#!/usr/bin/env python
# -*- coding:utf8 -*-
age = int(input("输入您的年龄"))
if age < 18:
print ("您是一名未成年")
elif age > 18:
print ("您是一名成年人")
else:
print ("输入错误,请重新输入")
-----------------------------------------------
name_list = ["jin","tom","cat","jak","sum"]
if "jin" in name_list:
print ("jin")
else:
print ("error")
以上就是python语法练习--if判断的内容。