"""
double_list.py

 write a function that returns twice each element of a list .

"""

def double_list(numbers):
    """ return a new list which is twice each number in numbers  """
    answer = []
    for n in numbers:
        answer.append( 2 * n )
    return answer

def main():
    the_list = [3, 7, 11]
    answer = double_list(the_list)
    print("the orgininal list is ", the_list)
    print("the new list is ", answer)

main()