[issue7994] object.__format__ should reject format strings

[Eric Smith]

Eric Smith <eric at trueblade.com> added the comment:

I haven't looked at the patch, but:

Thanks for the the additional tests. Missing unicode was definitely a mistake.

str(w[0].message) is an improvement.

The PEP is out of date in many respects. I think it's best to note that in the PEP and continue to keep the documentation up-to-date.

This issue already applies to 3.3, but my plan is to remove that and create a new issue when I close this one. But I'd still like to leave the comments in place.

I'm aware of the existing tests which trigger the warning. I think they should probably be removed, although I haven't really spent much time thinking about it.

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