>> That will raise a TypeError in 2.6 but works in 2.7. Is it appropriate and
>> feasible to back port that to Python 2.6? I remember talking about this a
>> while back but I don't remember what we decided and I can't find a bug on the
>> issue.
>
> I don't know about feasible but I think it's (borderline) appropriate.
I fail to see the point there as well. There will be about two more 2.6
releases until we stop fixing bugs in it, and start recommending 2.7.
So who would be helped if such a feature would be added to 2.6?
> There are various other paths that lead to this error and it feels to
> me it's just a long-standing bug that we never took care of until 2.7.
> However, I don't think it needs to support non-ASCII characters in the
> keywords (even though 2.7 does seem to support those).
Is it really necessary to ban them? In the regular keyword argument
syntax (arg=value), the lexer will reject them. If you pass them through
a dictionary, why go through the dictionary and ban those that you don't
like? If the callee also uses the **kw syntax, they may actually be able
to receive them.
Notice that this works also in 2.5:
py> def foo(**kw):pass
...
py> foo(**{'':None})
py> foo(**{'\0':None})
Regards,
Martin
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