## Pydantic `Settings` { #pydantic-settings }

Felizmente, o Pydantic fornece uma ótima utilidade para lidar com essas configurações vindas de variáveis de ambiente com <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/" class="external-link" target="_blank">Pydantic: Settings management</a>.

### Instalar `pydantic-settings` { #install-pydantic-settings }

{* ../../docs_src/settings/app02_an_py39/config.py hl[10] *}

Обратите внимание, что теперь мы не создаем экземпляр по умолчанию `settings = Settings()`.

### Основной файл приложения { #the-main-app-file }

Теперь мы создаем зависимость, которая возвращает новый `config.Settings()`.

{* ../../docs_src/settings/app02_an_py39/main.py hl[6,12:13] *}

/// tip | Совет

## Pydantic `Settings` { #pydantic-settings }

Glücklicherweise bietet Pydantic ein großartiges Werkzeug zur Verarbeitung dieser Einstellungen, die von Umgebungsvariablen stammen, mit <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/" class="external-link" target="_blank">Pydantic: Settings Management</a>.

### `pydantic-settings` installieren { #install-pydantic-settings }

## Pydantic `Settings` { #pydantic-settings }

Afortunadamente, Pydantic proporciona una gran utilidad para manejar estas configuraciones provenientes de variables de entorno con <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/" class="external-link" target="_blank">Pydantic: Settings management</a>.

### Instalar `pydantic-settings` { #install-pydantic-settings }

### Install `pydantic-settings` { #install-pydantic-settings }

First, make sure you create your [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install the `pydantic-settings` package:

    id("io.github.gradle.develocity-conventions-plugin").version("0.12.1")
    id("org.gradle.toolchains.foojay-resolver-convention").version("1.0.0")
}

include("build-environment")
include("configuration-cache-compatibility")

from pydantic.v1 import BaseSettings


class Settings(BaseSettings):
    app_name: str = "Awesome API"
    admin_email: str
    items_per_user: int = 50


settings = Settings()
app = FastAPI()


@app.get("/info")
async def info():
    return {
        "app_name": settings.app_name,
        "admin_email": settings.admin_email,
        "items_per_user": settings.items_per_user,

## Conditional OpenAPI from settings and env vars { #conditional-openapi-from-settings-and-env-vars }

You can easily use the same Pydantic settings to configure your generated OpenAPI and the docs UIs.

For example:

{* ../../docs_src/conditional_openapi/tutorial001_py39.py hl[6,11] *}

Here we declare the setting `openapi_url` with the same default of `"/openapi.json"`.

import org.apache.maven.api.services.Sources;
import org.apache.maven.api.settings.Mirror;
import org.apache.maven.api.settings.Profile;
import org.apache.maven.api.settings.Proxy;
import org.apache.maven.api.settings.Repository;
import org.apache.maven.api.settings.Server;
import org.apache.maven.api.settings.Settings;
import org.apache.maven.api.spi.PropertyContributor;

def main() -> None:
    logging.basicConfig(level=logging.INFO)
    settings = Settings()
    logging.info(f"Using config: {settings.model_dump_json()}")
    g = Github(settings.github_token.get_secret_value())
    repo = g.get_repo(settings.github_repository)

    discussion_nodes = get_discussion_nodes(settings=settings)
    experts_results = get_discussions_experts(discussion_nodes=discussion_nodes)