Django, ImportError: cannot import name Celery, possible circular import?

Question

I went through this example here:

http://docs.celeryproject.org/en/latest/django/first-steps-with-django.html

All my tasks are in files called tasks.py.

Answer 1

For someone who want to know what cause this error:
I have meet this problem just now, then I found the problem --- sys.path.
Maybe you add some path to sys.path like me, I add below code in manage.py,

ROOT_PATH = os.path.dirname(os.path.abspath(__file__))
SRC_PATH = os.path.join(ROOT_PATH, 'src')
CONF_PATH = os.path.join(ROOT_PATH, 'conf')

sys.path.insert(0, SRC_PATH)
sys.path.insert(0, CONF_PATH)

so, from celery import Celery would search celery in SRC_PATH and CONF_PATH first, that's the problem.

change to

sys.path.append(SRC_PATH)
sys.path.append(CONF_PATH)

It would search in python's lib and site-packages first. Solved perfectly.