Python实现带参数与不带参数的多重继承示例

# 作者：hhh5460# 时间：2017.07.18class A(object):  def show_x(self):    print('A')class B(object):  def show_y(self):    print('B')class C(object):  def show_z(self):    print('C')class D(A, B, C):  pass# 测试if __name__ == '__main__':  d = D()  d.show_x() # A  d.show_y() # B  d.show_z() # C

# 作者：hhh5460# 时间：2017.07.18class A(object):  def __init__(self, x=0):    self._x = x  def show_x(self):    print(self._x)  def show_name(self):    print('A')class B(object):  def __init__(self, y=0):    self._y = y  def show_y(self):    print(self._y)  def show_name(self):    print('B')class C(object):  def __init__(self, z=0):    self._z = z  def show_z(self):    print(self._z)  def show_name(self):    print('C')# 注意下面两类D、E，都是继承A、B、C，且A类的优先级最高。但是三条__init__语句的顺序是相反的class D(A, B, C):  def __init__(self, x=0, y=0, z=0):    C.__init__(self, z) # init C    B.__init__(self, y) # init B    A.__init__(self, x) # init A （A最优先）class E(A, B, C):  def __init__(self, x=0, y=0, z=0):    super(E, self).__init__(x) # init A （A最优先） # 此句可简写成：super().__init__(x)    super(A, self).__init__(y) # init B    super(B, self).__init__(z) # init C# 测试if __name__ == '__main__':  d = D(1,2,3)  d.show_x()  # 1  d.show_y()  # 2  d.show_z()  # 3  d.show_name() # A  e = E(1,2,3)  e.show_x()  # 1  e.show_y()  # 2  e.show_z()  # 3  e.show_name() # A