* `response_model_exclude_none=True`

详见 [Pydantic 文档](https://docs.pydantic.dev/1.10/usage/exporting_models/#modeldict)中对 `exclude_defaults` 和 `exclude_none` 的说明。

///

#### 默认字段有实际值的数据 { #data-with-values-for-fields-with-defaults }

但是，如果你的数据在具有默认值的模型字段中有实际的值，例如 ID 为 `bar` 的项：

```Python hl_lines="3  5"
{
    "name": "Bar",
    "description": "The bartenders",
    "price": 62,
    "tax": 20.2
}
```

labels.maxSize=最大大小
labels.order=顺序
labels.purgeSuggestSearchLogDay=删除以前的建议信息
labels.q=查询
labels.roles=角色
labels.suggestSearchLog=建议搜索日志
labels.suggestWord=建议词
labels.targetLabel=标签
labels.term=搜索词
labels.fields=字段
labels.ex_q=扩展查询
labels.oldPassword=当前密码
labels.newPassword=新密码
labels.confirmNewPassword=确认新密码

labels.menu_system=系统
labels.menu_wizard=向导
labels.menu_crawl_config=通用

      size += list.size();
    }

    return new ImmutableListMultimap<>(builder.buildOrThrow(), size);
  }

  /**
   * An instance created in {@link #readObject} to be returned from {@link #readResolve}. This field
   * is used only by those methods, and it is never set in a "normal" instance.
   *
   * <p>For more background, see {@code ConcurrentHashMultiset.deserializationReplacement}.
   */

func TestFields(t *testing.T) {
	for _, tt := range fieldstests {
		b := []byte(tt.s)
		a := Fields(b)

		// Appending to the results should not change future results.
		var x []byte
		for _, v := range a {
			x = append(v, 'z')
		}

		result := sliceOfString(a)
		if !slices.Equal(result, tt.a) {
			t.Errorf("Fields(%q) = %v; want %v", tt.s, a, tt.a)
			continue
		}

  private class Itr implements Iterator<E> {
    /** Index of element to be returned by next, or a negative number if no such. */
    private int nextIndex;

    /**
     * nextItem holds on to item fields because once we claim that an element exists in hasNext(),
     * we must return it in the following next() call even if it was in the process of being removed
     * when hasNext() was called.
     */

        }

        if (!clickLogList.isEmpty()) {
            processClickLog(clickLogList);
            updateClickFieldInIndex(clickCountMap);
        }
    }

    /**
     * Updates the click field in the index.
     *
     * @param clickCountMap The click count map.
     */
    protected void updateClickFieldInIndex(final Map<String, Integer> clickCountMap) {
        if (!clickCountMap.isEmpty()) {

            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]
}
```

以下のテキスト版を取得します:

```
Validation errors:
Field: ('path', 'item_id'), Error: Input should be a valid integer, unable to parse string as an integer
```

### `HTTPException`エラーハンドラのオーバーライド { #override-the-httpexception-error-handler }

	}

	if createdByRel, ok := userSchema.Relationships.Relations["CreatedBy"]; ok {
		if createdByRel.FieldSchema != userSchema {
			t.Fatalf("expects same field schema, but got new %p, old %p", createdByRel.FieldSchema, userSchema)
		}
	} else {
		t.Fatalf("expects created by relations, but not found")
	}
}

func TestEmbeddedHas(t *testing.T) {
	type Toy struct {

  /**
   * Divides an iterator into unmodifiable sublists of the given size (the final list may be
   * smaller). For example, partitioning an iterator containing {@code [a, b, c, d, e]} with a
   * partition size of 3 yields {@code [[a, b, c], [d, e]]} -- an outer iterator containing two
   * inner lists of three and two elements, all in the original order.
   *
   * <p>The returned lists implement {@link java.util.RandomAccess}.
   *

  /**
   * Divides an iterator into unmodifiable sublists of the given size (the final list may be
   * smaller). For example, partitioning an iterator containing {@code [a, b, c, d, e]} with a
   * partition size of 3 yields {@code [[a, b, c], [d, e]]} -- an outer iterator containing two
   * inner lists of three and two elements, all in the original order.
   *
   * <p>The returned lists implement {@link java.util.RandomAccess}.
   *