python Class:面向對象高級編程 多重繼承
多重繼承:通過子類繼承多個類
一、多重繼承一類
套用廖雪峰的例子:
https://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/0013868200511568dd94e77b21d4b8597ede8bf65c36bcd000
Dog - 狗狗;
Bat - 蝙蝠;
Parrot - 鸚鵡;
Ostrich - 鴕鳥。
按哺乳和鳥類分:
按跑和飛分:
總的:
程序:
#!/usr/bin/python
# -*- coding: utf-8 -*-
class Animal(object):
pass
# 大類:
class Mammal(Animal):
pass
class Bird(Animal):
pass
#功能
class Runnable(object):
def run(self):
print('Running...')
class Flyable(object):
def fly(self):
print('Flying...')
# 各種動物:
class Dog(Mammal, Runnable):
pass
class Bat(Mammal, Flyable):
pass
class Parrot(Bird, Flyable):
class Ostrich(Bird, Runnable):
pass
dog = Dog()
dog.run()
運行結果:Running...
二、多重繼承二類:Mixin
除了大類,其他繼承的類,只要在類名後面+Mixin就可以了。
程序:
#!/usr/bin/python
# -*- coding: utf-8 -*-
class Animal(object):
pass
# 大類:
class Mammal(Animal):
pass
class Bird(Animal):
pass
#功能
class RunnableMixin(object):
def run(self):
class FlyableMixin(object):
def fly(self):
print('Flying...')
# 各種動物:
class Dog(Mammal, RunnableMixin):
pass
class Bat(Mammal, FlyableMixin):
pass
class Parrot(Bird, FlyableMixin):
pass
class Ostrich(Bird, RunnableMixin):
dog = Dog()
dog.run()
最後發現,一類和二類沒啥區別。。。。。。逗我呢。。。。。。。Mask一下,日後再回頭看。
python Class:面向對象高級編程 多重繼承