commit 6b973747f3c5e31afd89f6a7d79bc9f3f1628710
author Andrew Svetlov <andrew.svetlov@gmail.com> Sat Nov 03 15:36:01 2012 +0200
committer Andrew Svetlov <andrew.svetlov@gmail.com> Sat Nov 03 15:36:01 2012 +0200
tree 10127b702286a312c859d4bf9922716f8ad402bf
parent 0f77bf27ca372655104884bf1e1ecaf014e8a61a

Issue #16284: Prevent keeping unnecessary references to worker functions in concurrent.futures ThreadPoolExecutor.

Lib/concurrent/futures/thread.py

diff --git a/Lib/concurrent/futures/thread.py b/Lib/concurrent/futures/thread.py
index 95bb682..f9beb0f 100644
--- a/Lib/concurrent/futures/thread.py
+++ b/Lib/concurrent/futures/thread.py
@@ -63,6 +63,8 @@
             work_item = work_queue.get(block=True)
             if work_item is not None:
                 work_item.run()
+                # Delete references to object. See issue16284
+                del work_item
                 continue
             executor = executor_reference()
             # Exit if: