On 6 Aug., 22:07, John Posner <jjpos...@optimum.net> wrote: > On 8/2/2010 11:00 PM, John Posner wrote: > > > On 7/31/2010 1:31 PM, John Posner wrote: > > >> Caveat -- there's another description of defaultdict here: > > >>http://docs.python.org/library/collections.html#collections.defaultdict > > >> ... and it's bogus. This other description claims that __missing__ is a > >> method of defaultdict, not of dict. > > > Following is a possible replacement for the bogus description. Comments > > welcome. I intend to submit a Python doc bug, and I'd like to have a > > clean alternative to propose. > > After some off-list discussion with Ethan Furman (many thanks!), the > Python Doc bug is submitted: #9536 at bugs.python.org. > > -John
This is probably nitpicking, but the patch calls __missing__ a special method. However, unlike special methods, it is not invoked by "special syntax" but by the dict's __getitem__ method. (len() invokes __len__ on any object - you can't do something similar with __missing__.) __missing__ is also not listed as a special method on http://docs.python.org/py3k/reference/datamodel.html#special-method-names However, "normal" special method lookup seems to be used. -- http://mail.python.org/mailman/listinfo/python-list
