"Delaney, Timothy (Tim)" <[EMAIL PROTECTED]> writes: > The eventual consensus was that keys(), etc should return views on the > dictionary. These views would be re-iterable and will have basically the > same behaviour as the lists returned from keys(), etc. However, such a > view could have O(1) __contains__ behaviour, and would not incur the > overhead of creating a list and populating it - they would be backed by > the dictionary. Of course, this introduces the issue of concurrent > modification, but you can always get an independent copy by calling > list(dict.keys()).
Wait a sec, you're saying k0 = d.keys() d['whee'] = 'parrot' # this can change k0??? That sounds broken. -- http://mail.python.org/mailman/listinfo/python-list
