John Roth: > The iter() builtin creates an iterator for any > object that obeys the sequence protocol. > Since strings obey the sequence protocol there > is no real advantage to adding yet another > protocol to an already very fat object.
Okay! > This does, however, mean that testing > for the presence of __iter__ is incomplete; > one also has to test for __getattr__ if the > object doesn't have an __Iter__ method. Should be __getitem__ and not __getattr__!? > Depending on your program logic, it > may be easier to just use iter() and > handle the exception if it fails. Okay, I'll do it this way - except will then raise a TypeError, as I just found in the docs! > See PEP 234 for a discussion of the > reasons for doing it this way. > Thanks for pointing this out! Chris PS: Thanks to all posters in this thread for your illuminative comments! -- http://mail.python.org/mailman/listinfo/python-list
