Flask 学习-60.解决celery 启动报错Unable to load celery application.

前言

flask + celery 启动celery服务时报错：
Unable to load celery application.
The module app.celery was not found.

问题描述

执行启动celery worker 命令

celery -A app.celery worker -l info

结果出现报错Unable to load celery application

解决方案

我的app.py代码

from flask import Flask
from celery import Celery

# 基本配置
broker_url = 'redis://localhost:6379'
result_backend = 'redis://localhost:6379'


app = Flask(__name__)
celery_app = Celery(app.import_name,
                    broker=broker_url,
                    backend=result_backend)


@celery_app.task(name='demo/add')
def add(x, y):
    return x + y

由于我定义的Celery 实例名称是celery_app，所以启动的时候应用名称应该改成app.celery_app

 -------------- celery@DESKTOP-HJ487C8 v5.2.7 (dawn-chorus)
--- ***** -----
-- ******* ---- Windows-10-10.0.17134-SP0 2022-09-08 11:11:14
- *** --- * ---
- ** ---------- [config]
- ** ---------- .> app:         app:0x20e6cc88f40

[tasks]
  . demo/add

启动日志看到[tasks]说明正常启动了