[issue13598] string.Formatter doesn't support empty curly braces "{}"

[Roundup Robot]

Roundup Robot added the comment:

New changeset ad74229a6fba by Eric V. Smith in branch '3.4':
Issue #13598: Add auto-numbering of replacement fields to string.Formatter.
http://hg.python.org/cpython/rev/ad74229a6fba

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nosy: +python-dev

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