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Add warning to Thread.run() docstring so that users are aware Thread.start() is the correct way to start a thread #150833

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Add warning to Thread.run() docstring so that users are aware Thread.start() is the correct way to start a thread #150833

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1727e76
Update threading.py
radiantsb Jun 3, 2026
21c2d79
Update threading.rst
radiantsb Jun 4, 2026
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2 changes: 1 addition & 1 deletion Doc/library/threading.rst
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Expand Up @@ -578,7 +578,7 @@ since it is impossible to detect the termination of alien threads.

.. method:: run()

Method representing the thread's activity.
Method representing the thread's activity. Use Thread.start() to start a thread's execution

You may override this method in a subclass. The standard :meth:`run`
method invokes the callable object passed to the object's constructor as
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2 changes: 1 addition & 1 deletion Lib/threading.py
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Expand Up @@ -1147,7 +1147,7 @@ def start(self):
self._started.wait() # Will set ident and native_id

def run(self):
"""Method representing the thread's activity.
"""Method representing the thread's activity. Use Thread.start() to start a thread's execution

You may override this method in a subclass. The standard run() method
invokes the callable object passed to the object's constructor as the
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