app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


@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):

 *
 * <p>In order to allow proper garbage collection of unused locks, the edges of the lock graph are
 * weak references.
 *
 * <p><strong>Performance</strong>
 *
 * <p>The extra bookkeeping done by cycle detecting locks comes at some cost to performance.
 * Benchmarks (as of December 2011) show that:
 *
 * <ul>
 *   <li>for an unnested {@code lock()} and {@code unlock()}, a cycle detecting lock takes 38ns as

		test $foundFiles1 -eq $foundFiles2
		v2=$?
		[ $v1 == 0 -a $v2 == 0 ] && return 0
		sleep 10
	done
	return 1
}

function purge() {
	rm -rf "$1"
}

function fail() {
	for i in $(seq 1 3); do
		echo "server$i log:"
		cat "${WORK_DIR}/dist-minio-server$i.log"
	done
	pkill -9 minio
	echo "FAILED"
	purge "$WORK_DIR"
	exit 1
}

function __init__() {

 */
class HttpUrl private constructor(
  /** Either "http" or "https". */
  @get:JvmName("scheme") val scheme: String,
  /**
   * The decoded username, or an empty string if none is present.
   *
   * | URL                              | `username()` |
   * | :------------------------------- | :----------- |
   * | `http://host/`                   | `""`         |

/// note | Nota

FastAPI sabrá que el valor de `q` no es requerido debido al valor por defecto `= None`.

El `str | None` (Python 3.10+) o `Union` en `Union[str, None]` (Python 3.8+) no es utilizado por FastAPI para determinar que el valor no es requerido, sabrá que no es requerido porque tiene un valor por defecto de `= None`.

Pero agregar las anotaciones de tipos permitirá que tu editor te brinde un mejor soporte y detecte errores.

	rc   io.ReadCloser
	done chan struct{}
}

func (c *closeNotifier) Read(p []byte) (n int, err error) {
	n, err = c.rc.Read(p)
	if err != nil {
		if c.done != nil {
			xioutil.SafeClose(c.done)
			c.done = nil
		}
	}
	return n, err
}

func (c *closeNotifier) Close() error {
	if c.done != nil {
		xioutil.SafeClose(c.done)
		c.done = nil
	}
	return c.rc.Close()
}

  protected AbstractIterator() {}

  private enum State {
    READY,
    NOT_READY,
    DONE,
    FAILED,
  }

  private @Nullable T next;

  protected abstract @Nullable T computeNext();

  @CanIgnoreReturnValue
  protected final @Nullable T endOfData() {
    state = State.DONE;
    return null;
  }

  @Override
  public final boolean hasNext() {
    checkState(state != State.FAILED);

		return sys.store.GetBucketUsers(bucket)
	case <-ctx.Done():
		return nil, ctx.Err()
	}
}

// ListUsers - list all users.
func (sys *IAMSys) ListUsers(ctx context.Context) (map[string]madmin.UserInfo, error) {
	if !sys.Initialized() {
		return nil, errServerNotInitialized
	}
	select {
	case <-sys.configLoaded:
		return sys.store.GetUsers(), nil
	case <-ctx.Done():
		return nil, ctx.Err()
	}
}

	rv=$?

	pkill minio
	sleep 3

	if [ "$rv" -ne 0 ]; then
		for i in $(seq 0 1); do
			echo "server$i log:"
			cat "$WORK_DIR/pool-minio-900$i.log"
		done
	fi

	for i in $(seq 0 1); do
		rm -f "$WORK_DIR/pool-minio-900$i.log"
	done

	return "$rv"
}

function run_test_pool_erasure_sets_ipv6() {
	start_minio_pool_erasure_sets_ipv6

	export SERVER_ENDPOINT="[::1]:9000"

http://127.0.0.1:8000/items/?skip=20
```

🔢 💲 👆 🔢 🔜:

* `skip=20`: ↩️ 👆 ⚒ ⚫️ 📛
* `limit=10`: ↩️ 👈 🔢 💲

## 📦 🔢

🎏 🌌, 👆 💪 📣 📦 🔢 🔢, ⚒ 👫 🔢 `None`:

{* ../../docs_src/query_params/tutorial002.py hl[9] *}

👉 💼, 🔢 🔢 `q` 🔜 📦, & 🔜 `None` 🔢.

/// check

👀 👈 **FastAPI** 🙃 🥃 👀 👈 ➡ 🔢 `item_id` ➡ 🔢 & `q` 🚫,, ⚫️ 🔢 🔢.

///

## 🔢 🔢 🆎 🛠️