classification
Title: multiprocessing.Semaphore has undocumented get_value() method
Type: behavior Stage:
Components: Library (Lib) Versions: Python 3.10
process
Status: open Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: davin, pitrou, remi.lapeyre
Priority: normal Keywords:

Created on 2020-05-27 20:27 by remi.lapeyre, last changed 2020-05-27 23:09 by ned.deily.

Messages (1)
msg370128 - (view) Author: RĂ©mi Lapeyre (remi.lapeyre) * Date: 2020-05-27 20:27
The threading.Semaphore class does not have this method, it is undocumented and useless on some system (at least MacOS):

>>> s.get_value()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/multiprocessing/synchronize.py", line 129, in get_value
    return self._semlock._get_value()
NotImplementedError



The implementation is at https://github.com/python/cpython/blob/master/Modules/_multiprocessing/semaphore.c#L537-L553

I think this method could be removed, since it's undocumented and probably not used can I just remove it or does it need a deprecation cycle?
History
Date User Action Args
2020-05-27 23:09:48ned.deilysetnosy: + pitrou, davin
2020-05-27 20:27:22remi.lapeyrecreate