def test():

    >>> test()
    test1
    test2
    test3
    test4
    last test
    """
    llist = ['list1', ['list2', ['list3', ['list4', ['last list', None]]]]]

    print(llist[0])
    _____________________
    print(llist[0])
    _____________________
    print(llist[0])
	_____________________
    print(llist[0])
	_____________________
    print(llist[0])