IF 语句
# -*- 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：
> 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
