@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

De `fastapi dev` server zou automatisch moeten herladen.

    boolean supportsValuesHashCode = supportsValuesHashCode(map);
    if (supportsValuesHashCode) {
      int expectedEntrySetHash = 0;
      for (Entry<K, V> entry : entrySet) {
        assertTrue(map.containsKey(entry.getKey()));
        assertTrue(map.containsValue(entry.getValue()));
        int expectedHash =
            (entry.getKey() == null ? 0 : entry.getKey().hashCode())

      }
    };
  }

  private static final class ArrayListSupplier<V extends @Nullable Object>
      implements Supplier<List<V>>, Serializable {
    private final int expectedValuesPerKey;

    ArrayListSupplier(int expectedValuesPerKey) {
      this.expectedValuesPerKey = checkNonnegative(expectedValuesPerKey, "expectedValuesPerKey");
    }

    @Override
    public List<V> get() {

{!> ../../docs_src/query_params/tutorial006.py!}
```

////

В этом примере, у нас есть 3 параметра запроса:

* `needy`, обязательный `str`.
* `skip`, типа `int` и со значением по умолчанию `0`.
* `limit`, необязательный `int`.

/// tip | "Подсказка"

Вы можете использовать класс `Enum` также, как ранее применяли его с [Path-параметрами](path-params.md#_7){.internal-link target=_blank}.

# | NUMERIC       | java.math.BigDecimal | decimal?      |
# | DECIMAL       | java.math.BigDecimal | decimal?      |
# | TINYINT       | java.lang.Integer    | int?          |
# | SMALLINT      | java.lang.Integer    | int?          |
# | INTEGER       | java.lang.Integer    | int?          |
# | BIGINT        | java.lang.Long       | long?         |
# | REAL          | java.math.BigDecimal | decimal?      |

  public void testRemoveUnsupported() {
    assertThrows(UnsupportedOperationException.class, () -> getMultiset().remove(e0(), 2));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemoveZeroNoOp() {
    int originalCount = getMultiset().count(e0());
    assertEquals("old count", originalCount, getMultiset().remove(e0(), 0));
    expectUnchanged();
  }

  @CollectionSize.Require(absent = ZERO)

            final long requestInterval) {
        final Deferred<SuggestIndexResponse> deferred = new Deferred<>();
        threadPool.execute(() -> {
            final long start = System.currentTimeMillis();
            int numberOfSuggestDocs = 0;
            int numberOfInputDocs = 0;
            final List<Throwable> errors = new ArrayList<>();

    int key0Count = multimap().get(k0()).size();
    assertEquals(key0Count > 0, multimap().keySet().remove(k0()));
    assertEquals(getNumElements() - key0Count, multimap().size());
    assertGet(k0());
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  public void testKeySetIteratorRemove() {
    int key0Count = multimap().get(k0()).size();

import okio.ForwardingSink
import okio.Sink

/** A sink that never throws IOExceptions, even if the underlying sink does. */
internal open class FaultHidingSink(
  delegate: Sink,
  val onException: (IOException) -> Unit,
) : ForwardingSink(delegate) {
  private var hasErrors = false

  override fun write(
    source: Buffer,
    byteCount: Long,
  ) {
    if (hasErrors) {
      source.skip(byteCount)
      return
    }

    }


    /**
     * @param stackTrace
     * @return
     */
    private static StackTraceElement[] truncateTrace ( StackTraceElement[] stackTrace ) {

        int s = 2;
        int e = stackTrace.length;

        for ( int i = s; i < e; i++ ) {
            StackTraceElement se = stackTrace[ i ];