猜字游戏

1、用到的知识点：

1）input()，键盘输入字符

2）random.randint()随机生成一个数字，用于做答案

3）while循环，一定有跳出循环的语句

4）if...else判断语句

5）time.time()记录当前时间，用于做时长统计

6）round() 取四舍五入的值

2、上代码

import random
import time
#准备
while True:
    start = input('The game will start,are you ready? y/n\n')
    if start != 'y':
        print('please input again')
    else:
        print('OK,It begin,It is a number between 0 and 999')
        break

#随机设置一个数字
n = random.randint(0,1000)

#开始计时
starttime = time.time()

#猜字
while True:
    num = int(input('input your number:'))
    if num < n:
        print ('your number is smaller')
    elif num > n:
        print ('your number is bigger')
    else:
        print('congradulations,you are right')
        break

#结束计时
endtime = time.time()

#计算时长，四舍五入取整
durtime = round(endtime-starttime)

#针对时长，做出判断
if durtime < 30:
    print('you used %d s,A' %durtime)
elif durtime < 60:
    print('you used {}s,B'.format(durtime))
else:
    print('you used {}s,C'.format(durtime))