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gh-141617: Add missing result() call in concurrent.futures example #141620

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gh-141617: Add missing result() call in concurrent.futures example
Yashp002 Nov 16, 2025
6dd6b65
gh-141617: Clarify ThreadPoolExecutor deadlock example in docs
Yashp002 Nov 17, 2025
db98031
Address review feedback: remove incorrect comments and fix deadlock e…
Yashp002 Dec 2, 2025
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Yashp002 Dec 2, 2025
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5 changes: 4 additions & 1 deletion Doc/library/concurrent.futures.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ Executor Objects
future = executor.submit(pow, 323, 1235)
print(future.result())


.. method:: map(fn, *iterables, timeout=None, chunksize=1, buffersize=None)

Similar to :func:`map(fn, *iterables) <map>` except:
Expand Down Expand Up @@ -152,7 +153,9 @@ And::

executor = ThreadPoolExecutor(max_workers=1)
executor.submit(wait_on_future)

# Note: calling future.result() here would cause a deadlock because the single
# worker thread is already executing wait_on_future(), which itself is waiting
# for a result from the same executor.

.. class:: ThreadPoolExecutor(max_workers=None, thread_name_prefix='', initializer=None, initargs=())

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