IF 语句

• 输入：

# -*- coding: utf-8 -*-

people = 20
cats = 30
dogs = 15

if people < cats:
    print "Too many cats! The world is saved!"
    
if people < dogs:
    print "The world is drooles on!"
    
if people > dogs:
    print "The world is dry!"
    
dogs += 5

if people >= dogs:
    print "People are greater than or equal to dogs."
    
if people <= dogs:
    print "People are less than or equal to dogs."
    
if people == dogs:
    print "People are dogs."```
- 运行：![](http://upload-images.jianshu.io/upload_images/3181286-5ed1f2f1f6dc60d7.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
> 非常简单的条件判断语句：如果条件成立，则执行下面的命令