pip install itsdangerous python from itsdangerous import URLSafeSerializer, URLSafeTimedSerializer python serializer = URLSafeSerializer('secret-key') data = {'name': 'Alice', 'age': 25} encrypted_data = serializer.dumps(data) decrypted_data = serializer.loads(encrypted_data) python serializer = URLSafeTimedSerializer('secret-key') data = {'name': 'Bob', 'age': 30} signed_data = serializer.dumps(data)