from sqlalchemy import create_engine from sqlalchemy.ext.declarative import declarative_base from sqlalchemy.orm import Session, sessionmaker engine = create_engine("sqlite:///database.db") SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine) Base = declarative_base() class SessionManager: def __enter__(self) -> Session: self.session = SessionLocal() return self.session def __exit__(self, *exc_data) -> None: self.session.close()