New submission from Hanish <hanish0...@gmail.com>:

There seems to an error in the `f-string` error description when one do:


>>> f'{1:,,}'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Cannot specify both ',' and '_'.
>>> 

The error seems to be that, i am not specifying both ',' and '_', but it does 
seem to think so.

This also seems to be happening for `str.format`:

>>> '{:,,}'.format(1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: Cannot specify both ',' and '_'.


So i was just wondering if this is an issue worth raising :)


Thank you

----------
components: Interpreter Core
messages: 376160
nosy: eric.smith, han-solo
priority: normal
severity: normal
status: open
title: f-string error description seems wrong
type: enhancement
versions: Python 3.10, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue41681>
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