“Internal Server Error” with Hello World Python App

问题

My files are as follows:

application.wsgi (NOTE: updated as recommended from my previous question here)

import os
import sys


sys.path.append('/srv/www/mysite.com/application')

os.environ['PYTHON_EGG_CACHE'] = '/srv/www/mysite.com/.python-egg'

import flaskr.helloworld
application = flaskr.helloworld.app

helloworld.py

from flask import Flask
app = Flask(__name__)

@app.route('/')
def __init__(self):
    print 'Hello World!'

if __name__ == '__main__':
    app.run()

For what ever reason I get the following error when attempting to load. Nothing is added to my error.log, it just displays this in the browser: "Internal Server Error"

回答1:

Change print 'Hello World!' to return 'Hello World!'

来源：https://stackoverflow.com/questions/8713794/internal-server-error-with-hello-world-python-app