In [2]:

    

class Pen():
    def __init__(self, size, name):
        self.name = name
        self.size = size
    
    def set_name(self, name):
        self.name = name


    

In [3]:

    

class BallPen(Pen):
    def __init__(self, size, name, color):
        self.color = color
        super(Pen).__init__(size, name)
    
    def set_color(self, color):
        self.color = color


    

In [4]:

    

class InkPen(Pen):
    def __init__(self, size, name, cart_type):
        self.cart = cart_type
        super(Pen).__init__(size, name)


    

In [5]:

    

pb = BallPen(10, "Renolds", "Green")
print(pb.name)
pb.set_name("cello")
print(pb.name)
print(dir(pb))


    

    




---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-5-8335b0d47e20> in <module>()
----> 1 pb = BallPen(10, "Renolds", "Green")
      2 print(pb.name)
      3 pb.set_name("cello")
      4 print(pb.name)
      5 print(dir(pb))

<ipython-input-3-61166b76a72b> in __init__(self, size, name, color)
      2     def __init__(self, size, name, color):
      3         self.color = color
----> 4         super(Pen).__init__(size, name)
      5 
      6     def set_color(self, color):

TypeError: super() argument 1 must be type, not int

In [22]:

    

# NOTE: python 2 has issues with Super , get it also documented here