类的继承与传递,子类能继承父类,爷爷类
# coding:utf-8
# 继承的传递,子类能继承父类,爷爷类
class Animal:
def eat(self):
print 'eat'
def sleep(self):
print 'sleep'
class Dog(Animal):
def bark(self):
print 'bark'
class XiaoTianQuan(Dog):
def fly(self):
print 'I can fly'
da_huang = Dog()
da_huang.bark()
da_huang.eat()
xiao_tian = XiaoTianQuan()
xiao_tian.fly()
xiao_tian.sleep()