- if判断语句
In [1]: n =input("请输出一个数字：")请输出一个数字：18In [2]: n = int(n)In [3]: type(n)Out[3]: intIn [4]: if n == 18: ...: print("猜对了！") #缩进四个空格为规范写法 ...: print("相等") ...: 猜对了！相等In [5]: n = 19In [6]: if n == 19: ...: print("相等") ...: else: ...: print("不相等") ...: 相等In [7]: if n == 18: ...: print("相等") ...: else: ...: print("不相等") ...: 不相等In [13]: n = 19In [14]: if n == 18: ...: print("相等") ...: elif n > 18: ...: print("大了") ...: elif n < 18: ...: print("小了") ...: 大了In [15]: n = 17In [16]: if n == 18: ...: print("相等") ...: elif n > 18: ...: print("大了") ...: elif n < 18: ...: print("小了") ...: 小了else
In [19]: if 19 == 18: ...: print("相等") ...: elif 17 > 18: ...: print("大了") ...: elif 19 < 18: ...: print("小了") ...: else: ...: print("以上条件都没满足") ...: 以上条件都没满足In [25]: n = ''In [26]: if n: ...: print("ok") ...: else: ...: print("no") ...: no# '' False [] () {} None 为假的以上就是本次分享的全部内容，当初想要学习编程的小伙伴欢送关注Python技术大本营，获取更多技能与教程。