```Python
contents = await myfile.read()
```

在普通 `def` *路径操作函数*  内，则可以直接访问 `UploadFile.file`，例如：

```Python
contents = myfile.file.read()
```

/// note | "`async` 技术细节"

使用 `async` 方法时，**FastAPI** 在线程池中执行文件方法，并 `await` 操作完成。

///

/// note | "Starlette 技术细节"

**FastAPI** 的 `UploadFile` 直接继承自 **Starlette** 的 `UploadFile`，但添加了一些必要功能，使之与 **Pydantic** 及 FastAPI 的其它部件兼容。

///

## 什么是 「表单数据」

	testGenerateOption(t, false, func(t *testing.T, actual, expected []admitv1.MutatingWebhook) {
		if err := assert.Compare(actual, expected); err == nil {
			t.Errorf("expected diff between webhooks, got none")
		}
	})

				CheckUser(t, models3[idx], user)
			})
		}
	}

	var none []User
	if err := DB.Where("name in (?)", []string{}).Find(&none).Error; err != nil || len(none) != 0 {
		t.Errorf("errors happened when query find with in clause and zero length parameter: %v, length: %v", err, len(none))
	}
}

func TestQueryWithAssociation(t *testing.T) {

    assertThat(cookie.sameSite).isEqualTo(sameSite)
  }

  /** Note that we permit building a cookie that doesn’t follow the rules. */
  @Test fun builderSameSiteNoneDoesNotRequireSecure() {
    val cookieBuilder =
      Cookie.Builder()
        .name("a")
        .value("b")
        .domain("example.com")
        .sameSite("None")

    val cookie = cookieBuilder.build()

    return Iterators.find(iterable.iterator(), predicate);
  }

  /**
   * Returns the first element in {@code iterable} that satisfies the given predicate, or {@code
   * defaultValue} if none found. Note that this can usually be handled more naturally using {@code
   * tryFind(iterable, predicate).or(defaultValue)}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@code

  /**
   * Returns true if `other` is a `Headers` object with the same headers, with the same casing, in
   * the same order. Note that two headers instances may be *semantically* equal but not equal
   * according to this method. In particular, none of the following sets of headers are equal
   * according to this method:
   *
   * 1. Original
   * ```
   * Content-Type: text/html

    assertTrue("Expected another permutation, but there was none.", permutations.hasNext());
    assertEquals(expectedPermutation, permutations.next());
  }

  private <T> void assertNoMorePermutations(Iterator<List<T>> permutations) {
    assertFalse("Expected no more permutations, but there was one.", permutations.hasNext());
    try {
      permutations.next();

// corresponding error value. NB When there is more than one error value that
// occurs maximum number of times, the error value returned depends on how
// golang's map orders keys. This doesn't affect correctness as long as quorum
// value is greater than or equal to simple majority, since none of the equally
// maximal values would occur quorum or more number of times.

例えば、パスパラメータ`item_id`に対して`title`のメタデータを宣言するには以下のようにします:

```Python hl_lines="8"
{!../../docs_src/path_params_numeric_validations/tutorial001.py!}
```

/// note | "備考"

パスの一部でなければならないので、パスパラメータは常に必須です。

そのため、`...`を使用して必須と示す必要があります。

それでも、`None`で宣言しても、デフォルト値を設定しても、何の影響もなく、常に必要とされていることに変わりはありません。

///

## 必要に応じてパラメータを並び替える

クエリパラメータ`q`を必須の`str`として宣言したいとしましょう。

         },
         "fieldConfig": {
            "defaults": {
               "custom": {
                  "drawStyle": "bars",
                  "fillOpacity": 100,
                  "gradientMode": "none",
                  "showPoints": "never",
                  "stacking": {
                     "mode": "normal"
                  }
               },
               "unit": "ops"
            },