# limitations under the License.
# ==============================================================================
# Sourcing this enables Bazel remote cache (read and write)
# Note that "_push" cache configs write to GCS buckets and require
# authentication. If you are not a Googler, source "public_cache" to enable the
# public read-only cache.
# The cache configs are different for MacOS and Linux

    assertThat(transformation.isVertical()).isFalse();
    assertThat(transformation.isHorizontal()).isFalse();
    assertThat(transformation.slope()).isWithin(ALLOWED_ERROR).of(slope);
    // Note that we cannot test the actual mapping of points, as the results will be unreliable due
    // to loss of precision with this value of the slope.
  }

  public void testMappingWithSlope_maximalSlope() {

    assertThat(transformation.isVertical()).isFalse();
    assertThat(transformation.isHorizontal()).isFalse();
    assertThat(transformation.slope()).isWithin(ALLOWED_ERROR).of(slope);
    // Note that we cannot test the actual mapping of points, as the results will be unreliable due
    // to loss of precision with this value of the slope.
  }

  public void testMappingWithSlope_maximalSlope() {

Вы также можете объявить параметры тела запроса как необязательные, установив значение по умолчанию, равное `None`:

{* ../../docs_src/body_multiple_params/tutorial001_an_py310.py hl[18:20] *}

/// note | Заметка

Заметьте, что в данном случае параметр `item`, который будет взят из тела запроса, необязателен. Так как было установлено значение `None` по умолчанию.

///

因此，保存的数据会带有这个“新的” `tax` 值 `10.5`。

## 用 `PATCH` 进行部分更新 { #partial-updates-with-patch }

也可以使用 [HTTP `PATCH`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH) 操作对数据进行*部分*更新。

也就是说，你只需发送想要更新的数据，其余数据保持不变。

/// note | 注意

`PATCH` 没有 `PUT` 知名，也没那么常用。

很多团队甚至只用 `PUT` 实现部分更新。

你可以**随意**选择如何使用它们，**FastAPI** 不做任何限制。

但本指南会大致展示它们的预期用法。

///

	// returns.
	AssumedRoleUser AssumedRoleUser `xml:",omitempty"`

	// The temporary security credentials, which include an access key ID, a secret
	// access key, and a security (or session) token.
	//
	// Note: The size of the security token that STS APIs return is not fixed. We
	// strongly recommend that you make no assumptions about the maximum size. As
	// of this writing, the typical size is less than 4096 bytes, but that can vary.

    putEdge(N1, N1);
    assertThat(graph.outDegree(N1)).isEqualTo(2);
    putEdge(N2, N1);
    assertThat(graph.outDegree(N1)).isEqualTo(3);
  }

  // Stable order tests

  // Note: Stable order means that the ordering doesn't change between iterations and versions.
  // Ideally, the ordering in test should never be updated.
  @Test
  public void stableIncidentEdgeOrder_edges_returnsInStableOrder() {

     * @return {@code true} if passed problem is preserved by this call.
     */
    boolean reportProblem(P problem);

    /**
     * Returns all reported and preserved problems ordered by severity in decreasing order. Note: counters and
     * element count in this stream does not have to be equal.
     */
    @Nonnull
    default Stream<P> problems() {
        Stream<P> result = Stream.empty();

**FastAPI**는 그 모델을 사용해 JSON Schema를 생성하고, OpenAPI의 올바른 위치에 포함합니다.

예를 들어, 상태 코드 `404`와 Pydantic 모델 `Message`를 사용하는 다른 응답을 선언하려면 다음과 같이 작성할 수 있습니다:

{* ../../docs_src/additional_responses/tutorial001_py310.py hl[18,22] *}

/// note | 참고

`JSONResponse`를 직접 반환해야 한다는 점을 기억하세요.

///

/// info | 정보

`model` 키는 OpenAPI의 일부가 아닙니다.

**FastAPI**는 여기에서 Pydantic 모델을 가져와 JSON Schema를 생성하고 올바른 위치에 넣습니다.

올바른 위치는 다음과 같습니다:

**FastAPI** 会获取该模型，生成它的 JSON Schema，并将其放在 OpenAPI 中的正确位置。

例如，要声明另一个状态码为 `404` 且具有 Pydantic 模型 `Message` 的响应，你可以这样写：

{* ../../docs_src/additional_responses/tutorial001_py310.py hl[18,22] *}

/// note | 注意

记住你需要直接返回 `JSONResponse`。

///

/// info | 信息

`model` 键不是 OpenAPI 的一部分。

**FastAPI** 会从这里获取 Pydantic 模型，生成 JSON Schema，并把它放到正确的位置。

正确的位置是：