Wenn Sie dieses Beispiel ausführen und auf <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a> gehen, sehen Sie als Response:

```JSON
{"item_id":"foo"}
```

## Pfad-Parameter mit Typen

Sie können den Typ eines Pfad-Parameters in der Argumentliste der Funktion deklarieren, mit Standard-Python-Typannotationen:

		case <-m.ctx.Done():
			return
		case <-t.C:
			last := time.Since(time.Unix(atomic.LoadInt64(&m.LastPing), 0))
			if last > 4*m.clientPingInterval {
				gridLogIf(m.ctx, fmt.Errorf("canceling remote connection %s not seen for %v", m.parent, last))
				m.close()
				return
			}
		}
	}
}

// checkSeq will check if sequence number is correct and increment it by 1.
func (m *muxServer) checkSeq(seq uint32) (ok bool) {

      ImmediateExecutionTensorHandle* handle) = 0;

  virtual std::vector<std::string> GetLoggedOpsTestonly() { return {}; }

  // Get a list of the names of functions that have been registered.
  virtual std::vector<string> ListFunctionNames() = 0;

  struct CacheStats {
    int64_t kernel_cache_size;
    int64_t device_cache_size;
    std::map<std::string, int64_t> func_kernel_cache_entries;

            )

        fun removed(thing: String, desc: String): Pair<String, List<String>> =
            "$thing ${describe(thing, desc)}: Is not binary compatible." to listOf("$thing has been removed")

        private
        fun describe(thing: String, desc: String) =
            if (thing == "Field") desc else "com.example.$desc"
    }

    fun BuildResult.assertOutputContains(text: String) =

        for (WeakReference<Class<? extends Exception>> knownGood : validClasses) {
          if (exceptionClass.equals(knownGood.get())) {
            return;
          }
          // TODO(cpovirk): if reference has been cleared, remove it?
        }
        checkExceptionClassValidity(exceptionClass);

        /*
         * It's very unlikely that any loaded Futures class will see getChecked called with more

        // it refers to a snapshot artifact or meta-version.
        // NOTE: Release metadata includes version information about artifacts that have been released, to allow
        // meta-versions like RELEASE and LATEST to resolve, and also to allow retrieval of the range of valid, released
        // artifacts available.

		}
		if ETag := reader.ETag(); !Equal(ETag, test.ETag) {
			t.Fatalf("Test %d: ETag mismatch: got %q - want %q", i, ETag, test.ETag)
		}
	}
}

var multipartTests = []struct { // Test cases have been generated using AWS S3
	ETags     []ETag
	Multipart ETag
}{
	{
		ETags:     []ETag{},
		Multipart: ETag{},
	},
	{
		ETags:     []ETag{must("b10a8db164e0754105b7a99be72e3fe5")},

     */
    @SuppressWarnings("GoodTime") // should accept a java.time.Duration
    void recordLoadException(long loadTime);

    /**
     * Records the eviction of an entry from the cache. This should only been called when an entry
     * is evicted due to the cache's eviction strategy, and not as a result of manual {@linkplain
     * Cache#invalidate invalidations}.
     */
    void recordEviction();

    /**

      "FINE: Q10000 scheduled after 100 µs: task",
      "FINE: Q10000 starting              : task",
      "FINE: Q10000 finished run in   0 µs: task",
    )
  }

  /** Inspect how many runnables have been enqueued. If none then we're truly sequential. */
  @Test fun singleQueueIsSerial() {
    redQueue.execute("task one", 100.µs) {
      log += "one:run@${taskFaker.nanoTime} parallel=${taskFaker.isParallel}"
    }

    ImmutableList.Builder<Integer> webSafeColorsBuilder = ImmutableList.builder();
    for (Integer red : colorElem) {
      for (Integer green : colorElem) {
        for (Integer blue : colorElem) {
          webSafeColorsBuilder.add((red << 16) + (green << 8) + blue);
        }
      }
    }
    ImmutableList<Integer> webSafeColors = webSafeColorsBuilder.build();
    assertEquals(216, webSafeColors.size());