[issue46465] test_unittest: TestBreakSignalDefault.testInstallHandler() fails if run after TestBreak

[STINNER Victor]

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

Attached bug.py reproduces the bug without unittest, just run:

./python bug.py

On Python 3.10, it writes:
---
LOOP 0
LOOP 1
(...)
LOOP 14
LOOP 15
---

On the main branch, it fails with:
---
LOOP 0
LOOP 1
LOOP 2
LOOP 3
LOOP 4
LOOP 5
LOOP 6
LOOP 7
Traceback (most recent call last):
  File "/home/vstinner/bug.py", line 24, in <module>
    Bug().run()
    ^^^^^^^^^^^
  File "/home/vstinner/bug.py", line 19, in run
    raise Exception("bug")
    ^^^^^^^^^^^^^^^^^^^^^^
Exception: bug
---

----------
Added file: https://bugs.python.org/file50575/bug.py

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<https://bugs.python.org/issue46465>
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