Constructors...BIIIIG PROBLEM!

Ian Kelly ian.g.kelly at gmail.com
Thu Sep 1 15:57:00 CEST 2011


On Thu, Sep 1, 2011 at 3:04 AM, Michiel Overtoom <motoom at xs4all.nl> wrote:
>
> On Sep 1, 2011, at 10:24, Hegedüs Ervin wrote:
>
>> On Thu, Sep 01, 2011 at 10:00:27AM +0200, Michiel Overtoom wrote:
>>> Derive your class from object,
>>
>> why's that better than just create a simple class, without
>> derive?
>
> Amongst other things, fixes to the type system and the method resolution order.
>
> http://docs.python.org/reference/datamodel.html#new-style-and-classic-classes
> http://unspecified.wordpress.com/2010/11/18/pythons-new-classes-vs-old-classes/
> http://www.cafepy.com/article/python_types_and_objects/python_types_and_objects.html
> http://www.python.org/download/releases/2.2.3/descrintro/

That is for Python 2.  For Python 3, old-style classes are gone, all
classes derive from object by default, and writing it explicitly is
merely good style for compatibility.



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