[issue39200] Fix inaccurate TypeError messages when calling with insufficient arguments

[STINNER Victor]

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

Backport PRs are ready for 3.7 and 3.8. Question: is there a risk of breaking the backward compatibility if a project unit test rely on the exact error message? If yes, maybe it's better to reject the backports and close this issue (only change the error message in 3.9).

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39200>
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