{"url": "https://prod.example.com", "description": "Production environment"},
    ],
    root_path="/api/v1",
)


@app.get("/app")
def read_main(request: Request):

```Python
response = requests.get("http://example.com/some/url")
```

对应地，FastAPI 的 API 路径操作可能看起来是这样的：

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
    return {"message": "Hello World"}
```

可以看到 `requests.get(...)` 与 `@app.get(...)` 的相似之处。

/// check | 启发 **FastAPI**：

* 提供简单直观的 API。
* 直接、自然地使用 HTTP 方法名（操作）。
* 具备合理默认值，同时支持强大定制能力。

///

longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/longname/file.txt hello...

    "data": "aGVsbG8="
}
```

/// tip | Astuce

`aGVsbG8=` est l'encodage base64 de `hello`.

///

Pydantic décodera ensuite la chaîne base64 et vous fournira les octets originaux dans le champ `data` du modèle.

Vous recevrez une réponse comme :

```json
{
  "description": "Some data",
  "content": "hello"
}
```

## Pydantic `bytes` pour les données de sortie { #pydantic-bytes-for-output-data }

from fastapi import FastAPI, Request

app = FastAPI()


@app.get("/app")
def read_main(request: Request):

## 标题 { #headings }

//// tab | 测试

### 开发 Web 应用——教程 { #develop-a-webapp-a-tutorial }

Hello.

### 类型提示与注解 { #type-hints-and-annotations }

Hello again.

### 超类与子类 { #super-and-subclasses }

Hello again.

////

//// tab | 信息

关于标题的唯一硬性规则是：LLM 必须保持花括号内的哈希部分不变，以确保链接不会失效。

参见 `scripts/translate.py` 中通用提示的 `### Headings` 部分。

from docs_src.behind_a_proxy.tutorial004_py310 import app

client = TestClient(app)


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200
    assert response.json() == snapshot(
        {

            return Collections.emptyMap();
        }
    }

    @Test
    public void test_GzipSuccessResponse_DecompressedCorrectly() throws Exception {
        // ## Arrange ##
        String originalBody = "Hello, GZIP world!";
        byte[] gzipped = gzipCompress(originalBody);
        CurlRequest req = new OpenOverrideCurlRequest(Curl.Method.GET, "http://dummy", u -> new GzipSuccessMockHttpURLConnection(u, gzipped));

Helló
világ

client = TestClient(app, root_path="/api/v1")


def test_main():
    response = client.get("/app")
    assert response.status_code == 200
    assert response.json() == {"message": "Hello World", "root_path": "/api/v1"}


def test_openapi():
    response = client.get("/openapi.json")
    assert response.status_code == 200
    assert response.json() == snapshot(
        {