用Python写一个批量生成账号的函数（用户控制数据长度、数据条数）

# 1、写一个函数，批量生成一些注册使用的账号：产生的账号是以@163.com结尾，长度由用户输入，产生多少条也由用户输入，用户名不能重复，用户名必须由大写字母、小写字母、数字组成

import random,stringdef Users(num,len):    result = []    a = string.ascii_lowercase    b = string.ascii_uppercase    c = string.digits    d = string.ascii_letters    count = 0    while count < num:        if len > 2:            a1 = random.choice(a)            b1 = random.choice(b)            c1 = random.choice(c)            d1 = random.sample(d,len-3)            d1.append(a1)            d1.append(b1)            d1.append(c1)            random.shuffle(d1)            users = ‘‘.join(d1) + ‘@163.com‘ +‘\n‘            if users not in result:                result.append(users)                count +=1        else:            print(‘请输入大于2的长度‘)            break    with open(‘users.txt‘,‘w‘) as fw:        fw.writelines(result)Users(1,3)

#用集合的方式实现def USERS(num,len):    result = []    all_str = string.ascii_letters + string.digits    upp_str = string.ascii_uppercase    low_str = string.ascii_lowercase    str = set(string.digits)    count = 0    while count < num:        if len > 2:            res = random.sample(all_str,len)            if set(res) & set(upp_str) and set(res) & set(low_str) and set(res) & str:                user = ‘‘.join(res) + ‘@163.com‘ + ‘\n‘                if user not in result:                    result.append(user)                    count +=1        else:            print(‘请输入大于2的长度！‘)            break    with open(‘users.txt‘,‘w‘) as fw:        fw.writelines(result)USERS(3,3)