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04.inheritance.py
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83 lines (63 loc) · 1.91 KB
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# -*- coding: utf-8 -*-
"""
@description: 继承
@author:XuMing
"""
from __future__ import print_function # 兼容python3的print写法
from __future__ import unicode_literals # 兼容python3的编码处理
# 类定义的基本形式：
# class ClassName(ParentClass):
# """class docstring"""
# def method(self):
# return
# 里面的 ParentClass 就是用来继承的
class Clothes(object):
def __init__(self, color="green"):
self.color = color
def out_print(self):
return self.__class__.__name__, self.color
# Test:
my_clothes = Clothes()
print(my_clothes.color)
print(my_clothes.out_print())
# 定义一个子类，继承父类的所有方法
class NikeClothes(Clothes):
def change_color(self):
if self.color == "green":
self.color = "red"
# 继承父类的所有方法：
your_clothes = NikeClothes()
print(your_clothes.color)
print(your_clothes.out_print())
# 但有自己的方法
your_clothes.change_color()
print(your_clothes.color)
# 如果想对父类的方法进行修改，只需要在子类中重定义这个类即可：
class AdidasClothes(Clothes):
def change_color(self):
if self.color == "green":
self.color = "black"
def out_print(self):
self.change_color()
return self.__class__.__name__, self.color
him_clothes = AdidasClothes()
print(him_clothes.color)
him_clothes.change_color()
print(him_clothes.color)
print(him_clothes.out_print())
# super() 函数
# super(CurrentClassName, instance)
#
# 返回该类实例对应的父类对象。
# 刚才 AdidasClothes可以改写为：
class NewAdidasClothes(Clothes):
def change_color(self):
if self.color == "green":
self.color = "black"
def out_print(self):
self.change_color()
print(super(NewAdidasClothes, self).out_print())
# Test
her_clothes = NewAdidasClothes()
print(her_clothes.color)
her_clothes.out_print()