要使 `await` 工作，它必须位于支持这种异步机制的函数内。因此，只需使用 `async def` 声明它：

```Python hl_lines="1"
async def get_burgers(number: int):
    # 执行一些异步操作来制作汉堡
    return burgers
```

...而不是 `def`:

```Python hl_lines="2"
# 这不是异步的
def get_sequential_burgers(number: int):
    # 执行一些顺序操作来制作汉堡
    return burgers
```

使用 `async def`，Python 就知道在该函数中，它将遇上 `await`，并且它可以"暂停" ⏸ 执行该函数，直至执行其他操作 🔀 后回来。

  elif var:
    write_to_bazelrc('build --config=%s' % bazel_config_name)
  environ_cp[var_name] = str(var)


def convert_version_to_int(version):
  """Convert a version number to a integer that can be used to compare.

  Version strings of the form X.YZ and X.Y.Z-xxxxx are supported. The
  'xxxxx' part, for instance 'homebrew' on OS/X, is ignored.

  Args:

 * <p>{@code TypeToken} is serializable when no type variable is contained in the type.
 *
 * <p>Note to Guice users: {@code TypeToken} is similar to Guice's {@code TypeLiteral} class except
 * that it is serializable and offers numerous additional utility methods.
 *
 * @author Bob Lee
 * @author Sven Mawson
 * @author Ben Yu
 * @since 12.0
 */
@SuppressWarnings("serial") // SimpleTypeToken is the serialized form.

 * strings. This only supports the {@code "%s"} specifier, not the full range of {@link
 * java.util.Formatter} specifiers. However, note that if the number of arguments does not match the
 * number of occurrences of {@code "%s"} in the format string, {@code Preconditions} will still
 * behave as expected, and will still include all argument values in the error message; the message

        assertEquals("Software Engineer", result[1]);
        assertEquals("******@****.***", result[2]);
        assertEquals("\"Loves \"\"coding\"\" and coffee\"", result[3]);

        // CSV with numbers and mixed data types - quoted fields keep quotes
        value = "123,\"Product Name\",45.67,\"Description with, comma\"";
        result = KuromojiCSVUtil.parse(value);
        assertEquals(4, result.length);

 * ServerSocket} is closed even if the {@code MyServer} object is garbage-collected without calling
 * its {@code close} method. You could use a finalizer to accomplish this, but that has a
 * number of well-known problems. Here is how you might use this class instead:
 *
 * {@snippet :
 * public class MyServer implements Closeable {
 *   private static final FinalizableReferenceQueue frq = new FinalizableReferenceQueue();

Foundation may assign the responsibility to serve as the Agreement Steward
to a suitable separate entity. Each new version of the Agreement will be given
a distinguishing version number. The Program (including Contributions) may
always be distributed subject to the version of the Agreement under which
it was received. In addition, after a new version of the Agreement is published,

//     endpoint: "https://notify.endpoint" # notification endpoint to receive job status events
//     token: "Bearer xxxxx" # optional authentication token for the notification endpoint

//   retry:
//     attempts: 10 # number of retries for the job before giving up
//     delay: "500ms" # least amount of delay between each retry

//go:generate msgp -file $GOFILE -unexported

// BatchKeyRotationType defines key rotation type

     *
     * @param replaceAliases whether to replace aliases after reindexing
     * @param resetDictionaries whether to reset dictionaries during reindexing
     * @param numberOfShards the number of shards for the new index
     * @param autoExpandReplicas the auto expand replicas setting for the new index
     * @return true if the reindex operation started successfully, false otherwise
     */

    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**
     * Displays a paginated list of web crawler configurations.
     *
     * @param pageNumber the page number to display (optional)
     * @param form the search form containing filter criteria
     * @return HTML response with the web config list
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })