[Python-Dev] Non-string keys in type dict

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年3月7日 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 "<stdin>", line 1
 A.42
 ^
SyntaxError: invalid syntax
Doesn't seem very useful.
~Ethan~