I'm currently working through the book Flask Web Development, Developing Web Applications with Python and am currently having some issues determining where I should place the WSGI interface so that I can deploy it to an Azure Web Service. For reference I'm currently at Chapter 7 and a copy of this code that I'm currently working through can be found at https://github.com/miguelgrinberg/flasky/tree/7a
To try and work out where the problem is I've created a test Azure Cloud Service with Flask in Visual Studio which runs perfectly in the Azure Emulator. The following code is a copy of the app.py file.
"""
This script runs the application using a development server.
It contains the definition of routes and views for the application.
"""
from flask import Flask
app = Flask(__name__)
# Make the WSGI interface available at the top level so wfastcgi can get it.
wsgi_app = app.wsgi_app
@app.route('/')
def hello():
"""Renders a sample page."""
return "Hello World!"
if __name__ == '__main__':
import os
HOST = os.environ.get('SERVER_HOST', 'localhost')
try:
PORT = int(os.environ.get('SERVER_PORT', '5555'))
except ValueError:
PORT = 5555
app.run(HOST, PORT)
The key line here is the declaration of the wsgi_app attribute which is picked up by wfastcgi. However when I try to insert this into the following code (manage.py for reference) and change it slightly to run with the test project settings
#!/usr/bin/env python
import os
from app import create_app, db
from app.models import User, Role
from flask.ext.script import Manager, Shell
from flask.ext.migrate import Migrate, MigrateCommand
app = create_app(os.getenv('FLASK_CONFIG') or 'default')
manager = Manager(app)
migrate = Migrate(app, db)
def make_shell_context():
return dict(app=app, db=db, User=User, Role=Role)
manager.add_command("shell", Shell(make_context=make_shell_context))
manager.add_command('db', MigrateCommand)
@manager.command
def test():
"""Run the unit tests."""
import unittest
tests = unittest.TestLoader().discover('tests')
unittest.TextTestRunner(verbosity=2).run(tests)
# Make the WSGI interface available at the top level so wfastcgi can get it.
wsgi_app = app.wsgi_app
if __name__ == '__main__':
HOST = os.environ.get('SERVER_HOST', 'localhost')
try:
PORT = int(os.environ.get('SERVER_PORT', '5555'))
except ValueError:
PORT = 5555
app.run(HOST, PORT)
I receive the following error when I try to run it inside of an Azure Emulator.
AttributeError: 'module' object has no attribute 'wsgi_app'
I suspect that I'm not putting the wsgi_app variable in the correct location but I can't figure out exactly where I should put it.
Any help would be greatly appreciative.
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