}

  /**
   * Adds each member of {@code elements} as a candidate for the top {@code k} elements. This
   * operation takes amortized linear time in the length of {@code elements}. The iterator is
   * consumed after this operation completes.
   *
   * <p>If all input data to this {@code TopKSelector} is in a single {@code Iterator}, prefer
   * {@link Ordering#leastOf(Iterator, int)}, which provides a simpler API for that use case.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

This is because uploaded files are sent as "form data".

///

## Import `File` { #import-file }

Import `File` and `UploadFile` from `fastapi`:

Validation:!1,addValidator:function(a){var b=0===a.name.indexOf("validate_")?a.name:"validate_"+a.name;void 0===a.validateOnKeyUp&&(a.validateOnKeyUp=!0),this.validators[b]=a},warn:function(a,c){"console"in b?"function"==typeof b.console.warn?b.console.warn(a):"function"==typeof b.console.log&&b.console.log(a):c&&alert(a)},getValue:function(a,b){var c=b?b.find(a):a;if(c.length>0){var d=c.eq(0).attr("type");return"radio"===d||"checkbox"===d?c.filter(":checked").val()||"":c.val()||""}return!1},val...

{* ../../docs_src/async_tests/main.py *}

文件 `test_main.py` 将包含针对 `main.py` 的测试，现在它可能看起来如下：

{* ../../docs_src/async_tests/test_main.py *}

## 运行测试

您可以通过以下方式照常运行测试：

<div class="termy">

```console
$ pytest

---> 100%
```

</div>

## 详细说明

这个标记 `@pytest.mark.anyio` 会告诉 pytest 该测试函数应该被异步调用：

{* ../../docs_src/async_tests/test_main.py hl[7] *}

/// tip

`test_main.py` 파일은 `main.py`에 대한 테스트가 있을 텐데, 다음과 같을 수 있습니다:

{* ../../docs_src/async_tests/test_main.py *}

## 실행하기

아래의 명령어로 테스트 코드를 실행합니다:

<div class="termy">

```console
$ pytest

---> 100%
```

</div>

## 자세히 보기

`@pytest.mark.anyio` 마커는 pytest에게 이 테스트 함수가 비동기로 호출되어야 함을 알려줍니다:

{* ../../docs_src/async_tests/test_main.py hl[7] *}

/// tip | 팁

## `python-jose` のインストール

PythonでJWTトークンの生成と検証を行うために、`python-jose`をインストールする必要があります：

<div class="termy">

```console
$ pip install python-jose[cryptography]

---> 100%
```

</div>

また、<a href="https://github.com/mpdavis/python-jose" class="external-link" target="_blank">Python-jose</a>だけではなく、暗号を扱うためのパッケージを追加で必要とします。

                        next = next.next();
                    } while (next != dr);

                    if (dr.getPathConsumed() > (path != null ? path.length() : 0)) {
                        log.error("Consumed more than we provided");
                    }

                    link = path != null && dr.getPathConsumed() > 0 ? path.substring(0, dr.getPathConsumed()) : "\\";
                    dr.setLink(link);

Переконайтеся, що Ви створили [віртуальне середовище](../virtual-environments.md){.internal-link target=_blank}, активували його та встановили пакет, наприклад:

```console
$ pip install python-multipart
```

Це необхідно, оскільки завантажені файли передаються у вигляді "форматованих даних форми".

///

## Імпорт `File`

Імпортуйте `File` та `UploadFile` з `fastapi`:

  }

  /**
   * Not supported. Use {@link #toImmutableBiMap} instead. This method exists only to hide {@link
   * ImmutableMap#toImmutableMap(Function, Function)} from consumers of {@code ImmutableBiMap}.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Use {@link ImmutableBiMap#toImmutableBiMap(Function, Function)}.
   * @since 33.2.0 (available since 21.0 in guava-jre)

Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo, por ejemplo:

```console
$ pip install email-validator
```

o con:

```console
$ pip install "pydantic[email]"
```

///

Y estamos usando este modelo para declarar nuestra entrada y el mismo modelo para declarar nuestra salida: