【Python】Learn Python the hard way, ex29 if语句

条件判断示例

最新推荐文章于 2021-11-02 20:21:54 发布

原创最新推荐文章于 2021-11-02 20:21:54 发布 · 556 阅读

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本示例通过简单的条件判断语句展示了当人物数量、猫的数量及狗的数量不同时，输出的不同结果。具体而言，该程序定义了人物、猫及狗的数量，并通过一系列条件判断输出了关于世界状态的趣味性描述。

people = 20
cats = 30
dogs = 15

if people < cats:
    print "Too many cats! The world is doomed!"

if people > cats:
    print "Not many cats! The world is saved!"
    
if people < dogs:
    print "The world is drooled 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."
    
"""
Test Result:

Too many cats! The world is doomed!
The world is dry!
People are greater than or equal to dogs.
People are less than or equal to dogs.
People are dogs.
"""