Le Wed, 11 Sep 2013 07:48:56 -0700, Ethan Furman <et...@stoneleaf.us> a écrit : > On 09/11/2013 06:58 AM, Victor Stinner wrote: > > > > The os.environ mapping uses a subclass of MutableMapping which > > accepts 4 functions: encoder/decoder for the key and encoder/decoder > > for the value. Such type is even more generic. transformdict cannot > > replace os._Environ. > > True, it's more generic -- but is it used more often? Or often > enough to have those four functions be part of transformdict instead > of just the one encodekey function? (I mean the idea of os._Environ, > not that specific implementation.) > > Personally, I wouldn't mind having all four; for one thing, the name > 'transformdict' would then be entirely appropriate. ;)
The key decoder function is quite useless since the original key is retained. As for the value encoder/decoder, I don't really see the point: just store whichever value you want to retrieve later. The main point of transformdict is that the *lookup* is done using a different key than the user-provided key. Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
