How to check arguments of the function?

Question

I have function defined this way:

def f1 (a, b, c = None, d = None):
    .....

How do I check that a, b are not equal

Answer 1

for key, value in locals().items():
    if value is not None:
        check_attribute(key, value)

Though as others have said already, you can just check the arguments directly by name.