def push_or_pop(list_of_numbers):
    new_list = [ ]
    for number in list_of_numbers:
        if number > 5:
            new_list.append(number)
        else:
            new_list.pop( )
    print(new_list)


push_or_pop([10, 20, 2, 30])  #Example (argument should consist of a list of numbers)