Omer Katz added the comment: I just checked and werkzeug uses the same implementation as Django & pip.
2014-04-06 14:31 GMT+04:00 Omer Katz <rep...@bugs.python.org>: > > Omer Katz added the comment: > > The default implementation should simple: > Once the property is accessed for the first time calculate the result and > never calculate again. > It's what both Django & pip uses. > You can add an optional TTL. > There aren't any other features I can come up with that are common enough. > If needed, one can inherit from cached_property and do whatever is needed. > Eric, Why don't you think a C implementation is needed? It's a simple > operation for sure but it is meant to increase runtime efficiency. > > 2014-04-05 1:11 GMT+04:00 Éric Araujo <rep...@bugs.python.org>: > > > > > Éric Araujo added the comment: > > > > It could make sense to add clean, working recipes to e.g. the functools > > documentation. The cached_property in the wiki uses a TTL, other like > > Pyramid's reify decorator make properties that ensure the fget function > is > > called only once per instance, and there may be subtly different variants > > out there. I don't know if there's a universally useful variant that > > should be added to the sdlib right now. (I don't think a C > implementation > > is needed.) > > > > On a related note, the Python docs about desciptors may be missing > > entry-level explanations, as described here: > > http://me.veekun.com/blog/2012/05/23/python-faq-descriptors/ > > > > ---------- > > nosy: +eric.araujo, rhettinger > > > > _______________________________________ > > Python tracker <rep...@bugs.python.org> > > <http://bugs.python.org/issue21145> > > _______________________________________ > > > > ---------- > > _______________________________________ > Python tracker <rep...@bugs.python.org> > <http://bugs.python.org/issue21145> > _______________________________________ > ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21145> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
