如果可以，请尽量使用 `Annotated` 版本。

///

```Python hl_lines="15"
{!> ../../docs_src/dependencies/tutorial008d.py!}
```

////

现在客户端同样会得到 *HTTP 500 Internal Server Error* 响应，但是服务器日志会记录下我们自定义的 `InternalError`。

##  使用 `yield` 的依赖项的执行

执行顺序大致如下时序图所示。时间轴从上到下，每一列都代表交互或者代码执行的一部分。

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler

///

```Python hl_lines="15"
{!> ../../docs_src/dependencies/tutorial008d.py!}
```

////

Now the client will get the same *HTTP 500 Internal Server Error* response, but the server will have our custom `InternalError` in the logs. 😎

## Execution of dependencies with `yield`

The sequence of execution is more or less like this diagram. Time flows from top to bottom. And each column is one of the parts interacting or executing code.

		Description:    "You did not provide the number of bytes specified by the Content-Length HTTP header.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInternalError: {
		Code:           "InternalError",
		Description:    "We encountered an internal error, please try again.",
		HTTPStatusCode: http.StatusInternalServerError,
	},
	ErrInvalidAccessKeyID: {
		Code:           "InvalidAccessKeyId",

///

```Python hl_lines="15"
{!> ../../docs_src/dependencies/tutorial008d.py!}
```

////

Agora o cliente irá receber a mesma resposta *HTTP 500 Internal Server Error*, mas o servidor terá nosso `InternalError` personalizado nos logs. 😎

## Execução de dependências com `yield`

				if len(outputQueue) < cap(outputQueue) {
					continue
				}

				if !sendRecord() {
					break OuterLoop
				}
			}
		}
	}

	if err != nil {
		_ = writer.FinishWithError("InternalError", err.Error())
	}
}

// Close - closes opened S3 object.
func (s3Select *S3Select) Close() error {
	if s3Select.recordReader == nil {
		return nil
	}
	return s3Select.recordReader.Close()
}

		apiErr := errorCodes.ToAPIErr(s3Err)
		// If not set, convert or use BadRequest
		if s3Err == ErrNone {
			apiErr = toAPIError(ctx, err)
			if apiErr.Code == "InternalError" {
				// Convert generic internal errors to bad requests.
				apiErr = APIError{
					Code:           "BadRequest",
					Description:    err.Error(),
					HTTPStatusCode: http.StatusBadRequest,
				}