Nick Coghlan added the comment:
contextlib.suppress provides a contextmanager spelling for the following
pattern:
try:
<body>
except <expr>:
pass
That's a very common pattern worth having in the standard library, even though
it's only a 5 line context manager.
The proposed API change would make it instead an implementation of the vastly
*less* common pattern:
try:
<body>
except <unless-expr>:
raise
except <expr>:
pass
For the use case you're discussing (trying to shut down, potentially failing,
but also not wanting to hide genuine programming errors), I'd be more amenable
to introducing a comparable context manager to the logging module that, instead
of silently ignoring caught exceptions, logged them, and also allowed you to
restrict which exceptions were logged.
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<http://bugs.python.org/issue27814>
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