机器学习基础入门-jupyter4

我的学习笔记-python3入门

小节4：条件与循环

if 条件语句

while、for 循环语句

无限循环代码

import time 

i = 0 
while True:   
    i = i+1
    print("无限循环", i)
    time.sleep(1)

 

print("你想买啥？请输入数字5 12 21 52.0")
a = 5
if  a == 5:
    print("鸡腿")
elif a == 12:
    print("盖浇饭")
elif a == 21:
    print("章鱼烧")
elif a &#