reflection

[Duncan Booth]

"carlo v. dango" <dango at inc.com> wrote in news:77rbr1-
175.ln1 at gatekeeper.kadnet.dk:

> hello there
> 
> I have searched the documentation in vein... :(
> 
> I would like to be able to
> 
> a) see all classes in the runing system

New style classes:

def allclasses():
    klasses = { }
    work = [ object ]
    while work:
        aType = work.pop()
        if aType not in klasses:
            klasses[aType] = None
            work.extend(type.__subclasses__(aType))
    return klasses.keys()

print allclasses()

Or for all classes, new and old:

import gc, types
for o in gc.get_objects():
    if type(o) in (type, types.ClassType):
        print repr(o)

> 
> b) inspect all classse that can be found in pythonpath (to look for 
> classes not yet made instances of / loaded)
> 
> 
> how to perform these simple tasks?
> 
> sincerely
>   Carlo