celery-django 找不到设置

Question

我有一个 Django 项目，它使用 Celery 来运行异步任务。我正在 Windows XP 机器上进行开发。

启动我的 Django 服务器 (python manage.py runserver 80) 工作正常，但尝试启动 Celery 守护进程 (python manage.py celeryd start) 失败并出现以下错误：

ImportError: 无法导入设置“src.settings”（它在 sys.path 上吗？是否有语法错误？）：没有名为 src.settings 的模块

sys.path 包含 'C:\development\SpaceCorps\src'，所以我不知道为什么它找不到这个模块。

这是启动守护进程的完整输出：

C:\development\SpaceCorps\src>python manage.py celeryd start
[2010-07-23 18:29:31,456: WARNING/MainProcess] ?[1;33mcelery@mike-laptop v2.0.1 is starting.?[0m
[2010-07-23 18:29:31,456: WARNING/MainProcess] ?[1;33mC:\Program Files\Python26\lib\site-packages\celery-2.0.1-py2.6.egg\celery\bin\celeryd.py:206: UserWarning: Using settings.DEBUG leads to a memory leak, never use this setting in a production environment!
  warnings.warn("Using settings.DEBUG leads to a memory leak, "?[0m
[2010-07-23 18:29:31,456: WARNING/MainProcess] ?[1;33mConfiguration ->
    . broker -> amqp://guest@localhost:5672/
    . queues ->
    . celery -> exchange:celery (direct) binding:celery
    . concurrency -> 2
    . loader -> djcelery.loaders.DjangoLoader
    . logfile -> [stderr]@WARNING
    . events -> OFF
    . beat -> OFF?[0m
[2010-07-23 18:29:31,706: WARNING/MainProcess] ?[1;33mcelery@mike-laptop has started.?[0m
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Program Files\Python26\lib\multiprocessing\forking.py", line 342, in main
    self = load(from_parent)
  File "C:\Program Files\Python26\lib\pickle.py", line 1370, in load
    return Unpickler(file).load()
  File "C:\Program Files\Python26\lib\pickle.py", line 858, in load
Traceback (most recent call last):
  File "<string>", line 1, in <module>
    dispatch[key](self)
  File "C:\Program Files\Python26\lib\pickle.py", line 1090, in load_global
  File "C:\Program Files\Python26\lib\multiprocessing\forking.py", line 342, in main
    self = load(from_parent)
  File "C:\Program Files\Python26\lib\pickle.py", line 1370, in load
    klass = self.find_class(module, name)
  File "C:\Program Files\Python26\lib\pickle.py", line 1124, in find_class
    return Unpickler(file).load()
  File "C:\Program Files\Python26\lib\pickle.py", line 858, in load
    dispatch[key](self)
  File "C:\Program Files\Python26\lib\pickle.py", line 1090, in load_global
    __import__(module)
  File "C:\Program Files\Python26\lib\site-packages\celery-2.0.1-py2.6.egg\celery\concurrency\processes\__init__.py", line 7, in <module>
    from celery import log
  File "C:\Program Files\Python26\lib\site-packages\celery-2.0.1-py2.6.egg\celery\log.py", line 8, in <module>
    from celery import conf
  File "C:\Program Files\Python26\lib\site-packages\celery-2.0.1-py2.6.egg\celery\conf.py", line 118, in <module>
    ALWAYS_EAGER = _get("CELERY_ALWAYS_EAGER")
  File "C:\Program Files\Python26\lib\site-packages\celery-2.0.1-py2.6.egg\celery\conf.py", line 109, in _get
    value = getattr(settings, alias)
  File "c:\development\django\django\utils\functional.py", line 276, in __getattr__
    self._setup()
  File "c:\development\django\django\conf\__init__.py", line 40, in _setup
    self._wrapped = Settings(settings_module)
  File "c:\development\django\django\conf\__init__.py", line 75, in __init__
    raise ImportError("Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e))
ImportError: Could not import settings 'src.settings' (Is it on sys.path? Does it have syntax errors?): No module named src.settings

Answer 1

显然这是running Celery on Windows 的问题。使用 --settings 参数 ala python manage.py celeryd start --settings=settings 就可以了。

Answer 2

sys.path 必须包含 'C:\development\SpaceCorps' 而不是 'C:\development\SpaceCorps\src'， 因为他正在寻找 src.settings，而不仅仅是设置。