# !usr/bin/env python
# -*- coding:utf-8 _*-
"""
@Author:何以解忧
@Blog(个人博客地址): shuopython.com
@WeChat Official Account(微信公众号)：猿说python
@Github:www.github.com
@File:python_super.py
@Time:2019/12/29 21:25
@Motto:不积跬步无以至千里，不积小流无以成江海，程序人生的精彩需要坚持不懈地积累！
"""
 
class A:
  def m(self):
    print('A')
 
class B:
  def m(self):
    print('B')
 
class C(A):
  def m(self):
    print('C')
    super().m()
 
C().m()

# !usr/bin/env python
# -*- coding:utf-8 _*-
"""
@Author:何以解忧
@Blog(个人博客地址): shuopython.com
@WeChat Official Account(微信公众号)：猿说python
@Github:www.github.com
@File:python_super.py
@Time:2019/12/29 21:25
@Motto:不积跬步无以至千里，不积小流无以成江海，程序人生的精彩需要坚持不懈地积累！
"""
 
class Dog:
  def __init__(self):
     self.fly = False
  def print_fly(self):
     if self.fly:
        print('不是普通狗，能飞')
     else:
        print('普用狗不会飞')
 
class xiaotianquan(Dog):
   def __init__(self):
     self.sound = True
 
   def print_sing(self):
     if self.sound:
       print("汪汪汪")
     else:
       print("假狗狗")
 
if __name__ == '__main__':
  dog = xiaotianquan()
  dog.print_sing() # 能正常输出
  dog.print_fly() # 报错，AttributeError: 'xiaotianquan' object has no attribute 'fly'

class Dog:
  def __init__(self):
     self.fly = False
  def print_fly(self):
     if self.fly:
        print('不是普通狗，能飞')
     else:
        print('普用狗不会飞')
 
class xiaotianquan(Dog):
   def __init__(self): 
     super().__init__() # 等效 super(xiaotianquan,self).__init__()
     self.fly = True
     self.sound = True
 
 
   def print_sing(self):
     if self.sound:
       print("汪汪汪")
     else:
       print("假狗狗")
 
if __name__ == '__main__':
  dog = xiaotianquan()
  dog.print_sing() 
  dog.print_fly()