Python基础-random模块及随机生成11位手机号

import random

# print(random.random())  # 随机浮点数，默认取0-1，不能指定范围
# print(random.randint(1, 20))  # 随机整数，顾头顾尾
# print(random.choice('sdfsd233'))  # 随机取一个元素
# print(random.sample('hello234234史蒂夫34', 4))#从序列中随机取几个元素,返回是一个list

# f =random.uniform(1, 9)  # 随机取浮点数，可以指定范围
# x = [1, 2, 3, 4, 6, 7]
# random.shuffle(x)  # 洗牌,打乱顺序，会改变原list的值
# print(x)

利用随机数生成11位手机号

import string
def phone_num(num):
    all_phone_nums=set()
    num_start = ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
           '', '', '', '', '', '', '', '', '', '', '', '']
    for i in range(num):
        start = random.choice(num_start)
        end = ''.join(random.sample(string.digits,8))
        res = start+end+'\n'
        all_phone_nums.add(res)
    with open('phone_num.txt','w',encoding='utf-8') as fw:
        fw.writelines(all_phone_nums)
phone_num(1000)