python 2nd 条件控制
作者:互联网
实例1
#简单判断是否成年 age=19 if age>18: print("成年了") else: print("未成年") #输出:成年了
实例2
#根据红绿灯执行 lights="blue" if lights == "red": print("stop") elif lights == "green": print("go") else: print("开心就好") #输出:开心就好
实例3
#模拟系统登录 yonghuming='admin' mima='123' username=input('请输入用户名:') password=input('请输入密码:') if username == yonghuming and password == mima: print('正在进入系统,请稍后'+'.'*20) elif username!=yonghuming and password!=mima: print('账号和口令都不正确,请重试!') elif username!=yonghuming: print('账号不正确,请重试!') else: print('口令不正确,请重试!') print('结束')
标签:username,控制,elif,python,yonghuming,2nd,lights,print,else 来源: https://www.cnblogs.com/xsgg/p/15196529.html