After I've seen a co-worker to unpack tuples while using multiprocessing.Pool.map(), I realized that the module is missing a starmap() method like itertools has.I took it as a opportunity to contribute some code and implemented both starmap() and starmap_async().The patch including tests is attached, please let me know, what you think. Please don't call me names, it's my first patch for such a high profile project like Python. ;)

In all my excitement, I somehow presumed that the docstring automagically lands in the docs. Added doc entries to patch (I hope they aren't too crude, I'm not a native speaker).Same as first patch otherwise.

+def starmapstar(args):+    return list(itertools.starmap(args[0], args[1]))Is your new function restricted to 2 arguments?

No, that's just a helper function like the `mapstar` directly above. args[1] is the iterable with tuples that get unpacked as arguments.

This looks like a reasonable request to me, and the patch looks generally ok as well.

One nit: the patch needs "versionadded" tags for the two new functions.

Thanks for the feedback Antoine!I updated the patch to latest default tip and added the requested tags to the docs.

Looks good to me, except for another minor nit:"""the elements of the `iterable` are expected to be tuples"""AFAICT, you just require the elements of `ìterables` to be iterables, not necessarily tuples.

You're right. I've updated the docs accordingly, thanks!

New changesetb07b1e58582d by Antoine Pitrou in branch 'default':Issue#12708: Add starmap() and starmap_async() methods (similar to itertools.starmap()) to multiprocessing.Pool.http://hg.python.org/cpython/rev/b07b1e58582d

Patch committed. Thanks for your contribution!