启动芹菜：attributeRor:“module”对象没有“芹菜”属性

Question

我尝试从命令行启动芹菜工作服务器：

celery -A tasks worker --loglevel=info

tasks.py中的代码：

import os
os.environ[ 'DJANGO_SETTINGS_MODULE' ] = "proj.settings"

from celery import task

@task()
def add_photos_task( lad_id ):
...

我得到下一个错误：

Traceback (most recent call last):
  File "/usr/local/bin/celery", line 8, in <module>
    load_entry_point('celery==3.0.12', 'console_scripts', 'celery')()
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/__main__.py", line 14, in main
    main()
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/celery.py", line 946, in main
    cmd.execute_from_commandline(argv)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/celery.py", line 890, in execute_from_commandline
    super(CeleryCommand, self).execute_from_commandline(argv)))
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 177, in execute_from_commandline
    argv = self.setup_app_from_commandline(argv)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 295, in setup_app_from_commandline
    self.app = self.find_app(app)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 313, in find_app
    return sym.celery
AttributeError: 'module' object has no attribute 'celery'

有人知道为什么找不到“芹菜”属性吗？谢谢你的帮助。

操作系统是LinuxDebian5。

编辑。可能是线索。有人能给我解释下一个函数的注释吗（为什么我们必须确保它在当前目录中找到模块）？

# from celery/utils/imports.py
def import_from_cwd(module, imp=None, package=None):
    """Import module, but make sure it finds modules
    located in the current directory.

    Modules located in the current directory has
    precedence over modules located in `sys.path`.
    """
    if imp is None:
        imp = importlib.import_module
    with cwd_in_path():
        return imp(module, package=package)

Answer 1

芹菜使用celery文件来存储应用程序的配置，你不能只给python文件一个任务，然后启动芹菜。 您应该定义celery文件（对于芹菜>；3.0；以前是celeryconfig.py）。。

celeryd --app app.celery -l info

这个例子如何用配置文件在app/celery.py启动芹菜

以下是芹菜文件的示例：https://github.com/Kami/libcloud-sandbox/blob/master/celeryconfig.py

Answer 2

对于以明显不同的原因收到相同错误消息的任何人，请注意，如果初始化文件中的任何导入失败，应用程序将引发完全不明确的AttributeError，而不是最初导致它的异常。

Answer 3

我忘记在tasks.py中创建芹菜对象：

from celery import Celery
from celery import task  

celery = Celery('tasks', broker='amqp://guest@localhost//') #!

import os

os.environ[ 'DJANGO_SETTINGS_MODULE' ] = "proj.settings"

@task()
def add_photos_task( lad_id ):
...

之后，我们通常可以开始任务：

celery -A tasks worker --loglevel=info