On Jan 29, 8:03 pm, Terry Reedy <tjre...@udel.edu> wrote: > Erik Max Francis wrote: > > mark.sea...@gmail.com wrote: > > >> Is there a way to lock down myInst so that it still refers to the > >> original object, and is there some special member that will allow me > >> to override the equals operator in this case? Or is that simply > >> blasphemous against everything Python holds sacred? Certainly there > >> is some keyword that I don't know about. > > > No. The assignment operator with a bare name on the left hand side is > > not overridable. > > So that 'name = ob' *always* binds name to ob. That is one thing one > can depend on when reading Python code. > > > You can override attribute access, however, with > > .__getattr__/.__getattribute__. > > I presume that you have over-riden __setitem__ in addition to > __getitem__ so that myOb[0] = 1 sets the bit. You could add a branch to > __setitem__ (or define __setslice__ in 2.x) so that myOb[:] = 0x55 does > just what you want it to -- set all bits. Being able to get/set > contiguous bits might be something you want anyway. > > tjr > > PS. When asking about internal details, specify version of interest, as > there have been minor changes.
OK. Thanks for your advice. -- http://mail.python.org/mailman/listinfo/python-list
