Duncan Booth wrote: > Ron Garret <[EMAIL PROTECTED]> wrote: > > > I want to say: > > > > trace(c1.m1) > > > > and have c1.m1 be replaced with a wrapper that prints debugging info > > before actually calling the old value of m1. The reason I want that > > to be an instance of a callable class instead of a function is that I > > need a place to store the old value of the method so I can restore it, > > and I don't want to start building a global data structure because > > that gets horribly ugly, and a callable class is the Right Thing -- if > > there's a way to actually make it work. > > > > Is there? I tried the obvious things (like making callable inherit > > from function, and adding im_func and im_self attribuetes) but they > > didn't work. > > Read "Functions and Methods" in > http://users.rcn.com/python/download/Descriptor.htm > > You need to implement a __get__ method on your class.
See also http://groups.google.com/group/comp.lang.python/browse_frm/thread/d691240a5cfebcdf/93503c5b9c66226e?lnk=gst&q=simionato+subclassing+FunctionType&rnum=1&hl=en#93503c5b9c66226e for an example and some discussion. Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
