python
from flask import Flask
from flask_login import LoginManager, login_required
app = Flask(__name__)
login_manager = LoginManager(app)
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
@app.route('/profile')
@login_required
def profile():
return 'Welcome to your profile page!'
if __name__ == '__main__':
app.run()
