How important is it to have the default in this API? __getitem__() doesn't have a default; instead, there's a separate API get() that provides a default (and I find defaulting to None more manageable than the "_default = object()" pattern).
--Guido On 7/8/07, Walter Dörwald <[EMAIL PROTECTED]> wrote: > I'd like to propose the following addition to itertools: A function > itertools.getitem() which is basically equivalent to the following > python code: > > _default = object() > > def getitem(iterable, index, default=_default): > try: > return list(iterable)[index] > except IndexError: > if default is _default: > raise > return default > > but without materializing the complete list. Negative indexes are > supported too (this requires additional temporary storage for abs(index) > objects). > > The patch is available at http://bugs.python.org/1749857 > > Servus, > Walter > _______________________________________________ > 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/guido%40python.org > -- --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ 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
