Python 2.7.3 Flask ImportError：未命名模块

Question

I have a Flask application with this error:

ImportError: No module named annotaria, referer: http://ltw1413.web.cs.unibo.it/

So, my root in web server is:

/home/web/ltw1413/html

Inside html folder I have:

• One folder named "annotaria
• One file .wsgi named "wsgi.wsgi"

My file .wsgi is:

import sys
sys.path.insert(0, '/home/web/ltw1413/html')
from annotaria import app as application

Inside my folder "annotaria" I have:

• "Static" folder : inside stylesheet and js
• "Templates" folder : inside html
• "run.py" : file python where I have my application

run.py is this:

from pydoc import html
from annotaria import app
from flask import Flask, render_template, redirect, request
import json
import urllib2
import urlparse
import re
import string
import os
from SPARQLWrapper import SPARQLWrapper, JSON
from rdflib import Graph, BNode, Literal, Namespace
from time import strftime
import urllib2
import BeautifulSoup

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')


@app.route('/index.html')
def reloader():
    return render_template('index.html')


# other app.route()...

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

How can I find a solution? Where is my error?

Answer 1

Lots of errors here... annotaria is not found on path (that is why it says... well.. exactly that).

In your code you also redefine app : you import it from annotaria and then redefine it in app = Flask(.. .

Answer 2

Others mentioned individual errors, but it would be helpful to understand the big picture. First of all, let's assume the following structure:

/home/web/ltw1413/html
- wsgi.wsgi
- annotaria/
  - __init.py__
  - run.py
  - static/
  - templates

Like Klaus mentioned, you need __init__.py to tell Python that annotaria is a valid package. But then your wsgi.wsgi file needs to import the app from the run module:

from annotaria.run import app as application

You also need to remove this unnecessary import from run.py , since you instantiate a new application:

from annotaria import app

Because there is no application to import, you instantiate a new Flask application.

Finally, make sure that the app runs manually before you start deploying it.