[issue44887] test_input_tty hangs when run multiple times in the same process on macOS 10.15

[Łukasz Langa]

Łukasz Langa <lukasz at langa.pl> added the comment:

The doctest runner sets an output redirecting debugger, which subclasses Pdb, around actually running the doctest. This action causes the hang. New finding, we can hang the test with test_pdb too:

$ python3.9 -m test test_pdb test_builtin -v

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<https://bugs.python.org/issue44887>
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