Mike Hommey <gland...@gmail.com> added the comment:
This is still a problem in python 3.7 (and, I guess 3.8). When not even giving a max_workers, it fails with a ValueError exception on _winapi.WaitForMultipleObjects, with the message "need at most 63 handles, got a sequence of length 63" That happens with max_workers=None and max_workers=61 ; not max_workers=60. I wonder if there's an off-by-one in this test: https://github.com/python/cpython/blob/7668a8bc93c2bd573716d1bea0f52ea520502b28/Modules/_winapi.c#L1708 ---------- nosy: +Mike Hommey _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue26903> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com