Puedes definir el valor por defecto así como toda la validación extra o los parámetros de anotaciones:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[9] *}

/// note | Detalles Técnicos

`Header` es una clase "hermana" de `Path`, `Query` y `Cookie`. También hereda de la misma clase común `Param`.

Pero recuerda que cuando importas `Query`, `Path`, `Header`, y otros de `fastapi`, en realidad son funciones que retornan clases especiales.

///

oc: occitan
oj: ᐊᓂᔑᓈᐯᒧᐎᓐ
om: Afaan Oromoo
or: ଓଡ଼ିଆ
os: ирон æвзаг
pa: ਪੰਜਾਬੀ
pi: पाऴि
pl: Polski
ps: پښتو
pt: português
qu: Runa Simi
rm: rumantsch grischun
rn: Ikirundi
ro: Română
ru: русский язык
rw: Ikinyarwanda
sa: संस्कृतम्
sc: sardu
sd: सिन्धी
se: Davvisámegiella
sg: yângâ tî sängö
si: සිංහල
sk: slovenčina
sl: slovenščina
sn: chiShona
so: Soomaaliga

 *
 * <p>The container provides mechanisms for:
 * <ul>
 *   <li>Registering and retrieving components by name</li>
 *   <li>Managing singleton instances with lifecycle hooks</li>
 *   <li>Creating prototype instances on demand</li>
 *   <li>Dependency injection using {@code @Resource} annotation</li>
 *   <li>Lifecycle management using {@code @PostConstruct} and {@code @PreDestroy} annotations</li>
 * </ul>
 *

    * Memeriksa terdapat atribut wajib`price` harus berjenis `float`.
    * Memeriksa atribut opsional `is_offer`, harus berjenis `bool`, jika ada.
    * Semua ini juga sama untuk objek json yang bersarang mendalam.
* Konversi dari dan ke JSON secara otomatis.
* Dokumentasi segalanya dengan OpenAPI, dengan menggunakan:
    * Sistem dokumentasi interaktif.
    * Sistem otomatis penghasil kode, untuk banyak bahasa.

#
# Separately, if TFCI is set *and* there are also additional TFCI_ variables
# set in the shell environment, those variables will be restored after the
# TFCI env has been loaded. This is useful for e.g. on-demand "generic" jobs
# where the user may wish to change just one option.
if [[ -z "${TFCI:-}" ]]; then
  echo '==TFCI==: The $TFCI variable is not set. This is fine as long as you'

# OpenAPI-Callbacks

Sie könnten eine API mit einer *Pfadoperation* erstellen, die einen Request an eine *externe API* auslösen könnte, welche von jemand anderem erstellt wurde (wahrscheinlich derselbe Entwickler, der Ihre API *verwenden* würde).

Europe/Lisbon Europe/Ljubljana Europe/London Europe/Luxembourg Europe/Madrid Europe/Malta Europe/Mariehamn Europe/Minsk Europe/Monaco Europe/Moscow Europe/Nicosia Europe/Oslo Europe/Paris Europe/Podgorica Europe/Prague Europe/Riga Europe/Rome Europe/Samara Europe/San_Marino Europe/Sarajevo Europe/Saratov Europe/Simferopol Europe/Skopje Europe/Sofia Europe/Stockholm Europe/Tallinn Europe/Tirane Europe/Tiraspol Europe/Ulyanovsk Europe/Uzhgorod Europe/Vaduz Europe/Vatican Europe/Vienna Europe/Vilnius Europe/Volgograd...

 * **RealConnection** is the socket and streams of an HTTP/1 or HTTP/2 connection. These are created on demand to fulfill HTTP requests. They may be reused for many HTTP request/response exchanges. Their lifetime is typically shorter than a connection pool.

 * **Exchange** carries a single HTTP request/response pair.

application developers to process data retrieved from MinIO before returning it to an application. You can register a Lambda Function target on MinIO, once successfully registered it can be used to transform the data for application GET requests on demand.

This document focuses on showing a working example on how to use Object Lambda with MinIO, you must have [MinIO deployed in your environment](https://docs.min.io/community/minio-object-store/operations/installation.html) before you can start...

# Fehlerbehandlung

Es gibt viele Situationen, in denen Sie einem Client, der Ihre API benutzt, einen Fehler zurückgeben müssen.

Dieser Client könnte ein Browser mit einem Frontend, Code von jemand anderem, ein <abbr title="Internet of Things – Internet der Dinge: Geräte, die über das Internet Informationen austauschen">IoT</abbr>-Gerät, usw., sein.

Sie müssten beispielsweise einem Client sagen: