[issue22864] Add filter to multiprocessing.Pool
Travis Thieman added the comment: Why is it insufficient to run a synchronous 'filter' over the list returned by 'Pool.map'? These functional constructs are inherently composable, and we should favor composing simple implementations of each rather than implementing special cases of them throughout the stdlib. I think there's a clear reason for 'map' to be parallelizable because the function you're applying over the iterable could be quite expensive. 'filter' would only benefit from this if the comparison you're running is expensive, which seems like an unlikely and ill-advised use case. You can also rewrite your expensive 'filter' as a 'map' if you really need to. -- nosy: +travis.thieman ___ Python tracker <http://bugs.python.org/issue22864> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22536] subprocess should include filename in FileNotFoundError exception
Travis Thieman added the comment: The attached patch includes the first element in args in _execute_child to the OSError exception subclass. This correctly populates the 'filename' field on the resulting exception. A test is also included that fails without the patch. -- keywords: +patch nosy: +travis.thieman Added file: http://bugs.python.org/file37202/22536-subprocess-exception-filename.patch ___ Python tracker <http://bugs.python.org/issue22536> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22536] subprocess should include filename in FileNotFoundError exception
Travis Thieman added the comment: Thank you all for the helpful comments. A revised attempt is attached as -2.patch, with improved behavior around using cwd if the child is never called and orig_executable if it is. I opted not to fix the issue with the redundancy in the error message as I agree that should be handled as a separate issue. -- Added file: http://bugs.python.org/file37322/22536-subprocess-exception-filename-2.patch ___ Python tracker <http://bugs.python.org/issue22536> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
