Superclasses
Michael Hudson
mwh21 at cam.ac.uk
Fri Feb 18 12:39:02 EST 2000
"Joshua C. Marshall" <jayantha at ccs.neu.edu> writes:
> On Thu, 17 Feb 2000, Fredrik Lundh wrote:
>
> > Joshua C. Marshall <jayantha at ccs.neu.edu> wrote:
> > > Given a class object, is there a way to get at its superclass object?
> >
> > the thing you're looking for is "__bases__"
>
> Thanks, that's what I needed. Incidently, where is "__bases__" defined?
> If "T" is a class object, doing a "dir(T)" doesn't show "__bases__" as a
> field.
>
That's because it's a magic attribute; look at Objects/classobject.c
around about line 190 or so. There is a fairly small set of such
attributes in Python; the "__class__" attribute of instance objects is
similar.
Maybe `dir' should be fixed to add such things. But it's only a minor
wart.
> Sorry if this is a double-post. Doesn't seem my last one went through.
It did. But never mind, it wasn't about whitespace!
Cheers,
Michael
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