Le vendredi 08 septembre 2006 09:51, [EMAIL PROTECTED] a écrit :
> Frank Millman, just a short note, more expert people can give you
> better answers. There aren't abstract classes in Python. They are all
> concrete.
Really ? This is like saying there is no singleton in Python...
class AbstractClass(object) :
def __init__(self) : raise RuntimeError('Ths class is an abstract one
!')
The abstract class can then define APIs (methods which raise
NotImplementedError) and/or logic (fully implemented methods).
With this scheme you are not stuck to the "API only" usage of abstract classes
like in Java nad its interfaces.
> You may have classes with undefined methods (they may raise
> NotImplementedError).
C++ "pure virtual methods" is only the C++ way of doing something which is a
more general concept in OOP.
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