[Python-Dev] Non-string keys in type dict (original) (raw)

Ethan Furman ethan at stoneleaf.us
Thu Mar 8 08:46:34 CET 2012

Nick Coghlan wrote:

On Thu, Mar 8, 2012 at 11:42 AM, Benjamin Peterson <benjamin at python.org> wrote:

2012/3/7 Victor Stinner <victor.stinner at gmail.com>:

Can't we simply raise an error if the dict contains non-string keys? Sounds okay to me. For 3.3, the most we can do is trigger a deprecation warning, since removing this feature will break currently running code. I don't have any objection to us starting down that path, though.

I think it would be sad to lose that functionality.

If we are going to, though, we may as well check the string to make sure it's a valid identifier:

--> class A: --> pass --> setattr(A, '42', 'hrm') --> A.42 File "", line 1 A.42 ^ SyntaxError: invalid syntax

Doesn't seem very useful.

Ethan

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