Method not printing total or average

[SephMon]

The list is populated with user input but it doesn't print out the total when it sums all the numbers or average of list

list = []
total = 0
num = 0

keep_going = True


def get_input():
    while keep_going:
        try:
            num = int(input("Please enter numbers into list or 0 to exit: "))
            if num == 0:
                break
            list.append(num)
        except ValueError:
            print("VALUE MUST BE INTEGER! ")
    sum_array(num)
    calculate_average(num)
    print_answers(num, average)


def sum_array(num):
    for nums in list:
        num += int(nums)


def calculate_average(num):
    global average
    average = num / len(list)


def print_answers(num, average):
    print(list)
    print("Total: ", num)
    print("Average: ", average)


get_input()

Any ideas? thanks.