2018-07-05-Python全棧開發day25-python中的繼承

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# class Eat:#     def __init__(self):#         print(‘eat‘)#     def eat(self):#         print(‘eat‘)## class Run:#     def __init__(self):#         print(‘run‘)# class Cat(Eat,Run):#     def __init__(self):#         print(‘this is a cat‘)#     def eat(self):#         print(‘this is sons eat‘)# class Dog(Eat,Run):#     def __init__(self):#         print(‘this is a dog‘)# p1=Cat()# p1.eat()

# class Father:#     def __init__(self,name,age,gender):#         self.name=name#         self.age=age#         self.gender=gender#     def test(self):#         print(‘this is father s way‘)# class Son(Father):#     def __init__(self,name,age,gender,school):#如果兒子和父親在name，age，gender等方面都一樣，笨方法是再寫一遍#         # self.name = name#         # self.age = age#         # self.gender = gender#接著再寫子類專屬的屬性#         # Father.__init__(self,name,age,gender)#此方法如果父類的名字改變，則沒法子#         super().__init__(name,age,gender)#方便之處是不用在意父類的名字改變，而且不用加self#         self.school=school#     def test(self):#         # Father.test(self)#最古老的方法#         super().test()## p1=Son(‘yehiabin‘,‘18‘,‘male‘,‘sdau‘)# p1.test()## print(p1.name)

import abcclass jilei(metaclass=abc.ABCMeta):    @abc.abstractmethod    def write(self):        print(‘this is write‘)    @abc.abstractmethod    def read(self):        print(‘this is read‘)class son(jilei):    def write(self):        print(‘this is son‘)p1=son()p1.write()

Traceback (most recent call last):  File "C:/Users/brown/PycharmProjects/python_s3/dya25/繼承.py", line 64, in <module>    p1=son()TypeError: Can‘t instantiate abstract class son with abstract methods read#必須再寫一個read方法來和基類一致

 

2018-07-05-Python全棧開發day25-python中的繼承