Python--面向对象小结

小结主要讲述面向对象的优点，可扩展性高

示例代码如下：

class Chinese:
    def __init__(self,name,age,sex):
        self.name=name
        self.age=age
        self.sex=sex


p1 = Chinese('egon',18,'male')
p2 = Chinese('alex',38,'female')
p3 = Chinese('wpq',48,'female')

我们往类中插入一个数据属性，只需在类中添加即可，对象不需做什么改动就可以访问，代码验证如下：

class Chinese:
    country = 'China'
    def __init__(self,name,age,sex):
        self.name=name
        self.age=age
        self.sex=sex


p1 = Chinese('egon',18,'male')
p2 = Chinese('alex',38,'female')
p3 = Chinese('wpq',48,'female')

print(p1.country)
print(p2.country)
print(p3.country)

结果如下：

China
China
China 证明都可以访问

插入一个函数属性，只需在类中添加即可，对象不需做什么改动就可以访问，代码验证如下：

class Chinese:
    country = 'China'
    def __init__(self,name,age,sex):
        self.name=name
        self.age=age
        self.sex=sex

    def eat(self):
        print('%s is eating' % self.name)


p1 = Chinese('egon',18,'male')
p2 = Chinese('alex',38,'female')
p3 = Chinese('wpq',48,'female')

p1.eat()
p2.eat()
p3.eat()

结果如下：

egon is eating
alex is eating
wpq is eating