我正在尝试通过烧瓶邮件通过gevent在Flask中异步发送电子邮件.我正在“在应用程序上下文之外工作”.我知道app.app_context(),但无法使其与我的设置配合使用.

我的应用程序是使用这样的应用程序工厂创建的：

myproject / run_dev.py

from gevent.wsgi import WSGIServer
from my_project.app import create_app
from my_project.config import DevConfig

app = create_app(DevConfig)
http_server = WSGIServer(('', 5000), app)
http_server.serve_forever()

myproject / myproject / app.py

def create_app(config=None, app_name=None, blueprints=None):
    app = Flask(app_name)
    configure_app(app, config)
    <other stuff>
    return app

以及我用来发送电子邮件的代码：

myproject / myproject / mymodule / views.py

@mymodule.route('/some/path/')
def do_something():
    do_stuff(something)

myproject / myproject / mymodule / utils.py

def do_stuff(something):
    send_email(msg)

@async
def send_async_email(msg):
    mail.send(msg)

def send_mail(request_id, recipients, email_type, env=None, pool=None):
    msg = Message(
        sender=sender,
        recipients=recipients,
        subject=subject,
        body=body)
    send_async_email(msg)

myproject / myproject / decorators.py

def async(f):
    def wrapper(*args, **kwargs):
        t = Greenlet.spawn(f, *args, **kwargs)
        gevent.joinall([t])
    return wrapper

我尝试添加：

from myproject.app import create_app
app = create_app()
with app.app_context():
    mail.send(msg)

到send_async_email()但我得到

ImportError: cannot import name create_app

解决方法:

出于历史目的：将myproject.app中的import create_app从myproject.app放入send_async_email内,而不是在其余导入的顶部解决了ImportError,因为它引起了循环依赖.