[issue46819] Add an Error / Exception / Warning when contextlib.suppress() is entered with no specified exception(s) to suppress

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:

No, I say that

    with suppress():
        ...

is equivalent to

    try:
        ...
    except ():
        pass

or

    try:
        ...
    except BaseException as err:
        if not isinstance(err, ()):
            raise

If you want to suppress all exceptions (it is not very clever idea), use 
suppress(BaseException).

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<https://bugs.python.org/issue46819>
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