题意

使用 random 随机生成一个数，然后去猜。

实现

import random


a = random.randint(1,100)
while True:
    num = int(input('请输入一个1~100之间的数：'))
    if num == a:
        print('恭喜你，猜对了！')
        break
    elif num > a:
        print('猜大了，重新输入!')
    else:
        print('猜小了，重新输入！')

扩展

猜拳游戏

import random


computer = random.randint(0, 2)
while True:
    player = int(input('（0-石头|1-剪刀|2-布）玩家出拳：'))
    if (player == 0 and computer == 1) or (player == 1 and computer == 2) or (player == 2 and computer == 0):
        print('玩家赢了')
        break
    elif player == computer:
        print('本局平局')
    else:
        print('玩家输了')