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

Cela est dû au fait que **OAuth2** utilise des « form data » pour envoyer le `username` et le `password`.

///

Exécutez l'exemple avec :

<div class="termy">

```console
$ fastapi dev

     * command to command line. Result of given command will be something like this:
     * <pre>
     * Display parameters as parsed by Maven (in canonical form) and comparison result:
     * 1. 1.2.7 == 1.2.7
     *    1.2.7 &gt; 1.2-SNAPSHOT
     * 2. 1.2-SNAPSHOT == 1.2-snapshot
     * </pre>
     *

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

Bunun nedeni, **OAuth2**’nin `username` ve `password` göndermek için "form data" kullanmasıdır.

///

Örneği şu şekilde çalıştırın:

<div class="termy">

```console
$ fastapi dev

{* ../../docs_src/path_operation_advanced_configuration/tutorial003_py310.py hl[6] *}

## 從 docstring 提供進階描述 { #advanced-description-from-docstring }

你可以限制 OpenAPI 從*路徑操作函式*的 docstring 中使用的內容行數。

加上一個 `\f`（跳頁字元，form feed）會讓 FastAPI 在此處截斷用於 OpenAPI 的輸出。

這個字元不會出現在文件中，但其他工具（例如 Sphinx）仍可使用其後的內容。

{* ../../docs_src/path_operation_advanced_configuration/tutorial004_py310.py hl[17:27] *}

## 額外回應 { #additional-responses }

 * Client and server exchange these certificates during the handshake phase of a TLS connection.
 *
 * ### Server Authentication
 *
 * This is the most common form of TLS authentication: clients verify that servers are trusted and
 * that they own the hostnames that they represent. Server authentication is required.
 *
 * To perform server authentication:
 *

## Description avancée depuis la docstring { #advanced-description-from-docstring }

Vous pouvez limiter les lignes utilisées de la docstring d’une fonction de chemin d’accès pour OpenAPI.

L’ajout d’un `\f` (un caractère « form feed » échappé) amène **FastAPI** à tronquer la sortie utilisée pour OpenAPI à cet endroit.

Cela n’apparaîtra pas dans la documentation, mais d’autres outils (comme Sphinx) pourront utiliser le reste.

func (e MethodNotAllowed) Error() string {
	return "Method not allowed: " + e.Bucket + "/" + e.Object
}

// ObjectLocked object is currently WORM protected.
type ObjectLocked GenericError

func (e ObjectLocked) Error() string {
	return "Object is WORM protected and cannot be overwritten: " + e.Bucket + "/" + e.Object + "(" + e.VersionID + ")"
}

// ObjectAlreadyExists object already exists.

@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):
    return data
```

Read the new docs: [Form Models - Forbid Extra Form Fields](https://fastapi.tiangolo.com/tutorial/request-form-models/#forbid-extra-form-fields).

### Features

            }
            // Add brackets for IPv6
            return "[" + address + "]";
        }
        return address;
    }

    /**
     * Compresses an IPv6 address string to its canonical compressed form.
     * For example, "0:0:0:0:0:0:0:1" becomes "::1"
     *
     * @param ipv6Address the IPv6 address string to compress
     * @return the compressed IPv6 address string
     */

        }
        return new String(c);
    }

    /**
     * This is the same as {@link jcifs.smb1.util.Hexdump#toHexString(int val, int
     * size)} but provides a more practical form when trying to avoid {@link
     * java.lang.String} concatenation and {@link java.lang.StringBuffer}.
     *
     * @param val the integer value to convert to hexadecimal characters