小编Sum*_*vat的帖子

我在 python 3.7 中使用多进程池映射，我在使用 docker 容器时遇到如下错误

  multiprocessing.pool.MaybeEncoding Error: Error sending result: '<multiprocessing.pool.ExceptionWithTraceback object at 0x7f8ff58e8110>'. Reason: 'PicklingError("Can't pickle <class 'MemoryError'>: it's not the same object as builtins.MemoryError")'

我正在使用如下代码，

def foo(track):

    track_url = track[1]
    url = requests.get(track_url)
    hashes = fingerprint.fingerprint_worker(
        BytesIO(url.content)
    )
    return True

def worker:
 tracks = [[1, "track_url_1"], [2, "track_url_2"]]

 with multiprocessing.Pool(const.MULTIPROCESSING_POOL_SIZE) as pool:
                pool.map(foo, tracks)
                pool.close()
                pool.terminate()
                pool.join()

MULTIPROCESSING_POOL_SIZE = 1

此错误的完整堆栈跟踪是，

Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1836, in __call__
 return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python3.7/site-packages/flask/app.py", …