[issue11271] concurrent.futures.ProcessPoolExecutor.map() doesn't batch function arguments by chunks

[Dan O'Reilly]

Dan O'Reilly added the comment:

I've attached an updated patch based on your review comments; there's now a unit test with a non-default chunksize, the chunking algorithm is more readable, and the same code path is used no matter what chunksize is provided.

I've also updated the test script to match the implementation changes.

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Added file: http://bugs.python.org/file36184/map_chunksize_with_test.patch

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