extender method

[davehowey at f2s.com]

'Learning Python' by Lutz and Ascher (excellent book by the way)
explains that a subclass can call its superclass constructor as
follows:

class Super:
   def method(self):
   # do stuff

class Extender(Super):
   def method(self):
   Super.method(self)   # call the method in super
   # do more stuff - additional stuff here



I'm trying to use this for a superclass called 'component' in the
constructor. I have different types of component (let's say for
arguments sake resistor, capacitor etc). When I instantiate a new
resistor, say, I want the constructor to call the constructor within
the component superclass, and then add some resistor-specific stuff.

Now, this is fine using the above code. Where I'm struggling is with
argument passing. The following, for example, doesn't seem to work:

class Super:
   def __init__(self, **kargs):
   self.data = kargs

class Extender(Super):
   def __init__(self, **kargs):
   Super.__init__(self, kargs)   # call the constructor method in Super
   # do additional extender-specific stuff here

What am I doing wrong? I get:
TypeError: __init__() takes exactly 1 argument (2 given)
WARNING: Failure executing file: <main.py>

Dave