[issue39424] [easy] test_signal: test_pidfd_send_signal() uses deprecated assertRaisesRegexp() method

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


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title: test_signal: test_pidfd_send_signal() uses deprecated assertRaisesRegexp() method -> [easy] test_signal: test_pidfd_send_signal() uses deprecated assertRaisesRegexp() method

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39424>
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