powerdns-admin/app/__init__.py

from werkzeug.contrib.fixers import ProxyFix
from flask import Flask
from flask.ext.login import LoginManager
from flask.ext.sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config.from_object('config')
app.wsgi_app = ProxyFix(app.wsgi_app)

login_manager = LoginManager()
login_manager.init_app(app)
db = SQLAlchemy(app)

from app import views, models