Estoy tratando de ejecutar un comando simple que adivina el género por nombre usando multiprocesamiento. Este código funcionó en una máquina anterior, por lo que tal vez mi configuración tuvo algo que ver con eso.

A continuación se muestra mi código de multiprocesamiento:

import sys
import gender_guesser.detector as gender
import multiprocessing
import time

d = gender.Detector()

def guess_gender (name):
    n = name.title() # make first letter upper case and the rest lower case 
    g = d.get_gender(n) # guess gender
    return g

ls = ['john','joe','amamda','derick','peter','ashley','john','joe','amamda','derick','peter','ashley']

t=time.time()

results=[]
def callBack(x):
    results.append(x)

pool = multiprocessing.Pool(processes=multiprocessing.cpu_count()-1, maxtasksperchild=1)

for n in ls:
    print (n)
    pool.apply_async(guess_gender,args=[n],callback=callBack)

pool.close()
pool.join()

results = pd.concat(results)

print(time.time()-t)

Simplemente se ejecuta y no hace nada. En mi ventana de cmd, veo lo siguiente al final de un mensaje de error:

AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>

Estoy ejecutando Python versión 3.6.1 en Anaconda:

import sys
print(sys.version)
3.6.1 |Anaconda 4.4.0 (64-bit)| (default, May 11 2017, 13:25:24) [MSC v.1900 64 bit (AMD64)]

Actualización: Todavía no puedo hacer que funcione. A continuación se muestra el registro de cmd completo cuando ejecuté el código proporcionado. Agradezco cualquier pensamiento que pueda tener!

C:\Users\ywu\Google Drive>jupyter notebook
[I 10:13:43.954 NotebookApp] Serving notebooks from local directory: C:\Users\ywu\Google Drive
[I 10:13:43.954 NotebookApp] 0 active kernels
[I 10:13:43.955 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/?token=255a5c0c9af337a1c2187feb63f1c426fb903e5929a0b2f0
[I 10:13:43.956 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 10:13:43.959 NotebookApp]

    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=255a5c0c9af337a1c2187feb63f1c426fb903e5929a0b2f0
[I 10:13:44.264 NotebookApp] Accepting one-time-token-authenticated connection from ::1
[W 10:13:44.319 NotebookApp] 404 GET /api/kernels/aceb78ee-73e4-4481-9993-63e5ee8f72cb/channels?session_id=AEA3C6B2B0A440FC84FF3BAF5F5CB615 (127.0.0.1): Kernel does not exist: aceb78ee-73e4-4481-9993-63e5ee8f72cb
[W 10:13:44.328 NotebookApp] 404 GET /api/kernels/aceb78ee-73e4-4481-9993-63e5ee8f72cb/channels?session_id=AEA3C6B2B0A440FC84FF3BAF5F5CB615 (127.0.0.1) 20.07ms referer=None
[I 10:13:54.740 NotebookApp] Creating new notebook in /code/python
[I 10:13:55.241 NotebookApp] Kernel started: 45ab2da6-7466-408c-aa5a-98f7db54e711
[W 10:14:00.341 NotebookApp] Replacing stale connection: aceb78ee-73e4-4481-9993-63e5ee8f72cb:AEA3C6B2B0A440FC84FF3BAF5F5CB615
Process SpawnPoolWorker-2:
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
Process SpawnPoolWorker-1:
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
Process SpawnPoolWorker-4:
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
Process SpawnPoolWorker-3:
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
Process SpawnPoolWorker-5:
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
Process SpawnPoolWorker-6:
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
Traceback (most recent call last):
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
Process SpawnPoolWorker-7:
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
Process SpawnPoolWorker-8:
Process SpawnPoolWorker-9:
Process SpawnPoolWorker-10:
Traceback (most recent call last):
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
Traceback (most recent call last):
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
Process SpawnPoolWorker-11:
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
Process SpawnPoolWorker-14:
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
Traceback (most recent call last):
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
Traceback (most recent call last):
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\pool.py", line 108, in worker
    task = get()
  File "C:\Users\ywu\AppData\Local\Continuum\Anaconda3\lib\multiprocessing\queues.py", line 345, in get
    return _ForkingPickler.loads(res)
AttributeError: Can't get attribute 'guess_gender' on <module '__main__' (built-in)>
[W 10:14:15.043 NotebookApp] 404 GET /api/kernels/c1224db6-69c6-470e-b74c-4c7b94fb48fe/channels?session_id=D8DC8A440B044EED8EBCA374EBEAF7C6 (127.0.0.1): Kernel does not exist: c1224db6-69c6-470e-b74c-4c7b94fb48fe
[W 10:14:15.046 NotebookApp] 404 GET /api/kernels/c1224db6-69c6-470e-b74c-4c7b94fb48fe/channels?session_id=D8DC8A440B044EED8EBCA374EBEAF7C6 (127.0.0.1) 7.48ms referer=None