{!> ../../../docs_src/dependencies/tutorial001.py!}
    ```

비록 `Body`, `Query` 등을 사용하는 것과 같은 방식으로 여러분의 함수의 매개변수에 있는 `Depends`를 사용하지만, `Depends`는 약간 다르게 작동합니다.

`Depends`에 단일 매개변수만 전달했습니다.

이 매개변수는 함수같은 것이어야 합니다.

여러분은 직접 **호출하지 않았습니다** (끝에 괄호를 치지 않았습니다), 단지 `Depends()`에 매개변수로 넘겨 줬을 뿐입니다.

그리고 그 함수는 *경로 작동 함수*가 작동하는 것과 같은 방식으로 매개변수를 받습니다.

!!! tip "팁"

    ```

!!! info "Technical Details"
    `Security` is actually a subclass of `Depends`, and it has just one extra parameter that we'll see later.

    But by using `Security` instead of `Depends`, **FastAPI** will know that it can declare security scopes, use them internally, and document the API with OpenAPI.

        return None
    user = User(username=oauth_header)
    return user


@app.post("/login")
def login(form_data: OAuth2PasswordRequestFormStrict = Depends()):
    return form_data


@app.get("/users/me")
def read_users_me(current_user: Optional[User] = Depends(get_current_user)):
    if current_user is None:
        return {"msg": "Create an account first"}
    return current_user


client = TestClient(app)

  }

  /**
   * Returns the minimum of the two values. If the values compare as 0, the first is returned.
   *
   * <p>The recommended solution for finding the {@code minimum} of some values depends on the type
   * of your data and the number of elements you have. Read more in the Guava User Guide article on
   * <a href="https://github.com/google/guava/wiki/CollectionUtilitiesExplained#comparators">{@code

    ## Example

    ```python
    from typing import Annotated

    from fastapi import Depends, FastAPI
    from fastapi.security import OAuth2PasswordRequestForm

    app = FastAPI()


    @app.post("/login")
    def login(form_data: Annotated[OAuth2PasswordRequestForm, Depends()]):
        data = {}
        data["scopes"] = []
        for scope in form_data.scopes:

    `Security` ist tatsächlich eine Unterklasse von `Depends` und hat nur noch einen zusätzlichen Parameter, den wir später kennenlernen werden.

    Durch die Verwendung von `Security` anstelle von `Depends` weiß **FastAPI** jedoch, dass es Sicherheits-Scopes deklarieren, intern verwenden und die API mit OpenAPI dokumentieren kann.

@app.post("/login")
# Here we use string annotations to test them
def login(form_data: "OAuth2PasswordRequestFormStrict" = Depends()):
    return form_data


@app.get("/users/me")
# Here we use string annotations to test them
def read_current_user(current_user: "User" = Depends(get_current_user)):
    return current_user


client = TestClient(app)


def test_security_oauth2():

Es könnte wie folgt aufgerufen werden:

```Python
oauth2_scheme(some, parameters)
```

Es kann also mit `Depends` verwendet werden.

### Verwendung

Jetzt können Sie dieses `oauth2_scheme` als Abhängigkeit `Depends` übergeben.

=== "Python 3.9+"

    ```Python hl_lines="12"
    {!> ../../../docs_src/security/tutorial001_an_py39.py!}
    ```

Ее можно вызвать следующим образом:

```Python
oauth2_scheme(some, parameters)
```

Поэтому ее можно использовать вместе с `Depends`.

### Использование

Теперь вы можете передать ваш `oauth2_scheme` в зависимость с помощью `Depends`.

=== "Python 3.9+"

    ```Python hl_lines="12"
    {!> ../../../docs_src/security/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

			// As per "Permission" section in
			// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
			// If the object you request does not exist,
			// the error Amazon S3 returns depends on
			// whether you also have the s3:ListBucket
			// permission.
			// * If you have the s3:ListBucket permission
			//   on the bucket, Amazon S3 will return an
			//   HTTP status code 404 ("no such key")