return True or False.

Do a similar thing with special:

elif password[i] in special_char:
    special += 1

At the end of the function, you could do:

val = val and digit > 2 and special > 2

before returning val (without the if).

However, I think you will also need to debug the code, as there might be a ‘not’ too much.