O manipulador de exceções receberá um `Request` e a exceção.

{* ../../docs_src/handling_errors/tutorial004_py39.py hl[2,14:19] *}

Se você for ao `/items/foo`, em vez de receber o JSON padrão com o erro:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"

El manejador de excepciones recibirá un `Request` y la excepción.

{* ../../docs_src/handling_errors/tutorial004_py39.py hl[2,14:19] *}

Ahora, si vas a `/items/foo`, en lugar de obtener el error JSON por defecto con:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"

    /**
     * Permission to write the discretionary access control list.
     */
    int WRITE_DAC = 0x00040000; // 18
    /**
     * Permission to change the owner.
     */
    int WRITE_OWNER = 0x00080000; // 19
    /**
     * Permission to synchronize.
     */
    int SYNCHRONIZE = 0x00100000; // 20
    /**
     * All generic permissions.
     */
    int GENERIC_ALL = 0x10000000; // 28
    /**

/// note | Hinweis

Wenn Sie sich die neue (gefakte) Datenbank `fake_users_db` anschauen, sehen Sie, wie das gehashte Passwort jetzt aussieht: `"$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc"`.

///

## JWT-Token verarbeiten { #handle-jwt-tokens }

Importieren Sie die installierten Module.

{* ../../docs_src/security/tutorial004_an_py310.py hl[8,49,56:57,60:61,70:76] *}

/// note | Nota

Si revisas la nueva (falsa) base de datos `fake_users_db`, verás cómo se ve ahora la contraseña con hash: `"$argon2id$v=19$m=65536,t=3,p=4$wagCPXjifgvUFBzq4hqe3w$CYaIb8sB+wtD+Vu/P4uod1+Qof8h+1g7bbDlBID48Rc"`.

///

## Manejo de tokens JWT { #handle-jwt-tokens }

Importa los módulos instalados.

	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte * 64, algorithm: SHA256, shouldFail: false},              // 19
}

func TestErasureHeal(t *testing.T) {
	for i, test := range erasureHealTests {
		if test.offDisks < test.badStaleDisks {
			// test case sanity check

	for za0001 := range z.QueuedBuckets {
		s += msgp.StringPrefixSize + len(z.QueuedBuckets[za0001])
	}
	s += 14 + msgp.ArrayHeaderSize

    /** Read control access right */
    int READ_CONTROL = 0x00020000; // 17
    /** Write DAC access right */
    int WRITE_DAC = 0x00040000; // 18
    /** Write owner access right */
    int WRITE_OWNER = 0x00080000; // 19
    /** Synchronize access right */
    int SYNCHRONIZE = 0x00100000; // 20
    /** Generic all access right */
    int GENERIC_ALL = 0x10000000; // 28
    /** Generic execute access right */

该插件用于完善 PyCharm 对 Pydantic 模型的支持，优化的功能如下：

* 自动补全
* 类型检查
* 代码重构
* 查找
* 代码审查

///

## 使用模型

在*路径操作*函数内部直接访问模型对象的属性：

{* ../../docs_src/body/tutorial002_py310.py hl[19] *}

## 请求体 + 路径参数

**FastAPI** 支持同时声明路径参数和请求体。

**FastAPI** 能识别与**路径参数**匹配的函数参数，还能识别从**请求体**中获取的类型为 Pydantic 模型的函数参数。

{* ../../docs_src/body/tutorial003_py310.py hl[15:16] *}

Обработчик исключения получит объект `Request` и исключение.

{* ../../docs_src/handling_errors/tutorial004_py39.py hl[2,14:19] *}

Теперь, если перейти к `/items/foo`, то вместо стандартной JSON-ошибки с:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"