On Viernes mayo 18 2012 14:14:33 Johannes Bauer escribió: > Hi group, > > I'm trying to dynamically add methods to a class at runtime. What I > would like to do is have them all delegated to one common function which > is called with the name of the function as first parameter. I.e.: > > class Foo(): > def __init__(self): > # Some magic missing here > setattr(self, "foometh", types.MethodType(self._dispatcher, self)) > setattr(self, "barmeth", types.MethodType(self._dispatcher, self)) > > def _dispatcher(self, caller, *args): > # Dispatcher called with caller == "foometh" > # or caller == "barmeth", depending on which one was called > > > with the effect that > > f = Foo() > f.foometh(1, 2, 3) > # -> this should be equivaent to Foo._dispatcher(f, "foometh", 1, 2, 3) > > f.barmeth() > # -> this should be equivaent to Foo._dispatcher(f, "barmeth") > > I'm kind of stuck. Can you please give me hints? > > Best regards, > Joe > > >> Wo hattest Du das Beben nochmal GENAU vorhergesagt? > > > > Zumindest nicht öffentlich! > > Ah, der neueste und bis heute genialste Streich unsere großen > Kosmologen: Die Geheim-Vorhersage. > - Karl Kaos über Rüdiger Thomas in dsa <hidbv3$om2$1...@speranza.aioe.org>
Hi Johannes, If I understood well your question, for specific attributes I recommend you to have a look at properties and descriptors (I love them). For a general way to deal with attributes: the __getattr__ (to handle undefined attributes), __getattribute__ (to handle *every* attribute; be careful with loops), and __setattr__ (to catch *every* attribute assignmet, same warning concerning loops). Hope it helps. BR, DPalao -- http://mail.python.org/mailman/listinfo/python-list
