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

Barry Warsaw barry at python.org
Mon Oct 8 16:19:54 CEST 2012


On Oct 07, 2012, at 11:09 PM, Victor Stinner wrote:

Does anyone know if there is a good reason why PyUnicodeFromFormatV() 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. PyUnicodeFromFormatV() is used by PyErrFormat(), so PyErrFormat() 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.

Cheers, -Barry



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