[英]Gunicorn import error: url_for not found in flask, but native flask run works fine
I can run my flask app fine using flask's built-in web server command run(), but I'm receiving the following Import error while trying to run my app using gunicorn. 我可以使用flask的内置网络服务器命令run()来运行我的flask应用程序,但是尝试使用gunicorn运行我的应用程序时,我收到以下导入错误。 I use the command gunicorn project.app:app from the mainfolder.
我使用主文件夹中的命令gunicorn project.app:app。
The error being thrown off from views.py is: 从views.py抛出的错误是:
from app import db, url_for ImportError: cannot import name url_for
My app is organized as follows: 我的应用程序组织如下:
mainfolder/
Procfile
bin
project/
app.py
_config.py
views.py
run.py
run.py run.py
from views import app
import os
port = int(os.environ.get('PORT', 5000))
app.run(host='0.0.0.0', port=port)
app.py app.py
from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy
import os
app = Flask(__name__)
app.config.from_pyfile('_config.py')
db = SQLAlchemy(app)
app.config['SECRET_KEY'], report_errors=False)
from views import *
if __name__ == '__main__':
port = int(os.environ.get('PORT', 5000))
app.run(host='0.0.0.0', port=port)
_config.py _config.py
import os
#All the app's keys
Procfile Procfile
#this works fine
web: python project/run.py
#this doesn't work
web: gunicorn project.app:app
python project/app.py runs the app fine so why does gunicorn project.app:app throw off a module ImportError? python project / app.py可以很好地运行应用程序,那么为什么gunicorn project.app:app抛出模块ImportError?
Your import for url_for needs to come before app = Flask(__name__)
您对url_for的导入需要在
app = Flask(__name__)
Your app is working on flask's server because url_for is imported prior to the 您的应用正在Flask的服务器上运行,因为url_for在导入之前
if __name__ == '__main__':
app.run(host='0.0.0.0', port=port)
statement. 声明。 Gunicorn is getting the application before you have imported url_for.
在导入url_for之前,Gunicorn正在获取应用程序。
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