app.py

# -*- coding: utf-8 -*-
from flask import Flask, request

from config import DefaultConfig
from extensions import db


def create_app(_config=DefaultConfig()):
    app = Flask(__name__)
    app.config.from_object(_config)

    @app.route('/')
    def hello_world():
        return 'Hello World!'
    print app.url_map
    return app


def init_extensions(app):
    db.init_app(app)