On 09/14/2013 03:27 AM, Antoine Pitrou wrote:
On Fri, 13 Sep 2013 21:59:11 -0700
Ethan Furman <et...@stoneleaf.us> wrote:
I mean - given no function to retrieve the canonical key,
one would have to resort to:
my_key = data.__transform__(given_key)
for key, value in data.items():
if data.__transform__(key) == my_key:
....
Which is exactly why I, and others, would like to have the transform function
easily available. Besides being able to
use it to get a canonical key, one could use it to get the function itself.
Yay, introspection!
Well, no, you misunderstand :) The transform function takes an
original key (perhaps "canonical") and returns the transformed key, it
can't do the reverse which is what getitem() does. i.e.:
Argh, of course you are right.
Still, I think it would be useful to expose the transform function. Any good
reason not to?
--
~Ethan~
_______________________________________________
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