def get_dictionary(name=None):
    '''get_dictionary(object)

    Import needed functions.
    Setup the random system.
    Create needed variables.
    Create the dictionary.
    Return the dictionary.'''
    from random import randint, seed
    seed(name)
    dictionary, list_one, list_two = list(), range(256), range(256)
    for index in range(256):
        index_one, index_two = randint(0, 255 - index), randint(0, 255 - index)
        dictionary.append((list_one[index_one], list_two[index_two]))
        del list_one[index_one], list_two[index_two]
    return dictionary
get_dictionary(object)

    Import needed functions.
    Setup the random system.
    Create needed variables.
    Create the dictionary.
    Return the dictionary.
recipes/Python/440628_Encrypting_A_String/recipe-440628.py