现在启动 Traefik：

<div class="termy">

```console
$ ./traefik --configFile=traefik.toml

INFO[0000] Configuration loaded from file: /home/user/awesomeapi/traefik.toml
```

</div>

然后使用 `--root-path` 选项启动你的应用：

<div class="termy">

```console
$ fastapi run main.py --forwarded-allow-ips="*" --root-path /api/v1

すでに**FastAPI Cloud**アカウントがある場合（待機リストから招待済みの場合😉）、1コマンドでアプリケーションをデプロイできます。

デプロイする前に、ログインしていることを確認してください:

<div class="termy">

```console
$ fastapi login

You are logged in to FastAPI Cloud 🚀
```

</div>

その後、アプリをデプロイします:

<div class="termy">

```console
$ fastapi deploy

Deploying to FastAPI Cloud...

✅ Deployment successful!

We need to install `PyJWT` to generate and verify the JWT tokens in Python.

Make sure you create a [virtual environment](../../virtual-environments.md), activate it, and then install `pyjwt`:

<div class="termy">

```console
$ pip install pyjwt

---> 100%
```

</div>

/// info

If you are planning to use digital signature algorithms like RSA or ECDSA, you should install the cryptography library dependency `pyjwt[crypto]`.

首先，請先建立你的[虛擬環境](../virtual-environments.md)，啟用它，然後安裝 `pydantic-settings` 套件：

<div class="termy">

```console
$ pip install pydantic-settings
---> 100%
```

</div>

當你用 `all` extras 安裝時，它也會一併包含在內：

<div class="termy">

```console
$ pip install "fastapi[all]"
---> 100%
```

</div>

### 建立 `Settings` 物件 { #create-the-settings-object }

 * under the License.
 */
package org.apache.maven.internal;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

/**
 * Helper class to format multiline messages to the console
 */
public class MultilineMessageHelper {

    private static final int DEFAULT_MAX_SIZE = 65;
    private static final char BOX_CHAR = '*';

    private static final Pattern S_FILTER = Pattern.compile("\\s+");

它也被設計成可作為未來的參考，讓你隨時回來查看所需的內容。

## 運行程式碼 { #run-the-code }

所有程式碼區塊都可以直接複製和使用（它們實際上是經過測試的 Python 檔案）。

要運行任何範例，請將程式碼複製到 `main.py` 檔案，並使用以下命令啟動 `fastapi dev`：

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertNotNull;

/**
 * Unit tests for the {@link UpgradeContext} class.
 * Tests console output formatting and Unicode icon fallback behavior.
 */
@DisplayName("UpgradeContext")
class UpgradeContextTest {

    @Test
    @DisplayName("should create context successfully")

수동으로 설치하려면, [가상 환경](../../virtual-environments.md)을 만들고 활성화한 다음, 아래로 설치하세요:

```console
$ pip install python-multipart
```

이는 **OAuth2**가 `username`과 `password`를 보내기 위해 "form data"를 사용하기 때문입니다.

///

다음으로 예제를 실행하세요:

<div class="termy">

```console
$ fastapi dev

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

///

## 多個工作處理序 { #multiple-workers }

你可以用命令列選項 `--workers` 來啟動多個 workers：

//// tab | `fastapi`

如果你使用 `fastapi` 指令：

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> run --workers 4 <u style="text-decoration-style:solid">main.py</u>

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting production server 🚀

To use forms, first install [`python-multipart`](https://github.com/Kludex/python-multipart).

Make sure you create a [virtual environment](../virtual-environments.md), activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

## Import `Form` { #import-form }

Import `Form` from `fastapi`:

{* ../../docs_src/request_forms/tutorial001_an_py310.py hl[3] *}