#### Define a *path operation decorator* { #define-a-path-operation-decorator }

{* ../../docs_src/first_steps/tutorial001_py39.py hl[6] *}

The `@app.get("/")` tells **FastAPI** that the function right below is in charge of handling requests that go to:

* the path `/`
* using a <abbr title="an HTTP GET method"><code>get</code> operation</abbr>

/// info | `@decorator` Info

# ----------------------------------------------------------
# Application Exception
# ---------------------
# /- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# five framework-embedded messages (don't change key names)
# - - - - - - - - - -/
errors.login.failure = 로그인에 실패했습니다.
errors.app.illegal.transition = 잘못된 전환입니다. 다시 시도하십시오.
errors.app.db.already.deleted = 다른 프로세스에 의해 삭제되었을 수 있습니다. 다시 시도하십시오.

 * href="https://docs.oracle.com/javase/8/docs/technotes/guides/language/assert.html">assertions</a>,
 * except that they are always enabled. These methods should be used instead of Java assertions
 * whenever there is a chance the check may fail "in real life". Example:
 *
 * {@snippet :
 * Bill bill = remoteService.getLastUnpaidBill();
 *
 * // In case bug 12345 happens again we'd rather just die

During server startup, prior to the server reporting healthy (via `/healthz`), not all API groups may be reported.
Wait for the server to report healthy (via `/healthz`) before depending on the information provided by the discovery APIs.

    - [Server binaries](#server-binaries-3)
    - [Node binaries](#node-binaries-3)
  - [Changelog since v1.16.11](#changelog-since-v11611)
  - [Changes by Kind](#changes-by-kind-3)
    - [API Change](#api-change)
    - [Bug or Regression](#bug-or-regression-3)
  - [Dependencies](#dependencies-3)
    - [Added](#added-3)
    - [Changed](#changed-3)
    - [Removed](#removed-3)
- [v1.16.12-rc.1](#v11612-rc1)

   * #MANY_VALUES_SUM_OF_SQUARES_OF_DELTAS}. The smallest and largest finite values are always
   * {@link #MANY_VALUES_MIN} and {@link #MANY_VALUES_MAX}, although setting non-finite values will
   * change the true min and max.
   */
  static class ManyValues {

    private final ImmutableList<Double> values;

    ManyValues(double[] values) {
      this.values = ImmutableList.copyOf(Doubles.asList(values));
    }

	}
	if config.Rule != nil {
		r.Mode = config.Rule.DefaultRetention.Mode

		t, err := UTCNowNTP()
		if err != nil {
			lockLogIf(context.Background(), err)
			// Do not change any configuration
			// upon NTP failure.
			return r
		}

		if config.Rule.DefaultRetention.Days != nil {
			r.Validity = t.AddDate(0, 0, int(*config.Rule.DefaultRetention.Days)).Sub(t)
		} else {

   *
   * <p>The returned table will be serializable if the specified table is serializable.
   *
   * <p>Consider using an {@link ImmutableTable}, which is guaranteed never to change.
   *
   * @since 11.0
   */
  public static <R extends @Nullable Object, C extends @Nullable Object, V extends @Nullable Object>

   * interpreted according to the standard code table.
   *
   * @since 8.0
   */
  public static final byte SI = 15;

  /**
   * Data Link Escape: A communication control character which will change the meaning of a limited
   * number of contiguously following characters. It is used exclusively to provide supplementary
   * controls in data communication networks.
   *
   * @since 8.0
   */

    assertThat(cookie!!.domain).isEqualTo("::1")
  }

  /**
   * These public suffixes were selected by inspecting the publicsuffix.org list. It's possible they
   * may change in the future. If this test begins to fail, please double check they are still
   * present in the public suffix list.
   */
  @Test fun domainIsPublicSuffix() {