SQLAlchemy 引擎和会话对象的类型提示

Question

我正在尝试向我的 SQLAlchemy 脚本添加类型提示：

connection_string: str = "sqlite:///:memory:"
engine = create_engine(connection_string)
session = Session(bind=engine)
reveal_type(engine)
reveal_type(session)

我已经运行了这个脚本，mypy但两种类型都作为Any. engine和session变量应该是什么类型？

Answer 1

弄清楚了：

connection_string: str = "sqlite:///:memory:"
engine = create_engine(connection_string)
session = Session(bind=engine)
print(type(engine))   # sqlalchemy.engine.base.Engine
print(type(session))  # sqlalchemy.orm.session.Session