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5 changes: 3 additions & 2 deletions Doc/library/sys.rst
Original file line number Diff line number Diff line change
Expand Up @@ -2265,8 +2265,9 @@ always available. Unless explicitly noted otherwise, all variables are read-only

The name of the lock implementation:

* ``"semaphore"``: a lock uses a semaphore
* ``"mutex+cond"``: a lock uses a mutex and a condition variable
* ``"semaphore"``: a lock uses a semaphore (Python 3.14 and older)
* ``"mutex+cond"``: a lock uses a mutex and a condition variable (Python 3.14 and older)
* ``"pymutex"``: a lock uses the :c:type:`PyMutex` implementation (Python 3.15 and newer)
* ``None`` if this information is unknown

.. attribute:: thread_info.version
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