</div>

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این اطلاعات وقتی در مورد [محیط‌های مجازی](virtual-environments.md){.internal-link target=_blank} یاد می‌گیری به‌دردت می‌خوره.

## نتیجه‌گیری

با این باید یه درک پایه‌ای از **متغیرهای محیطی** و نحوه استفاده‌شون توی پایتون داشته باشی.

می‌تونی بیشتر در موردشون توی <a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">ویکی‌پدیا برای متغیر محیطی</a> بخونی.

* <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank"><strong>Swagger UI</strong></a>, với giao diện khám phá, gọi và kiểm thử API trực tiếp từ trình duyệt.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Thay thế với tài liệu API với <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

# CORS (Cross-Origin Resource Sharing)

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS o "Cross-Origin Resource Sharing"</a> se refiere a situaciones en las que un frontend que se ejecuta en un navegador tiene código JavaScript que se comunica con un backend, y el backend está en un "origen" diferente al frontend.

## Origen

    * Pydantic ermöglicht auch die Darstellung als „ISO 8601 Zeitdifferenz-Kodierung“, <a href="https://docs.pydantic.dev/1.10/usage/exporting_models/#json_encoders" class="external-link" target="_blank">Weitere Informationen finden Sie in der Dokumentation</a>.
* `frozenset`:
    * Wird in Requests und Responses wie ein `set` behandelt:

## `jsonable_encoder` 사용

JSON 호환 가능 데이터만 수신하는 `fake_db` 데이터베이스가 존재한다고 가정하겠습니다.

예를 들면, `datetime` 객체는 JSON과 호환되는 데이터가 아니므로 이 데이터는 받아들여지지 않습니다.

따라서 `datetime` 객체는 <a href="https://en.wikipedia.org/wiki/ISO_8601" class="external-link" target="_blank">ISO format</a> 데이터를 포함하는 `str`로 변환되어야 합니다.

같은 방식으로 이 데이터베이스는 Pydantic 모델(속성이 있는 객체)을 받지 않고, `dict` 만을 받습니다.

이를 위해 `jsonable_encoder` 를 사용할 수 있습니다.

Pydantic 모델과 같은 객체를 받고 JSON 호환 가능한 버전으로 반환합니다:

# The base path of dex and the external name of the OpenID Connect service.
# This is the canonical URL that all clients MUST use to refer to dex. If a
# path is provided, dex's HTTP service will listen at a non-root URL.
issuer: http://127.0.0.1:5556/dex

# The storage configuration determines where dex stores its state. Supported
# options include SQL flavors and Kubernetes third party resources.
#

MinIO now includes support for using an Access Management Plugin. This is to allow object storage access control to be managed externally via a webhook.

When configured, MinIO sends request and credential details for every API call to an external HTTP(S) endpoint and expects an allow/deny response. MinIO is thus able to delegate access management to an external system, and users are able to use a custom solution instead of S3 standard IAM policies.

href="https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.9.5" class="external-link" target="_blank">`examples`</a>, но OpenAPI 3.0.3 основан на более старой версии JSON-схемы, которая не имела поля `examples`.

Таким образом, OpenAPI 3.0.3 определяет своё собственное поле <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md#fixed-fields-20" class="external-link" target="_blank">`example`</a> для модифицированной версии **JSON Schema**, которую...

## Detalles sobre el objeto `Request`

Como **FastAPI** es en realidad **Starlette** por debajo, con una capa de varias herramientas encima, puedes usar el objeto <a href="https://www.starlette.io/requests/" class="external-link" target="_blank">`Request`</a> de Starlette directamente cuando lo necesites.

**FastAPI** 提供了以下内容：

### 建立在開放標準的基礎上

* 使用 <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank"><strong>OpenAPI</strong></a> 來建立 API，包含<abbr title="path，也被叫做: endpoints, routes">路徑</abbr><abbr title="也叫做 HTTP 方法，例如 POST, GET, PUT, DELETE">操作</abbr>、參數、請求內文、安全性等聲明。
* 使用 <a href="https://json-schema.org/" class="external-link" target="_blank"><strong>JSON Schema</strong></a>（因為 OpenAPI 本身就是基於 JSON Schema）自動生成資料模型文件。