picnixz changed the title Make imap()/imap_unordered() in multiprocessing.Pool actually lazy gh-64192: Make imap()/imap_unordered() in multiprocessing.Pool actually lazy

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obaltian changed the title gh-64192: Make imap()/imap_unordered() in multiprocessing.Pool actually lazy gh-64192: Make imap()/imap_unordered() in multiprocessing.pool actually lazy

…e-to-multiprocessing
Note: I also had to add 1 '=' character to `Doc/whatsnew/3.16.rst`
because check-merge-conflict pre-commit hook was detecting legit
markdown syntax as a merge conflict string.

…ultiprocessing.pool` (pythonGH-136871)
The new argument allows consuming the input iterator lazily, potentially
saving memory, and allowing long/infinite iterators.
It mirrors the *buffersize* argument to `concurrent.futures.Executor.map`
that was added in 3.14.
Co-authored-by: Oleksandr Baltian <oleksandr.baltian@maklai.com.ua>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Sasha Baltian <sasha.baltian@hyperexponential.com>