# Request Parameters

Here's the reference information for the request parameters.

These are the special functions that you can put in *path operation function* parameters or dependency functions with `Annotated` to get data from the request.

It includes:

* `Query()`
* `Path()`
* `Body()`
* `Cookie()`
* `Header()`
* `Form()`
* `File()`

You can import them all directly from `fastapi`:

```python

class CommonQueryParams:
    def __init__(self, q: Union[str, None] = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons: Annotated[CommonQueryParams, Depends()]):
    response = {}
    if commons.q:
        response.update({"q": commons.q})

    "item2": {
        "description": "Music is my aeroplane, it's my aeroplane",
        "type": "plane",
        "size": 5,
    },
}


@app.get("/items/{item_id}", response_model=Union[PlaneItem, CarItem])
async def read_item(item_id: str):

  }

  @Override
  public UnmodifiableListIterator<E> listIterator(int index) {
    return new AbstractIndexedListIterator<E>(size(), index) {
      @Override
      protected E get(int index) {
        return ImmutableList.this.get(index);
      }
    };
  }

  @Override
  public ImmutableList<E> asList() {
    return this;
  }

  @Override
  public boolean equals(@Nullable Object obj) {

        // Everything between lower and upper inclusive compares at >= 0.
        while (lower < upper) {
          int middle = (lower + upper + 1) >>> 1;
          int c = comparator.compare(list.get(middle), key);
          if (c > 0) {
            upper = middle - 1;
          } else { // c == 0
            lower = middle;
          }
        }
        return lower;
      }
    },

     */
    public Trans2GetDfsReferralResponse(final Configuration config) {
        super(config);
        this.setSubCommand(SmbComTransaction.TRANS2_GET_DFS_REFERRAL);
    }

    /**
     * Gets the DFS referral response buffer containing the referral data.
     *
     * @return the buffer
     */
    public DfsReferralResponseBuffer getDfsResponse() {
        return this.dfsResponse;
    }

    @Override

        when(evaluator.evaluate("item1")).thenReturn("item1");

        helper.setProperty(bean, "item", String.class, config);

        assertEquals(1, bean.getItems().size());
        assertEquals("item1", bean.getItems().get(0));
    }

    @Test
    void testPerformanceWithRepeatedCalls() throws Exception {
        TestBean bean1 = new TestBean();
        TestBean bean2 = new TestBean();

    _os.getenv("TF_USE_MODULAR_FILESYSTEM", "0") == "1"):
  import tensorflow_io_gcs_filesystem as _tensorflow_io_gcs_filesystem

# Lazy-load Keras v2/3.
_tf_uses_legacy_keras = (
    _os.environ.get("TF_USE_LEGACY_KERAS", None) in ("true", "True", "1"))
setattr(_current_module, "keras", _KerasLazyLoader(globals()))
_module_dir = _module_util.get_parent_dir_for_name("keras._tf_keras.keras")

            final Settings settings) {
        super(indexSettings, name);
        final String value = settings.get("replacement");
        if (value == null || value.length() == 0) {
            replacement = '\u30fc';
        } else {
            replacement = value.charAt(0);
        }
    }

    @Override

def test_call_valid():
    response = client.post("/", json={})
    assert response.status_code == 200
    assert response.json() == {}


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {