[issue5237] Allow auto-numbered replacement fields in str.format() strings

[Senthil]

Senthil <orsenthil at gmail.com> added the comment:

Would someone like to point the python-ideas discussion which
rationalizes this request?
And what would be written in the documentation? As much as I
understand this, emptry braces {} for replacement fields is kind of
unseen and leaves much thinking if this can be simplified, just as %
or # or any other character instead of a opening { and closing }.

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message_count: 18.0 -> 19.0
nosy: +orsenthil
nosy_count: 8.0 -> 9.0

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5237>
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