```

</div>

И откройте документацию по адресу <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

Вы увидите автоматическую документацию API для основного приложения, включающую только его собственные _операции пути_:

<img src="/img/tutorial/sub-applications/image01.png">

# Данные формы { #form-data }

Когда вам нужно получить поля формы вместо JSON, вы можете использовать `Form`.

/// info | Дополнительная информация

Чтобы использовать формы, сначала установите <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

* `datetime.timedelta`:
    * A Python `datetime.timedelta`.
    * In requests and responses will be represented as a `float` of total seconds.
    * Pydantic also allows representing it as a "ISO 8601 time diff encoding", <a href="https://docs.pydantic.dev/latest/concepts/serialization/#custom-serializers" class="external-link" target="_blank">see the docs for more info</a>.
* `frozenset`:
    * In requests and responses, treated the same as a `set`:

    * Un `datetime.timedelta` de Python.
    * En requests y responses se representará como un `float` de segundos totales.
    * Pydantic también permite representarlo como una "codificación de diferencia horaria ISO 8601", <a href="https://docs.pydantic.dev/latest/concepts/serialization/#custom-serializers" class="external-link" target="_blank">consulta la documentación para más información</a>.
* `frozenset`:

mithilfe einer Kombination von Tools selbst **einen Server deployen**, Sie könnten einen **Cloud-Dienst** nutzen, der einen Teil der Arbeit für Sie erledigt, oder andere mögliche Optionen.

Zum Beispiel haben wir, das Team hinter FastAPI, <a href="https://fastapicloud.com" class="external-link" target="_blank">**FastAPI Cloud**</a> entwickelt, um das Deployment von FastAPI-Apps in der Cloud so reibungslos wie möglich zu gestalten, mit derselben Developer-Experience wie beim Arbeiten mit FastAPI....

</div>

////

當學習[虛擬環境](virtual-environments.md)時，這些資訊將會很有用。

## 結論

透過這個教學，你應該對**環境變數**是什麼以及如何在 Python 中使用它們有了基本的了解。

你也可以在<a href="https://zh.wikipedia.org/wiki/%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F" class="external-link" target="_blank">環境變數 - 維基百科</a> (<a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">Wikipedia for Environment Variable</a>) 中了解更多關於它們的資訊。

        "<a href='ref'>text</a>"          | "<p><a href='ref'>text</a></p>"
        "<a name='ref'/> text"            | "<a name='ref'></a><p> text</p>"
        "<a name='ref'/><h2>heading</h2>" | "<a name='ref'></a><h2>heading</h2>"
        "<p><a name='ref'/>"              | "<p><a name='ref'></a></p>"
        "<p><a name='ref'/>text"          | "<p><a name='ref'></a>text</p>"

하지만 `Request` 객체에 직접 접근해야 하는 상황이 있을 수 있습니다.

## `Request` 객체에 대한 세부 사항

**FastAPI**는 실제로 내부에 **Starlette**을 사용하며, 그 위에 여러 도구를 덧붙인 구조입니다. 따라서 여러분이 필요할 때 Starlette의 <a href="https://www.starlette.dev/requests/" class="external-link" target="_blank">`Request`</a> 객체를 직접 사용할 수 있습니다.

import java.util.Comparator;
import org.jspecify.annotations.Nullable;

/**
 * A utility for performing a chained comparison statement. <b>Note:</b> Java 8+ users should
 * generally prefer the methods in {@link Comparator}; see <a href="#java8">below</a>.
 *
 * <p>Example usage of {@code ComparisonChain}:
 *
 * {@snippet :
 * public int compareTo(Foo that) {
 *   return ComparisonChain.start()
 *       .compare(this.aString, that.aString)

    return new Stats(count, mean, sumOfSquaresOfDeltas, min, max);
  }

  /** Returns the number of values. */
  public long count() {
    return count;
  }

  /**
   * Returns the <a href="http://en.wikipedia.org/wiki/Arithmetic_mean">arithmetic mean</a> of the
   * values. The count must be non-zero.
   *
   * <p>If these values are a sample drawn from a population, this is also an unbiased estimator of