<img src="/img/tutorial/body/image01.png">

&amp; 🔜 ⚙️ 🛠️ 🩺 🔘 🔠 *➡ 🛠️* 👈 💪 👫:

<img src="/img/tutorial/body/image02.png">

## 👨‍🎨 🐕‍🦺

👆 👨‍🎨, 🔘 👆 🔢 👆 🔜 🤚 🆎 🔑 &amp; 🛠️ 🌐 (👉 🚫🔜 🔨 🚥 👆 📨 `dict` ↩️ Pydantic 🏷):

<img src="/img/tutorial/body/image03.png">

👆 🤚 ❌ ✅ ❌ 🆎 🛠️:

<img src="/img/tutorial/body/image04.png">

👉 🚫 🤞, 🎂 🛠️ 🏗 🤭 👈 🔧.

<img src="/img/tutorial/websockets/image01.png">

You can type messages in the input box, and send them:

<img src="/img/tutorial/websockets/image02.png">

And your **FastAPI** application with WebSockets will respond back:

<img src="/img/tutorial/websockets/image03.png">

You can send (and receive) many messages:

<img src="/img/tutorial/websockets/image04.png">

///

## Bodies of pure lists

If the top level value of the JSON body you expect is a JSON `array` (a Python `list`), you can declare the type in the parameter of the function, the same as in Pydantic models:

```Python
images: List[Image]
```

or in Python 3.9 and above:

```Python
images: list[Image]
```

as in:

image01.png...

image03.png...

image02.png...

image02.png...

image01.png...

image02.png...

image01.png...