from flask import Flask

app = Flask(__name__)

@app.route('/')
def todo_list():
    """Route to return the Todo List page."""
    return 'Todo List'

@app.errorhandler(404)
def page_not_found(e):
    """Handle 404 errors."""
    return 'Page not found', 404

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