[issue35293] make doctest (Sphinx) emits a lot of warnings

[STINNER Victor]

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


New changeset 9e73cac173e5e9010bd18c8334fffeee1cade3a4 by Victor Stinner in branch '3.9':
bpo-35293: Travis CI uses "make venv" for the doc (GH-22307) (GH-22309)
https://github.com/python/cpython/commit/9e73cac173e5e9010bd18c8334fffeee1cade3a4


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