Global Variable in Python

Question

I am very new to Python. Not learnt classes yet. Using Python 3.2.2. Tried implement some procedural C logic. My code is spread over 2 files as follows.

this file i

Answer 1

Your date.isValidDate function does not operate on the globalvariables dd, mm, yy - it rather operates on (function) local variables with the same names.

In order for date.isValidDate to change the (module) global values of the variables you want, you have to declare them as global at the top of the function - like this:

def isValidDate(d,m,y):
    global dd, mm, yy
    ...