Question

我可能在某个地方犯了一个小错误，但即使是在multiprocessing.Manager块中（或不使用）使用with的最小示例，有时也会出现错误消息：

import logging
import multiprocessing


def test():
    logger = multiprocessing.log_to_stderr()
    logger.setLevel(logging.INFO)
    with multiprocessing.Manager() as m:
        print("Shutdown")
    print("Done")

if __name__ == "__main__":
    test()

预期的结果（大部分时间）：

[INFO/SyncManager-1] child process calling self.run()
[INFO/SyncManager-1] created temp directory /tmp/pymp-ovckulfx
[INFO/SyncManager-1] manager serving at '/tmp/pymp-ovckulfx/listener-2huadgai'
Shutdown
[INFO/MainProcess] sending shutdown message to manager
[INFO/SyncManager-1] process shutting down
[INFO/SyncManager-1] process exiting with exitcode 0
Done
[INFO/MainProcess] process shutting down

意外结果（有时会发生）：

[INFO/SyncManager-1] child process calling self.run()
[INFO/SyncManager-1] created temp directory /tmp/pymp-1781pg20
[INFO/SyncManager-1] manager serving at '/tmp/pymp-1781pg20/listener-w5fsqqpv'
Shutdown
[INFO/MainProcess] sending shutdown message to manager
[INFO/SyncManager-1] process shutting down
[INFO/SyncManager-1] Failure to send message: ('#RETURN', None)
[INFO/SyncManager-1]  ... request was (None, 'shutdown', (), {})
[INFO/SyncManager-1]  ... exception was BrokenPipeError(32, 'Broken pipe')
[INFO/SyncManager-1] process exiting with exitcode 0
Done
[INFO/MainProcess] process shutting down

我在Linux上使用Python 3.6.5（默认值，2018年7月6日，09：41：10），[GCC 5.4.0 20160609]

Python`multiprocessing.Manager（）`无法正确关闭

0 个答案: