```

Then, declare your *path operation functions* with `async def` like:

```Python hl_lines="2"
@app.get('/')
async def read_results():
    results = await some_library()
    return results
```

!!! note
    You can only use `await` inside of functions created with `async def`.

---

> Use the same username and password created in the previous steps.

```
[foobar]
region = us-east-1
aws_access_key_id = foobar
aws_secret_access_key = foo12345
```

> NOTE: In the following commands `--role-arn` and `--role-session-name` are not meaningful for MinIO and can be set to any value satisfying the command line requirements.

```

    ```

=== "🐍 3️⃣.1️⃣0️⃣ & 🔛"

    ```Python hl_lines="6  47  54-55  58-59  68-74"
    {!> ../../../docs_src/security/tutorial004_py310.py!}
    ```

!!! note
    🚥 👆 ✅ 🆕 (❌) 💽 `fake_users_db`, 👆 🔜 👀 ❔ #️⃣ 🔐 👀 💖 🔜: `"$2b$12$EixZaYVK1fsbw1ZfbX3OXePaWxn96p36WQoeG6Lruj3vjPGga31lW"`.

## 🍵 🥙 🤝

🗄 🕹 ❎.

✍ 🎲 ㊙ 🔑 👈 🔜 ⚙️ 🛑 🥙 🤝.

* Users may have external CA setups that pre-configure certificates.
* The CaClient can use JWT token for the initial setup, then switch to mTLS certificates.

Note that `OUTPUT_CERTS` can be used to refresh certificates using previously provisioned certificates, by configuring
the ca client to use certificates written to the same directory we have configured them to be written to.

 *  Fix: Prefer TLSv1.2 where it is available. On certain older platforms it is necessary to opt-in
    to TLSv1.2.
 *  New: `Request.tag()` permits multiple tags. Use a `Class<?>` as a key to identify tags. Note
    that `tag()` now returns null if the request has no tag. Previously this would return the
    request itself.
 *  New: `Headers.Builder.addAll(Headers)`.
 *  New: `ResponseBody.create(MediaType, ByteString)`.

& 🚥 👈 `Response` ✔️ 🎻 📻 🆎 (`application/json`), 💖 💼 ⏮️ `JSONResponse` & `UJSONResponse`, 💽 👆 📨 🔜 🔁 🗜 (& ⛽) ⏮️ 🙆 Pydantic `response_model` 👈 👆 📣 *➡ 🛠️ 👨‍🎨*.

!!! note
    🚥 👆 ⚙️ 📨 🎓 ⏮️ 🙅‍♂ 📻 🆎, FastAPI 🔜 ⌛ 👆 📨 ✔️ 🙅‍♂ 🎚, ⚫️ 🔜 🚫 📄 📨 📁 🚮 🏗 🗄 🩺.

## ⚙️ `ORJSONResponse`

## Vote for FastAPI

* <a href="https://www.slant.co/options/34241/~fastapi-review" class="external-link" target="_blank">Vote for **FastAPI** in Slant</a>.
* <a href="https://alternativeto.net/software/fastapi/" class="external-link" target="_blank">Vote for **FastAPI** in AlternativeTo</a>.

    }

    fun build(): CacheControl = commonBuild()
  }

  companion object {
    /**
     * Cache control request directives that require network validation of responses. Note that such
     * requests may be assisted by the cache via conditional GET requests.
     */
    @JvmField
    val FORCE_NETWORK = commonForceNetwork()

    /**

=== "Python 3.8+ nicht annotiert"

    !!! tip "Tipp"
        Bevorzugen Sie die `Annotated`-Version, falls möglich.

    ```Python hl_lines="9"
    {!> ../../../docs_src/header_params/tutorial001.py!}
    ```

!!! note "Technische Details"
    `Header` ist eine Schwesterklasse von `Path`, `Query` und `Cookie`. Sie erbt von derselben gemeinsamen `Param`-Elternklasse.

{!../../../docs_src/websockets/tutorial001.py!}
```

## ✍ `websocket`

👆 **FastAPI** 🈸, ✍ `websocket`:

```Python hl_lines="1  46-47"
{!../../../docs_src/websockets/tutorial001.py!}
```

!!! note "📡 ℹ"
    👆 💪 ⚙️ `from starlette.websockets import WebSocket`.

    **FastAPI** 🚚 🎏 `WebSocket` 🔗 🏪 👆, 👩‍💻. ✋️ ⚫️ 👟 🔗 ⚪️➡️ 💃.

## ⌛ 📧 & 📨 📧

👆 *️⃣ 🛣 👆 💪 `await` 📧 & 📨 📧.