[issue10021] Format parser is too permissive

[Benjamin Peterson]

Benjamin Peterson <benjamin at python.org> added the comment:

2010/10/4 Eric Smith <report at bugs.python.org>:
>
> Eric Smith <eric at trueblade.com> added the comment:
>
> Right. It seemed like a hassle to have the str.format parser try to figure out what a valid identifier is, so it just passes it through.

You can always use "str.isidentifier()" (I don't remember if there's a capi).

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nosy: +benjamin.peterson

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