'''
Input: num_list - a list of integers
Returns: the number of elements removed from the list
Effects: removes all zeroes from num_list
'''
def remove_zeroes(num_list):
    count = 0
    for i in num_list:
        if num_list[i] == 0:
            num_list.remove(num_list[i])
            count += 1
    return count