Home Original page

Multiple ExtensionClass

Joel Lucsy jjlucsy at concentric.net
Tue Feb 22 18:37:25 EST 2000 
You miss the point, I'm writing the classes in C, not Python. I'm using the
ExtensionClass library from Zope.

"Jerry" <2jerry at writeme.com> wrote in message
news:88v35e$2d2$1 at wanadoo.fr...
> Sorry to borrow you but I tried the example to see that strange behaviour:
> I write this :
> >>>class A:
>          def fa(self):
>             print "func fa"
>
> >>>class B(A):
>           def fb(self):
>              print "func fb"
>
> >>>a=B()
> >>>a.fb()
> func fb
> >>>a.fa()
> func fa
>
> What is wrong that work properly ... do you miss the self for the class
> methode ?
> the trace back is significant :
> raceback (innermost last):
>   File "<pyshell#12>", line 1, in ?
>     a.fa()
> TypeError: no arguments expected
>
> best regard, Jerry the foolish dracomorpheus, jérôme VACHER - france -
>
> Joel Lucsy a écrit dans le message ...
> >I've figured it myself (just takes time). Basically I use the
> >PURE_MIXIN_CLASS macro in ExtensionClass. Since the result is an
> >uninstantionable I wrapped a Python class around them. I'll be releasing
> the
> >end result to the public when I'm finished. I'm basically rewriting the
> >pyFLTK toolkit by hand instead of using swig.
> >
> >"Joel Lucsy" <jjlucsy at concentric.net> wrote in message
> >news:CCXq4.651$yT3.43993 at news1.usenetserver.com...
> >> Ok, I've whipped up two ExtensionClass classes (stirred, not shaken)
and
> >am
> >> trying to figure out how one can be a "subclass" of the other. I'll
> >> illustrate what I want (in python for brevity):
> >>
> >> class A:
> >>   def func1():
> >>     pass
> >> class B(A):
> >>   def func2():
> >>     pass
> >>
> >> Now I'd like to be able to do:
> >> a=B()
> >> a.func1()
> >>
> >> So far I haven't figured out how to do this without duplicating the
> >methods.
> >> Should I be messing with the method tables, or somehow manipulating the
> >> dictionaries, or something completely different? I've tried making
python
> >> wrappers, but it complains about multiple bases or something. Basically
> it
> >> wont let me derive from two different ExtensionClasses's. Either that
or
> >I'm
> >> missing something.
> >> Any clues would be great. Thanks.
> >>
> >> --
> >>  - Joel Lucsy (jjlucsy at concentric.net)
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
>
More information about the Python-list mailing list