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From: Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject: Re: Calling a derived class's constructor from a parent method
Date: Thu, 15 Jan 2015 04:44:18 +0000
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On 15/01/2015 00:40, Steven D'Aprano wrote:
> jason wrote:
>
>> class B(A):
>>        def __init__(self, s):
>>              A.__init__(self, s)
>
> Unrelated:
>
> It is better to call super than manually call the superclass. Calling A
> directly means your class is no longer compatible with multiple
> inheritance.
>
>      def __init__(self, s):
>          super(B, self).__init__(s)
>

For the OP an excellent article on super here 
https://rhettinger.wordpress.com/2011/05/26/super-considered-super/

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence