python猜数字游戏

无聊写个python猜数字游戏:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# created by fhqplzj on 2017/06/23 下午12:18
import random
import string
import time

def game(target):
possibles = string.letters + string.digits + ' '
current = [random.choice(possibles) for _ in range(len(target))]
flag = False
while not flag:
print ''.join(current)
flag = True
for i in range(len(target)):
if current[i] != target[i]:
current[i] = random.choice(possibles)
flag = False
time.sleep(0.02)

if __name__ == '__main__':
game(raw_input('input target: '))