[issue31349] Embedded initialization ignores Py_SetProgramName()

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Modules/getpath.c and PC/getpathp.c have been deeply reworked with the implementation of the PEP 587 in Python 3.8. Parameters which are already set (ex: Py_SetProgramName() or using the new PyConfig API) are no longer overriden. I added some tests on the "path configuration".

The most reliable way to configure the path configuration is now to use the new initialization API using PyConfig.
https://docs.python.org/dev/c-api/init_config.html

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nosy: +vstinner
versions: +Python 3.9 -Python 3.6, Python 3.7

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