reinsn wrote:
> Hi,
>
> I am currently working with ZopeX3. Because python doesn't include
> concept of interfaces,
It does, but implicitly. The interface of an object is the set of
messages it understands.
> those were defined by the module zope.interface.
>
> So interfaces were defined like:
>
> class IMyInterface(zope.interface.Interface):
> .....
>
> I have looked into the module zope.interface and found, that
> zope.interface.Interface is an object instance and no class object! But
> how does this work? How can I derive from an object instance?
Python classes *are* objects - instances of their metaclass.
> I mean is something like this possible in Python?
>
> class X: pass
>
> x = X()
>
> class Y (x):
> .....
Not directly. Google for Python +metaclass.
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bruno desthuilliers
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