Python - Empty List vs. Function

Question

I know I will probably be flamed for this question, but after 12 hours of researching and trying, this is my last resort. I know it is probably something simple I am overlooking, but now I have tunnel vision cant see it.

Question: How do I update an empty list at the global level, by passing a parameter to a function?

Example:

    >>> A = [] 
    >>> def Update(A = []):
            print("A =", A)
    >>> Update(44)
    A = 44
    >>> A
    []

Answer 1

等待大神答复