import os from dotenv import load_dotenv load_dotenv()  # Load environment variables from .env file class Settings:     SECRET_KEY: str = os.getenv("SECRET_KEY", "default_secret")     SHODAN_API_KEY: str = os.getenv("SHODAN_API_KEY", "your_shodan_api_key")     DATABASE_URL: str = os.getenv("DATABASE_URL", "sqlite:///./test.db")  # Example for SQLite settings = Settings()