},
        "swedish_keywords": {
          "type":       "keyword_marker",

## OpenAPI condicional com configurações e variáveis de ambiente { #conditional-openapi-from-settings-and-env-vars }

Você pode usar facilmente as mesmas configurações do Pydantic para configurar sua OpenAPI gerada e as interfaces de usuário da documentação.

Por exemplo:

///

This is a very simple and short tutorial, if you want to learn about databases in general, about SQL, or more advanced features, go to the [SQLModel docs](https://sqlmodel.tiangolo.com/).

## Install `SQLModel` { #install-sqlmodel }

Eine Umgebungsvariable (auch bekannt als „**env var**“) ist eine Variable, die **außerhalb** des Python-Codes im **Betriebssystem** lebt und von Ihrem Python-Code (oder auch von anderen Programmen) gelesen werden kann.

Umgebungsvariablen können nützlich sein, um **Einstellungen** der Anwendung zu handhaben, als Teil der **Installation** von Python usw.

## Umgebungsvariablen erstellen und verwenden { #create-and-use-env-vars }

second_user_data = {
    "id": 4,
    "name": "Mary",
    "joined": "2018-11-30",
}

my_second_user: User = User(**second_user_data)
```

/// info | Інформація

`**second_user_data` означає:

Передати ключі та значення словника `second_user_data` безпосередньо як аргументи у вигляді «ключ-значення», еквівалентно: `User(id=4, name="Mary", joined="2018-11-30")`

///

                        return;
                    }

                    var textToWrite = JSON.stringify(appendErrorCorrections(reason), null, 4) + "\\n";
                    var textFileAsBlob = new Blob([textToWrite], {type:'text/plain'});
                    var fileNameToSaveAs = 'accepted-public-api-changes.json';

                    var downloadLink = document.createElement("a");

///

Ortam değişkeni (genelde "**env var**" olarak da anılır), Python kodunun **dışında**, **işletim sistemi** seviyesinde bulunan ve Python kodunuz (veya diğer programlar) tarafından okunabilen bir değişkendir.

Ortam değişkenleri; uygulama **ayarları**nı yönetmek, Python’un **kurulumu**nun bir parçası olarak konfigürasyon yapmak vb. durumlarda işe yarar.

## Env Var Oluşturma ve Kullanma { #create-and-use-env-vars }

Kotlin, Groovy, Java, and other JVM-based languages should be able to use the Gradle API without relying on another language's standard library.

Historically, Gradle has shipped with some Groovy types in very prominent APIs.
This required the Kotlin DSL to add special integration to work with Groovy closures.
This has also forced plugins written in languages other than Groovy to use Groovy types for some APIs.

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.di.Named;

/**
 * Component able to contribute to Maven session user properties. This SPI component is invoked
 * very early, while there is no session created yet.
 *
 * @since 4.0.0
 */
@Experimental
@Consumer
@Named
public interface PropertyContributor extends SpiService {
    /**

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Forbid Extra Form Fields { #forbid-extra-form-fields }

In some special use cases (probably not very common), you might want to **restrict** the form fields to only those declared in the Pydantic model. And **forbid** any **extra** fields.

/// note

This is supported since FastAPI version `0.114.0`. 🤓

///