## Install `WebSockets`

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and install `websockets`:

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets client

### In production

🚥 👆 💚 🤾 ⏮️ 🥙 🤝 &amp; 👀 ❔ 👫 👷, ✅ <a href="https://jwt.io/" class="external-link" target="_blank">https://jwt.io</a>.

## ❎ `python-jose`

👥 💪 ❎ `python-jose` 🏗 &amp; ✔ 🥙 🤝 🐍:

<div class="termy">

```console
$ pip install "python-jose[cryptography]"

---> 100%
```

</div>

<a href="https://github.com/mpdavis/python-jose" class="external-link" target="_blank">🐍-🇩🇬</a> 🚚 🔐 👩‍💻 ➕.

```

### 关于 `__name__ == "__main__"`

`__name__ == "__main__"` 的主要目的是使用以下代码调用文件时执行一些代码：

<div class="termy">

```console
$ python myapp.py
```

</div>

而当其它文件导入它时并不会被调用，像这样：

```Python
from myapp import app
```

#### 更多细节

假设你的文件命名为 `myapp.py`。

如果你这样运行：

<div class="termy">

```console
$ python myapp.py
```

</div>

Para rodar qualquer um dos exemplos, copie o codigo para um arquivo `main.py`, e inicie o `uvivorn` com:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

## Run the code

All the code blocks can be copied and used directly (they are actually tested Python files).

To run any of the examples, copy the code to a file `main.py`, and start `fastapi dev` with:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

//// tab | 💾, 🇸🇻, 🚪 🎉

<div class="termy">

```console
// You could create an env var MY_NAME with
$ export MY_NAME="Wade Wilson"

// Then you could use it with other programs, like
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | 🚪 📋

<div class="termy">

```console
// Create an env var MY_NAME
$ $Env:MY_NAME = "Wade Wilson"

## `WebSockets` installieren

Zuerst müssen Sie `WebSockets` installieren:

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets-Client

### In Produktion

Самый простой FastAPI файл может выглядеть так:

```Python
{!../../docs_src/first_steps/tutorial001.py!}
```

Скопируйте в файл `main.py`.

Запустите сервер в режиме реального времени:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

그러므로 필요할 때에 다시 돌아와서 원하는 것을 정확히 찾을 수 있습니다.

## 코드 실행하기

모든 코드 블록은 복사하여 바로 사용할 수 있습니다(실제로 테스트된 파이썬 파일입니다).

예제를 실행하려면 코드를 `main.py` 파일에 복사하고 다음을 사용하여 `uvicorn`을 시작합니다:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

⚫️ 🏗 👷 🔮 🔗.

👆 💪 👟 🔙 & 👀 ⚫️❔ ⚫️❔ 👆 💪.

## 🏃 📟

🌐 📟 🍫 💪 📁 & ⚙️ 🔗 (👫 🤙 💯 🐍 📁).

🏃 🙆 🖼, 📁 📟 📁 `main.py`, & ▶️ `uvicorn` ⏮️:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)