from flask import Flask

app = Flask(__name__)

@app.route('/')
def home():
    """Handle the root endpoint, returns 'Todo List' as a string."""
    return 'Todo List'

@app.errorhandler(404)
def not_found(e):
    """Handle 404 Not Found errors with a custom message."""
    return 'Page not found', 404

@app.errorhandler(500)
def server_error(e):
    """Handle 500 Internal Server Error with a custom message."""
    return 'Internal server error', 500

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