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`AcquirerProxy` object has no attribute `locked`

ccaruceru

Bug report

Bug description:

According to the documentation, both multiprocessing.Manager.Lock and RLock should be the equivalent of an threading.Lock and RLock, but the underlying AcquirerProxy is missing the implementation of the .locked() method to query the state of the lock.

E.g.

from multiprocessing import Manager
from threading import Lock

if __name__ == "__main__":
    lock_th = Lock()
    lock_th.locked()  # this one works

    with Manager() as manager:
        lock_man = manager.Lock()
        lock_man.locked()  # this throws an "AttributeError: 'AcquirerProxy' object has no attribute 'locked'"

CPython versions tested on:

3.11, 3.12

Operating systems tested on:

Linux, macOS

Linked PRs