I run this example and I get following error on windows:
[2016-11-23 14:01:44,552: CRITICAL/MainProcess] Unrecoverable error: AttributeError("Can't pickle local object 'Pool.init..Process'",)
Traceback (most recent call last):
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\celery\worker\worker.py", line 203, in start
self.blueprint.start(self)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\celery\bootsteps.py", line 119, in start
step.start(parent)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\celery\bootsteps.py", line 370, in start
return self.obj.start()
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\celery\concurrency\base.py", line 131, in start
self.on_start()
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\celery\concurrency\prefork.py", line 112, in on_start
**self.options)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\pool.py", line 1008, in init
self._create_worker_process(i)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\pool.py", line 1117, in _create_worker_process
w.start()
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\process.py", line 122, in start
self._popen = self._Popen(self)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\context.py", line 383, in _Popen
return Popen(process_obj)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\popen_spawn_win32.py", line 79, in init
reduction.dump(process_obj, to_child)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\reduction.py", line 99, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'Pool.init..Process'
(wat) C:\ProjectDjango\celeryTest\src>Traceback (most recent call last):
File "", line 1, in
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\spawn.py", line 159, in spawn_main
new_handle = steal_handle(parent_pid, pipe_handle)
File "c:\python_environments\pmp_shield_env_veces\lib\site-packages\billiard\reduction.py", line 126, in steal_handle
_winapi.DUPLICATE_SAME_ACCESS | _winapi.DUPLICATE_CLOSE_SOURCE)
PermissionError: [WinError 5] Access is denied