app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: str = Depends(get_username)):
    if item_id == "portal-gun":
        raise InternalError(

app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):
    if item_id == "portal-gun":
        raise InternalError(

from fastapi import Depends, FastAPI, HTTPException

app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("We don't swallow the internal error here, we raise again 😎")
        raise


@app.get("/items/{item_id}")
def get_item(item_id: str, username: str = Depends(get_username)):
    if item_id == "portal-gun":

from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException

app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("We don't swallow the internal error here, we raise again 😎")
        raise


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):

        String message = "SSO failed due to VM error";
        InternalError error = new InternalError("JVM internal error during SSO");
        SsoProcessException exception = new SsoProcessException(message, error);

        assertEquals(message, exception.getMessage());
        assertTrue(exception.getCause() instanceof InternalError);
        assertTrue(exception.getCause() instanceof VirtualMachineError);

        String message = "VM error during crawling";
        InternalError error = new InternalError("JVM internal error");

        DataStoreCrawlingException exception = new DataStoreCrawlingException(url, message, error);

        assertEquals(url, exception.getUrl());
        assertTrue(exception.getCause() instanceof InternalError);
        assertTrue(exception.getCause() instanceof VirtualMachineError);

你可以使用 `raise` 重新抛出同一个异常：

{* ../../docs_src/dependencies/tutorial008d_an_py310.py hl[17] *}

现在客户端仍会得到同样的 *HTTP 500 Internal Server Error* 响应，但服务器日志中会有我们自定义的 `InternalError`。😎

## 使用 `yield` 的依赖项的执行 { #execution-of-dependencies-with-yield }

执行顺序大致如下图所示。时间轴从上到下，每一列都代表交互或执行代码的一部分。

```mermaid
sequenceDiagram

participant client as Client

你可以使用 `raise` 重新拋出同一個例外：

{* ../../docs_src/dependencies/tutorial008d_an_py310.py hl[17] *}

現在客戶端仍會獲得同樣的 *HTTP 500 Internal Server Error* 回應，但伺服器的日誌中會有我們自訂的 `InternalError`。😎

## 含 `yield` 的相依執行順序 { #execution-of-dependencies-with-yield }

執行順序大致如下圖。時間從上往下流動，每一欄代表一個互動或執行程式碼的部分。

```mermaid
sequenceDiagram

participant client as Client

{* ../../docs_src/dependencies/tutorial008d_an_py310.py hl[17] *}

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` { #execution-of-dependencies-with-yield }

`raise`를 사용하여 동일한 예외를 다시 발생시킬 수 있습니다:

{* ../../docs_src/dependencies/tutorial008d_an_py310.py hl[17] *}

이제 클라이언트는 동일한 *HTTP 500 Internal Server Error* 응답을 받게 되지만, 서버 로그에는 사용자 정의 `InternalError`가 기록됩니다. 😎

## `yield`를 사용하는 의존성의 실행 순서 { #execution-of-dependencies-with-yield }

실행 순서는 아래 다이어그램과 거의 비슷합니다. 시간은 위에서 아래로 흐릅니다. 그리고 각 열은 상호 작용하거나 코드를 실행하는 부분 중 하나입니다.

```mermaid
sequenceDiagram