title: Get list of all routes defined in the Flask app
body: <p>I have a complex Flask-based web app.  There are lots of separate files with view functions.  Their URLs are defined with the <code>@app.route('/...')</code> decorator.  Is there a way to get a list of all the routes that have been declared throughout my app?  Perhaps there is some method I can call on the <code>app</code> object?</p>