Author vstinner
Recipients ZackerySpytz, graingert, matrixise, serhiy.storchaka, vstinner
Date 2019-05-22.21:45:57
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Message-id <1558561557.16.0.219529956893.issue36829@roundup.psfhosted.org>
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In PR 13490, Thomas Grainger proposed a cool context manager:

@contextlib.contextmanager
def throw_unraisable_exceptions():
    unraisable = None
    old_hook = sys.unraisablehook

    def hook(exc):
        nonlocal unraisable
        unraisable = exc

    sys.unraisablehook = hook
    try:
        yield
        if unraisable is not None:
            raise unraisable
    finally:
        unraisable = None
        sys.unraisablehook = old_hook

It allows to raise an unraisable exception :-D Example:

try:
    with support.throw_unraisable_exceptions():
        ...
except Exception as e:
    ... # the exception is now here

I don't need such context manager right now, but I like the fact that it becomes possible to write such context manager :-)
History
Date User Action Args
2019-05-22 21:45:57vstinnersetrecipients: + vstinner, serhiy.storchaka, graingert, matrixise, ZackerySpytz
2019-05-22 21:45:57vstinnersetmessageid: <1558561557.16.0.219529956893.issue36829@roundup.psfhosted.org>
2019-05-22 21:45:57vstinnerlinkissue36829 messages
2019-05-22 21:45:57vstinnercreate