Steven Bethard <steven.bethard <at> gmail.com> writes: > > P.S. If you haven't already, you should read > http://users.rcn.com/python/download/Descriptor.htm a couple of times. > It took me until about the third time I read it to really understand > what descriptors were doing. The big thing to remember is that for an > instance b, > b.x > is equivalent to > type(b).__dict__['x'].__get__(b, type(b)) > and for a class B, > B.x > is equivalent to > B.__dict__['x'].__get__(None, B) > Note that 'x' is always retrieved from the *type* __dict__, not from the > *instance* __dict__.
Steve, and others, thanks for the help. This and Michael Spencer's reply at http://article.gmane.org/gmane.comp.python.general/390478 have been very helpful in getting the descriptor definition clear. For me, it has taken reading http://users.rcn.com/python/download/Descriptor.htm about 4 times along with your help to get this straight. Peace, David S. -- http://mail.python.org/mailman/listinfo/python-list
