Just the ticket. Thank you! Ron Griswold Character TD R!OT Pictures [EMAIL PROTECTED]
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fredrik Lundh Sent: Monday, December 05, 2005 3:58 PM To: python-list@python.org Subject: Re: apply()? Ron Griswold wrote: > I'm almost positive I've seen a function somewhere that will call a > method of an object given the method's name. Something like: > > apply(obj, "func_name", args) > > is equivalent to: > > obj.func_name(args) > > For some reason I thought this was the apply function, but that doesn't > appear to be the case. Can someone point me in the right direction? sounds like you're looking for getattr (get attribute): func = getattr(obj, "func_name") result = func(args) or, in one line: result = getattr(obj, "func_name")(args) a common pattern is try: func = getattr(obj, "func_name") except AttributeError: ... deal with missing method ... else: result = func(args) (this makes sure that an AttributeError raise inside the method isn't confused with an AttributeError raise by getattr). another pattern is func = getattr(obj, "func_name", None) if func: func(args) which only calls the method if it exists. here's a variation: func = getattr(obj, "func_name", None) if callable(func): func(args) hope this helps! </F> -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
