windows - celery WindowsError : [Error 6] The handle is invalid

Question

我是 celery 的新手，我正在按照他们网站上给出的教程进行操作，但我遇到了这个错误

 from celery import Celery
 app = Celery('tasks', broker='pyamqp://guest@localhost//')

 @app.task
 def add(x, y):
     return x + y

cmd 显示这样的错误

-------------- celery@DESKTOP-O90R45G v4.0.2 (latentcall)
---- **** -----
--- * ***  * -- Windows-10-10.0.14393 2016-12-16 20:05:48
-- * - **** ---
- ** ---------- [config]
- ** ---------- .> app:         tasks:0x4591950
- ** ---------- .> transport:   amqp://guest:**@localhost:5672//
- ** ---------- .> results:     disabled://
- *** --- * --- .> concurrency: 4 (prefork)
-- ******* ---- .> task events: OFF (enable -E to monitor tasks in this worker)
--- ***** -----  -------------- [queues]
                .> celery           exchange=celery(direct) key=celery


[tasks]   . tasks.add

[2016-12-16 20:05:49,029: CRITICAL/MainProcess] Unrecoverable error:
TypeError('argument 1 must be an integer, not _subprocess_handle',)
Traceback (most recent call last):   File
"c:\python27\lib\site-packages\celery\worker\worker.py", line 203, in
start
    self.blueprint.start(self)   File "c:\python27\lib\site-packages\celery\bootsteps.py", line 119, in
start
    step.start(parent)   File "c:\python27\lib\site-packages\celery\bootsteps.py", line 370, in
start
    return self.obj.start()   File "c:\python27\lib\site-packages\celery\concurrency\base.py", line 131,
in start
    self.on_start()   File "c:\python27\lib\site-packages\celery\concurrency\prefork.py", line
112, in on_start
    **self.options)   File "c:\python27\lib\site-packages\billiard\pool.py", line 1008, in
__init__
    self._create_worker_process(i)   File "c:\python27\lib\site-packages\billiard\pool.py", line 1117, in
_create_worker_process
    w.start()   File "c:\python27\lib\site-packages\billiard\process.py", line 122, in
start
    self._popen = self._Popen(self)   File "c:\python27\lib\site-packages\billiard\context.py", line 383, in
_Popen
    return Popen(process_obj)   File "c:\python27\lib\site-packages\billiard\popen_spawn_win32.py", line
64, in __init__
    _winapi.CloseHandle(ht) TypeError: argument 1 must be an integer, not _subprocess_handle Traceback (most recent call last):   File
"<string>", line 1, in <module>   File
"c:\python27\lib\site-packages\billiard\spawn.py", line 159, in
spawn_main
    new_handle = steal_handle(parent_pid, pipe_handle)   File "c:\python27\lib\site-packages\billiard\reduction.py", line 126, in
steal_handle
    _winapi.DUPLICATE_SAME_ACCESS | _winapi.DUPLICATE_CLOSE_SOURCE) >WindowsError: [Error 6] The handle is invalid

Answer 1

从 4.0 开始，Windows 不再支持 Celery，如他们的 Readme 中所述:

Celery is a project with minimal funding, so we don't support Microsoft Windows. Please don't open any issues related to that platform.

不幸的是，这个错误似乎是副作用之一(删除了对进程句柄的支持)

你最好的选择是降级 celery ，先删除它然后:pip install celery==3.1.18