On Feb 21, 11:21 am, Lie Ryan <lie.1...@gmail.com> wrote: > On 02/21/10 19:27,lallouswrote: > <snip> > > > If the base defines the method and it was empty, then my C++ code > > would still call the function. This is not optimal because I don't > > want to go from C++ to Python if the _derived_ class does not > > implement the cb. > > That sounds like a microoptimization; have you profiled your code and > determined that calling empty function causes a bottleneck? I doubt it. > > > Now the base class should define it so that doc > > parsers properly describe the base class. > > The recipe suggested is not worth the trouble. > > Unfortunately I cannot use abc module since I use Python 2.5 > > Because nobody here could have guessed that your dispatcher was written > in C++; your problem is near trivial if your dispatcher is a pure-python > code.
You are right. I haven't checked how much it costs to continuously call an empty function, but why do it if I know (during initialization from my C++ dispatcher code) that certain Python object should not have certain methods called. I still prefer not to call at all, even if it was an empty function. Regards, Elias -- http://mail.python.org/mailman/listinfo/python-list
