五分钟看懂Celery定时任务

pip install django

pip install django-celery

django-admin.py startproject dc_test       # 创建工程

django-admin.py stratapp projectmanageapp      # 创建app

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'demo',
    'djcelery'           # 添加  djcelery应用
)        

from datetime import timedelta


CELERYBEAT_SCHEDULE = {
    'add-every-30-seconds': {
        'task': 'demo.tasks.hello_world',
        'schedule': timedelta(seconds=2),
    },
}

from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
from django.conf import settings

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dc_test.settings')

app = Celery('dc_test')

# Using a string here means the worker don't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object('django.conf:settings')

# Load task modules from all registered Django app configs.
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)


@app.task(bind=True)
def debug_task(self):
    print('Request: {0!r}'.format(self.request))

from __future__ import absolute_import, unicode_literals

from .celery import app as celery_app

__all__ = ['celery_app']

from __future__ import absolute_import, unicode_literals
from celery import shared_task

@shared_task
def hello_world():
    with open("D:\dc_test\output.txt", "a") as f:
        f.write("hello world")
        f.write("\n")

celerybeat-schedule.bak

celerybeat-schedule.dat

celerybeat-schedule.dir

python manage.py celery worker -l info

python manage.py ceery beat