我正在尝试更新我的SQLAlchemy模型中的布尔属性，并且我希望确保MyPy也满意这段代码。但是，当我尝试更新属性时，MyPy会给我一个错误。这是错误消息：
```python
dashing/db/dao/workspace_dao.py:69: error: 赋值中的类型不兼容
(表达式类型为 "bool"，变量类型为 "Column[bool]")  [赋值]
            workspace.is_archived = new_value
                                    ^~~~~~~~~
在 1 个文件中找到 1 个错误（检查了 57 个源文件）

    async def archive_workspace(
        self,
        workspace_id: UUID,
        new_value: bool,
    ) -> Optional[WorkspaceModel]:
        workspace = await self.session.get(WorkspaceModel, workspace_id)
        if workspace is None:
            return None
        workspace.is_archived = new_value  # ← MyPy不喜欢这个赋值
        await self.session.commit()
        return workspace

class WorkspaceModel(Base):
    __tablename__ = "workspace"
    ...
    is_archived = Column(Boolean, unique=False, default=False)

Please note that the translation may not be exact due to differences in code formatting between English and Chinese, but it conveys the same information.
<details>
<summary>英文:</summary>
I am trying to update a boolean property in my SQLAlchemy model and I want to make sure MyPy is satisfied with the code as well. However, MyPy is giving me an error when I try to update the property. Here&#39;s the error message:

This is the function I am using to update the property:
```python
    async def archive_workspace(
        self,
        workspace_id: UUID,
        new_value: bool,
    ) -> Optional[WorkspaceModel]:
        workspace = await self.session.get(WorkspaceModel, workspace_id)
        if workspace is None:
            return None
        workspace.is_archived = new_value  # ← MyPy does not like this assignment
        await self.session.commit()
        return workspace

class WorkspaceModel(Base):
    __tablename__ = "workspace"
    ...
    is_archived = Column(Boolean, unique=False, default=False)

from sqlalchemy.orm import Mapped, mapped_column
class WorkspaceModel(Base):
    __tablename__ = "workspace"
    ...
    is_archived: Mapped[bool] = mapped_column(unique=False, default=False)