print(f"Hello {name} from Python")
```

/// tip | Astuce

Le deuxième argument de [`os.getenv()`](https://docs.python.org/3.8/library/os.html#os.getenv) est la valeur par défaut à retourner.

S'il n'est pas fourni, c'est `None` par défaut ; ici, nous fournissons `"World"` comme valeur par défaut à utiliser.

///

Vous pouvez ensuite exécuter ce programme Python :

//// tab | Linux, macOS, Windows Bash

<div class="termy">

///

/// info | 정보

`responses` 파라미터에서 다른 미디어 타입을 명시적으로 지정하지 않는 한, FastAPI는 응답이 주요 응답 클래스와 동일한 미디어 타입(기본값 `application/json`)을 가진다고 가정합니다.

하지만 커스텀 응답 클래스를 지정하면서 미디어 타입을 `None`으로 설정했다면, FastAPI는 연결된 모델이 있는 모든 추가 응답에 대해 `application/json`을 사용합니다.

///

## 정보 결합하기 { #combining-information }

`response_model`, `status_code`, `responses` 파라미터를 포함해 여러 위치의 응답 정보를 결합할 수도 있습니다.

/// note | 注意

请注意，你必须直接使用 `FileResponse` 返回图片。

///

/// info | 信息

除非你在 `responses` 参数中明确指定不同的媒体类型，否则 FastAPI 会假设响应与主响应类具有相同的媒体类型（默认是 `application/json`）。

但是如果你指定了一个媒体类型为 `None` 的自定义响应类，FastAPI 会对任何具有关联模型的附加响应使用 `application/json`。

///

## 组合信息 { #combining-information }

你也可以把来自多个位置的响应信息组合在一起，包括 `response_model`、`status_code` 和 `responses` 参数。

這不是 **FastAPI** 的限制，而是 HTTP 協定本身的規範。

///

## 可選的檔案上傳 { #optional-file-upload }

可透過一般型別註解並將預設值設為 `None` 使檔案成為可選：

{* ../../docs_src/request_files/tutorial001_02_an_py310.py hl[9,17] *}

## `UploadFile` 搭配額外中繼資料 { #uploadfile-with-additional-metadata }

你也可以在 `UploadFile` 上搭配 `File()`，例如用來設定額外的中繼資料：

| Testing | JUnit 4/5, UTFlute, REST Assured |

## Development Commands

### Setup
```bash
mvn antrun:run          # Download OpenSearch plugins (required before first build)
mvn dbflute:download    # One-time setup for DBFlute
mvn dbflute:freegen     # Generate DBFlute source code
mvn license:format      # Add license headers
```

### Build
```bash
mvn package             # Standard build

                includeModule('gradle', 'gradle')
            }
        }
    }
}

// We support multiple accepted public api changes JSON files, but "accepted-public-api-changes.json"
// is the "main" one that is also shown in HTML report
def apiChangesJsonDirectory = layout.projectDirectory.dir("src/changes/accepted-changes")

def compatibilityBaselineVersion = gradleModule.identity.releasedVersions.get().mostRecentRelease.version

            dstIndex += 4;
        } else {
            SMBUtil.writeInt2(0, dst, dstIndex);
            SMBUtil.writeInt2(0, dst, dstIndex + 2);
            dstIndex += 4;
        }

        // one byte in buffer must be zero
        dst[dstIndex] = 0;
        dstIndex += 1;

        // Write SMB2_RDMA_TRANSFORM if using RDMA channel

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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *

## ## Licensed to the Apache Software Foundation (ASF) under one ## or more contributor license agreements. See the NOTICE file ## distributed with this work for additional information ## regarding copyright ownership. The ASF licenses this file ## to you under the Apache License, Version 2.0 (the ## "License"); you may not use this file except in compliance ## with the License. You may obtain a copy of the License at ## ## http://www.apache.org/licenses/LICENSE-2.0 ## ## Unless required by applicable...