[issue41034] test_builtin: PtyTests fail when run twice

[STINNER Victor]

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

I also reproduce the issue on RHEL 8 with readline 7.0.

But the issue is hidden if stdout is not a TTY. I use "| cat", so Python stdout is a pipe:

$ ./python -m test test_readline test_builtin -v|cat
(...)
Tests result: SUCCESS

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<https://bugs.python.org/issue41034>
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