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Mon Oct 8 23:23:59 CEST 2012 · https://mail.python.org/pipermail/python-dev/2012-October/122121.html

2012/10/8 Barry Warsaw <barry at python.org>:
>>Does anyone know if there is a good reason why PyUnicode_FromFormatV()
>>does not fail on invalid format string, but copies the format string
>>as-if into the result?
>>
>>I would like to change this to raise a ValueError instead.
>>PyUnicode_FromFormatV() is used by PyErr_Format(), so PyErr_Format()
>>may now fail with a ValueError if the format string is invalid.
>
> This behavior is inherited from PyUnicode_FromFormat() which documents the
> current behavior, so you can't change this in backward incompatible way.

Yes, the current behaviour is documented, but I consider it as a bug. Would
it be possible to change the behaviour to fix a "bug"?

Victor
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Showing content from https://mail.python.org/pipermail/python-dev/2012-October/122121.html below:

[Python-Dev] Issue #16153: PyUnicode_FromFormatV() must fail if the format string is invalid