*
 * @param <B> The concrete type of this builder (the 'self-type'). All the Builder methods of this
 *     class (such as {@link #named}) return this type, so that Builder methods of more derived
 *     classes can be chained onto them without casting.
 * @param <G> The type of the generator to be passed to testers in the generated test suite. An

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

///

## 导入 `Form` { #import-form }

从 `fastapi` 导入 `Form`：

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

## 定义 `Form` 参数 { #define-form-parameters }

创建表单参数的方式与 `Body` 或 `Query` 相同：

{* ../../docs_src/request_forms/tutorial001_an_py310.py hl[9] *}

例如，在 OAuth2 规范的一种使用方式（称为“密码流”）中，要求将 `username` 和 `password` 作为表单字段发送。

```

///

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

Importieren Sie `Form` von `fastapi`:

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

## `Form`-Parameter definieren { #define-form-parameters }

Erstellen Sie Formular-Parameter, so wie Sie es auch mit `Body` und `Query` machen würden:

{* ../../docs_src/request_forms/tutorial001_an_py310.py hl[9] *}

## Documentation Response description - OpenAPI { #documentation-response-description-openapi }

To define the description of the response, shown in the docs UI, read the docs for [Tutorial - Path Operation Configurations - Response description](../tutorial/path-operation-configuration.md#response-description).

      // "\foo" ("\" - current drive for process on Windows)
      // "C:foo" ("C:" - working dir of drive C on Windows)
      return parent;
    }

    // Paths that don't have a parent:
    if (path.getNameCount() == 0) {
      // "/", "C:\", "\" (no parent)
      // "" (undefined, though typically parent of working dir)
      // "C:" (parent of working dir of drive C on Windows)
      //

H3H V25 #define XH3 V26 #define XM3 V27 #define IN3 V28 #define H4L V29 #define H4 V30 #define H4H V31 #define IN0 IN #define H21L HL #define H21H HH #define LOPERM H2L #define HIPERM H2H #define VXL VS32 #define VIN VS35 #define VXC2 VS40 #define VH VS41 #define VHH VS42 #define VHL VS43 #define VIN1 VS48 #define VH2 VS49 #define VH2H VS50 #define VH2L VS51 #define VIN2 VS54 #define VH3L VS55 #define VH3 VS56 #define VH3H VS57 #define VIN3 VS60 #define VH4L VS61 #define VH4 VS62 #define VH4H VS63...

 * high contention, expected throughput of this class is significantly higher, at the expense of
 * higher space consumption.
 *
 * <p>This class extends {@link Number}, but does not define methods such as {@code
 * equals}, {@code hashCode} and {@code compareTo} because instances are expected to be mutated, and
 * so are not useful as collection keys.
 *

## Exemple { #example }

Pour un exemple simple, considérons une structure de fichiers similaire à celle décrite dans [Applications plus grandes](../tutorial/bigger-applications.md) et [Tests](../tutorial/testing.md) :

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

http://localhost:8000
```

/// tip

Note that both have the same host.

///

Then using the frontend you can make the AI agent do things on your behalf.

As it's running **locally**, and not in the open internet, you decide to **not have any authentication** set up, just trusting the access to the local network.

Then one of your users could install it and run it locally.

Then they could open a malicious website, e.g. something like

```

```

/// tip | Dica

Observe que ambos têm o mesmo host.

///

Usando o frontend, você pode fazer o agente de IA executar ações em seu nome.

Como está em execução localmente e não na Internet aberta, você decide não configurar autenticação, confiando apenas no acesso à rede local.

Então um de seus usuários poderia instalá-lo e executá-lo localmente.

Em seguida, poderia abrir um site malicioso, por exemplo:

```