### Understanding JWT Claims

> NOTE: JWT claims are only meant for WebIdentity and ClientGrants.
> AssumeRole or LDAP users can skip the entire portion and directly visit one of the links below.
>

Por exemplo para declarar um valor de metadado `title` para o parâmetro de rota `item_id` você pode digitar:

{* ../../docs_src/path_params_numeric_validations/tutorial001_py310.py hl[8] *}

/// note | Nota

Um parâmetro de rota é sempre obrigatório, como se fizesse parte da rota.

Então, você deve declará-lo com `...` para marcá-lo como obrigatório.

{* ../../docs_src/templates/tutorial001.py hl[4,11,15:18] *}

/// note | Hinweis

Vor FastAPI 0.108.0 und Starlette 0.29.0 war `name` der erste Parameter.

Außerdem wurde in früheren Versionen das `request`-Objekt als Teil der Schlüssel-Wert-Paare im Kontext für Jinja2 übergeben.

///

{* ../../docs_src/templates/tutorial001.py hl[4,11,15:18] *}

/// note

Antes do FastAPI 0.108.0, Starlette 0.29.0, `name` era o primeiro parâmetro.

Além disso, em versões anteriores, o objeto `request` era passado como parte dos pares chave-valor no "context" dict para o Jinja2.

///

		})
	}
}

// SetHistogram - sets values for the given MetricName using the provided
// histogram.
//
// `filterByLabels` is a map of label names to list of allowed label values to
// filter by. Note that this filtering happens before any renaming of labels.
//
// `renameLabels` is a map of label names to rename. The keys are the original
// label names and the values are the new label names.
//

🔰, 👆 💪 💚 ❎ ⚫️ ⏮️ 🌐 📦 🔗 & ⚒:

<div class="termy">

```console
$ pip install "fastapi[all]"

---> 100%
```

</div>

...👈 🔌 `uvicorn`, 👈 👆 💪 ⚙️ 💽 👈 🏃 👆 📟.

/// note

👆 💪 ❎ ⚫️ 🍕 🍕.

👉 ⚫️❔ 👆 🔜 🎲 🕐 👆 💚 🛠️ 👆 🈸 🏭:

```
pip install "fastapi[standard]"
```

❎ `uvicorn` 👷 💽:

```
pip install "uvicorn[standard]"
```

{* ../../docs_src/response_headers/tutorial001.py hl[10:12] *}

/// note | Detalles Técnicos

También podrías usar `from starlette.responses import Response` o `from starlette.responses import JSONResponse`.

# 헤더 매개변수 모델

관련 있는 **헤더 매개변수** 그룹이 있는 경우, **Pydantic 모델**을 생성하여 선언할 수 있습니다.

이를 통해 **여러 위치**에서 **모델을 재사용** 할 수 있고 모든 매개변수에 대한 유효성 검사 및 메타데이터를 한 번에 선언할 수도 있습니다. 😎

/// note | 참고

이 기능은 FastAPI 버전 `0.115.0` 이후부터 지원됩니다. 🤓

///

## Pydantic 모델을 사용한 헤더 매개변수

**Pydantic 모델**에 필요한 **헤더 매개변수**를 선언한 다음, 해당 매개변수를 `Header`로 선언합니다:

{* ../../docs_src/header_param_models/tutorial001_an_py310.py hl[9:14,18] *}

# Note: We intentionally don't add the flags we'd need to make Flags and Enums
# work. That's because the Proguard configuration required to make them work on
# optimized code would preclude lots of optimization, like converting enums
# into ints.

# Throwables uses internal APIs for lazy stack trace resolution
-dontnote sun.misc.SharedSecrets
-keep class sun.misc.SharedSecrets {
  *** getJavaLangAccess(...);
}
-dontnote sun.misc.JavaLangAccess

          }
          i++;
        }
      }
    }
    return utf8Length;
  }

  /**
   * Returns {@code true} if {@code bytes} is a <i>well-formed</i> UTF-8 byte sequence according to
   * Unicode 6.0. Note that this is a stronger criterion than simply whether the bytes can be
   * decoded. For example, some versions of the JDK decoder will accept "non-shortest form" byte