I have a project name called ShippingApp and I followed the steps to set up the celery worker. I am using celery 3.1.26.post2 with python3.7 and when I want to start the Celery Worker I am getting the error below:
E:\ShippingApp>celery -A ShippingApp worker -l info
Traceback (most recent call last):
File "c:\program files\python37\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "c:\program files\python37\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Program Files\Python37\Scripts\celery.exe\__main__.py", line 9, in <module>
File "c:\program files\python37\lib\site-packages\celery\__main__.py", line 30, in main
main()
File "c:\program files\python37\lib\site-packages\celery\bin\celery.py", line 81, in main
cmd.execute_from_commandline(argv)
File "c:\program files\python37\lib\site-packages\celery\bin\celery.py", line 793, in execute_from_commandline
super(CeleryCommand, self).execute_from_commandline(argv)))
File "c:\program files\python37\lib\site-packages\celery\bin\base.py", line 309, in execute_from_commandline
argv = self.setup_app_from_commandline(argv)
File "c:\program files\python37\lib\site-packages\celery\bin\base.py", line 469, in setup_app_from_commandline
self.app = self.find_app(app)
File "c:\program files\python37\lib\site-packages\celery\bin\base.py", line 489, in find_app
return find_app(app, symbol_by_name=self.symbol_by_name)
File "c:\program files\python37\lib\site-packages\celery\app\utils.py", line 235, in find_app
sym = symbol_by_name(app, imp=imp)
File "c:\program files\python37\lib\site-packages\celery\bin\base.py", line 492, in symbol_by_name
return symbol_by_name(name, imp=imp)
File "c:\program files\python37\lib\site-packages\kombu\utils\__init__.py", line 96, in symbol_by_name
module = imp(module_name, package=package, **kwargs)
File "c:\program files\python37\lib\site-packages\celery\utils\imports.py", line 101, in import_from_cwd
return imp(module, package=package)
File "c:\program files\python37\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "E:\ShippingApp\ShippingApp\__init__.py", line 2, in <module>
from .celery import app as celery_app
File "E:\ShippingApp\ShippingApp\celery.py", line 6, in <module>
app.config_from_object('django.conf:settings', namespace='CELERY')
TypeError: config_from_object() got an unexpected keyword argument 'namespace'
celery.py:
import os
from celery import Celery
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
app = Celery('mysite')
app.config_from_object('django.conf:settings', namespace='CELERY')
app.autodiscover_tasks()
init.py:
from .celery import app as celery_app
tasks.py:
from celery import task
from django.core.mail import send_mail
from .models import Order
@task
def order_created(order_id):
"""
Task to send an e-mail notification when an order is
successfully created.
"""
order = Order.objects.get(id=order_id)
subject = 'Order nr. {}'.format(order.id)
message = 'Dear {},\n\nYou have successfully placed an order.\
Your order id is {}.'.format(order.first_name,
order.id)
mail_sent = send_mail(subject,
message,
'[email protected]',
[order.email])
return mail_sent
In the orders view, we have the code below:
def order_create(request):
cart = Cart(request)
if request.method == 'POST':
form = OrderCreateForm(request.POST)
if form.is_valid():
order = form.save()
for item in cart:
OrderItem.objects.create(order=order,
product=item['product'],
price=item['price'],
quantity=item['quantity'])
# clear the cart
cart.clear()
# launch asynchronous task
order_created.delay(order.id)
# set the order in the session
request.session['order_id'] = order.id
# redirect for payment
return redirect(reverse('payment:process'))
else:
form = OrderCreateForm()
return render(request,
'orders/order/create.html',
{'cart': cart, 'form': form})
Before I was using celery 4.2.1 but it was not compatible with windows 10 and I uninstall it and install the version 3.1.26.post2. Please assist.
The uppercase namespace means that all celery configurations must be specified with uppercase instead of lowercase, and start with CELERY_, so that for example, task_always_eager settings becomes CELERY_TASK_ALWAYS_EAGER, and the broker_url becomes CELERY_BROKER_URL ans so on. This configuration was introduced from celery4.0 onwards.
So, for version <4 you don't need namespace
in line:
app.config_from_object('django.conf:settings', namespace='CELERY')
Replace the above with:
app.config_from_object('django.conf:settings')
NOTE: If you use celery 3.1, please check your Django version. It should be <1.8