On 8/11/2010 5:37 PM, Terry Reedy wrote: > On 8/11/2010 3:16 PM, Raymond Hettinger wrote: > >> The ability to introspect is basic to Python's design. >> Objects know their class, functions know their code objects, >> bound methods know both their underlying function, >> classes know their own class dictionary, etc. > > Should iterators know their iterable when there is one? > > There is or was a request for this on python-list, I believe, a few days > ago. I suggested bad idea because > a) iterator requirement is intentially minimal > b) not all iterators have underlying object > c) OP wanted to mutate underlying object (list) while iterating > I did give a my_iter class that would do what OP wanted. > Mutation of the underlying iterable is a terrible idea. Imagine the confusion when multiple iterators are active on the same iterable. But I suspect I am preaching to the choir here.
regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 DjangoCon US September 7-9, 2010 http://djangocon.us/ See Python Video! http://python.mirocommunity.org/ Holden Web LLC http://www.holdenweb.com/ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
