1 def code():2     from random import randint3     num =[str(i) for i in range(0,10)]                       #生成0-9的列表4     low_alph = [chr(i) for i in range(97,123)]             #生成a-z小写字母列表5     upp_alph = [chr(j) for j in range(65,91)]                  #生成A-Z大写字母列表6     lst = num + low_alph + upp_alph                               #将所有元素添加到一个列表7 8     code = random.sample(lst,4)            #从列表中所有字符中,抽取四个9     return code

1 def code():2     import random3     msg = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXZ"4     code = ""5     for i in range(4):6         code += msg[random.randint(0,55)]7     print(code)