New submission from Reeyarn Li <reey...@gmail.com>:
I just run the sample code from multiprocessing's documentation page: #https://docs.python.org/3/library/multiprocessing.html from multiprocessing import Pool def f(x): return x*x with Pool(5) as p: print(p.map(f, [1, 2, 3])) ## end of code And it cannot run, with the following error messages: Process SpawnPoolWorker-2: Traceback (most recent call last): File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py", line 315, in _bootstrap self.run() File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/multiprocessing/process.py", line 108, in run self._target(*self._args, **self._kwargs) File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/multiprocessing/pool.py", line 114, in worker task = get() File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/multiprocessing/queues.py", line 358, in get return _ForkingPickler.loads(res) AttributeError: Can't get attribute 'f' on <module '__main__' (built-in)> ---------- components: macOS messages: 383565 nosy: ned.deily, reeyarn, ronaldoussoren priority: normal severity: normal status: open title: AttributeError when running multiprocessing on MacOS 11 with Apple Silicon (M1) versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue42708> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
