如何在现有的 Flask 应用程序中使用 Flask-APScheduler

Question

我正在尝试通过以下示例代码熟悉Flask-APScheduler插件：https://github.com/viniciuschiele/flask-apscheduler/blob/master/examples/jobs.py#L1

我的项目结构如下：

backend
    run.py
    application
        __init__.py
        utilities
            __init__.py
            views
            models

其中，

backend>run.py 是：

from application import app
app.run(debug=True)
from application import scheduler
scheduler.start()

backend>application>__init__.py 是：

from flask import Flask
app = Flask(__name__)
from application.utilities.views import Config
from flask_apscheduler import APScheduler
app.config.from_object(Config())
scheduler = APScheduler()
scheduler.init_app(app)

backend>application>utilities>__init__.py为空

backend>application>utilities>models.py为空

backend>application>utilities>views.py 是：

class Config(object):
    JOBS = [
        {
            'id': 'job1',
            'func': 'application:utilities:views:job1',
            'args': (1, 2),
            'trigger': {
                'type': 'cron',
                'second': 10
            }
        }
    ]

def job1(a, b):
    print(str(a) + ' ' + str(b))

但是，我收到以下错误：

(env)$ python run.py local
Traceback (most recent call last):
  File "run.py", line 1, in <module>
    from application import app
  File "HOME/backend/application/__init__.py", line 106, in <module>
    scheduler.init_app(app)
  File "/home/xxxxxx/.anaconda/envs/env/lib/python2.7/site-packages/flask_apscheduler/scheduler.py", line 73, in init_app
    self.__load_jobs(app)
  File "/home/xxxxxx/.anaconda/envs/env/lib/python2.7/site-packages/flask_apscheduler/scheduler.py", line 136, in __load_jobs
    self.__load_job(job, app)
  File "/home/xxxxxx/.anaconda/envs/env/lib/python2.7/site-packages/flask_apscheduler/scheduler.py", line 159, in __load_job
    func = ref_to_obj(func)
  File "/home/xxxxxx/.anaconda/envs/env/lib/python2.7/site-packages/apscheduler/util.py", line 264, in ref_to_obj
    raise LookupError('Error resolving reference %s: error looking up object' % ref)
LookupError: Error resolving reference application:utilities:views:job1: error looking up object

我的结构看起来不错吗？是否在正确的位置放置了正确的代码？我应该更改什么才能使其正常工作？

Answer 1

您的推荐信应该只有一个冒号（“:”）。冒号将所需的导入与必须查找的变量分开。所以：

'func': 'application.utilities.views:job1'

如何在现有的 Flask 应用程序中使用 Flask-APScheduler

How to use Flask-APScheduler in existed Flask app

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