Update Misc/NEWS.d/next/Library/2020-03-15-05-41-05.bpo-39360.cmcU5p.rst

Co-Authored-By: Pablo Galindo <[email protected]>
python · Mar 15, 2020 · 207d611 · 207d611
1 parent 548d5fc
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diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
@@ -2785,10 +2785,10 @@ def test_pool_hang(self):
         cmd = '''if 1:
             from multiprocessing import Pool
             class A:
-                def init(self):
+                def __init__(self):
                     self.pool = Pool(processes=1)
             def do_something(x):
-                return x1
+                return x + 1
             problem = A()
             problem.pool.map(do_something, [1,2,3])
         '''

diff --git a/Misc/NEWS.d/next/Library/2020-03-15-05-41-05.bpo-39360.cmcU5p.rst b/Misc/NEWS.d/next/Library/2020-03-15-05-41-05.bpo-39360.cmcU5p.rst
@@ -1,2 +1,3 @@
-Ensure all workers exit when finalizing a :class:`multiprocessing.Pool`.
-Patch by Batuhan Taskaya.
+Ensure all workers exit when finalizing a :class:`multiprocessing.Pool` implicitly via the module finalization
+handlers of multiprocessing. This fixes a deadlock situation that can be experienced when the Pool is not
+properly finalized via the context manager or a call to ``multiprocessing.Pool.terminate``. Patch by Batuhan Taskaya.