猫史档案馆

import random
def random_letters_list():
    letters_list = []
    while len(letters_list) < 6:
        letter_one = 'abcdefghijklmnopqrstuvwxyz'[random.randrange(0, 26)]
        if letter_one not in letters_list:
            letters_list.append(letter_one)
    return sorted(letters_list)

def random_letters_dict():
    letters = {1:None,2:None,3:None,4:None,5:None,6:None}
    count = 1
    for letter_two in random_letters_list():
        letters[count] = letter_two
        count += 1
    return letters