# -*- coding: utf-8 -*-
class Animal(object):
def run(self):
print('Animal is running...')
def run_twice(self):
self.run()
class Dog(Animal):
print('Dog is running...')
class Cat(Animal):
print('Cat is running...')
a = Animal()
b = Dog()
c = Cat()
print(isinstance(a, Animal))
print(isinstance(b, Dog))
print(isinstance(c, Cat))
print(isinstance(a, Dog))
a.run_twice()
b.run_twice()
c.run_twice()
之前学过等于再复习,这速度有点慢,到今天已经一周多了
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岁益寒
# -*- coding: utf-8 -*-
class Animal(object):
def run(self):
print('Animal is running...')
def run_twice(self):
self.run()
self.run()
class Dog(Animal):
def run(self):
print('Dog is running...')
class Cat(Animal):
def run(self):
print('Cat is running...')
a = Animal()
b = Dog()
c = Cat()
print(isinstance(a, Animal))
print(isinstance(b, Dog))
print(isinstance(c, Cat))
print(isinstance(a, Dog))
a.run_twice()
b.run_twice()
c.run_twice()