但是通过将类型声明为Session，编辑器现在可以知道可用的方法（.add()、.query()、.commit()等）并且可以提供更好的支持（比如完成）。类型声明不影响实际对象。

### 创建您的**FastAPI** *路径操作*

现在，到了最后，编写标准的**FastAPI** *路径操作*代码。

=== "Python 3.9+"

    ```Python hl_lines="21-26  29-32  35-40  43-47  50-53"
    {!> ../../../docs_src/sql_databases/sql_app_py39/main.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="23-28  31-34  37-42  45-49  52-55"

=== "🐍 3️⃣.6️⃣ & 🔛"

    ```Python hl_lines="23-28  31-34  37-42  45-49  52-55"
    {!> ../../../docs_src/sql_databases/sql_app/main.py!}
    ```

=== "🐍 3️⃣.9️⃣ & 🔛"

    ```Python hl_lines="21-26  29-32  35-40  43-47  50-53"
    {!> ../../../docs_src/sql_databases/sql_app_py39/main.py!}
    ```

👥 🏗 💽 🎉 ⏭ 🔠 📨 🔗 ⏮️ `yield`, & ⤴️ 📪 ⚫️ ⏮️.

& ⤴️ 👥 💪 ✍ 🚚 🔗 *➡ 🛠️ 🔢*, 🤚 👈 🎉 🔗.

* 🔧 Add FastAPI user survey banner. PR [#2623](https://github.com/tiangolo/fastapi/pull/2623) by [@tiangolo](https://github.com/tiangolo).
* 🔧 Add new Bronze Sponsor(s) 🥉🎉. PR [#2622](https://github.com/tiangolo/fastapi/pull/2622) by [@tiangolo](https://github.com/tiangolo).
* 📝 Update social links: add Discord, fix GitHub. PR [#2621](https://github.com/tiangolo/fastapi/pull/2621) by [@tiangolo](https://github.com/tiangolo).

### Create your **FastAPI** *path operations*

Now, finally, here's the standard **FastAPI** *path operations* code.

=== "Python 3.9+"

    ```Python hl_lines="21-26  29-32  35-40  43-47  50-53"
    {!> ../../../docs_src/sql_databases/sql_app_py39/main.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="23-28  31-34  37-42  45-49  52-55"