ulrich.stern added the comment:
I still think the documentation should be changed, and an improved version
would look more like your comment than what it looks now. I assume to most
people "owning" means exclusively holding the lock, and a particular thread can
do this for Lock Objects. For example, here what my #1 Google result for "lock
ownership"
(https://www.justsoftwaresolutions.co.uk/threading/locks-mutexes-semaphores.html)
says:
> What it means to "own" a lock depends on the precise type of the lockable
> object. For some lockable objects... In other cases, the definition is more
> fluid, and the ownership of the lock is more conceptual. In these cases,
> ownership can be relinquished by a different thread or object than the thread
> or object that acquired the lock.
In my opinion, the Python documentation currently takes the unusual point of
view "a thread cannot 'own' a lock since it could be 'stolen' (released) by
another thread." And the Lock Objects documentation has no explanation for
this view, which makes it possibly confusing. Since multithreading is often
tricky, documentation improvement seems worthwhile. Happy to propose wording
that incorporates our discussion if you are interested.
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