Wenn Sie eine ältere Version haben, werden Sie Fehler angezeigt bekommen, wenn Sie versuchen, `Annotated` zu verwenden.

Bitte [aktualisieren Sie FastAPI](../../deployment/versions.md#upgrade-der-fastapi-versionen){.internal-link target=_blank} daher mindestens zu Version 0.95.1, bevor Sie `Annotated` verwenden.

///

### `Depends` importieren

//// tab | Python 3.10+

```Python hl_lines="3"

Se você precisa refrescar a memória rapidamente sobre como usar tipos do Python (mesmo que você não use o FastAPI), confira esse rápido tutorial: [Tipos do Python](python-types.md){.internal-link target=_blank}.

Você escreve Python padrão com tipos:

```Python
from datetime import date

from pydantic import BaseModel

# Declare uma variável como str

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package sql

import (
	"encoding/json"
	"errors"
	"fmt"
	"math"
	"strings"

	"github.com/minio/minio/internal/s3select/jstream"
	"github.com/minio/simdjson-go"
)

var (
	errInvalidASTNode    = errors.New("invalid AST Node")
	errExpectedBool      = errors.New("expected bool")

    bytes in would always yield deflated bytes out and this isn't always the case!

 *  Fix: Reliably update and invalidate the disk cache on windows. As originally designed our
    internal `DiskLruCache` assumes an inode-like file system, where it's fine to delete files that
    are currently being read or written. On Windows the file system forbids this so we must be more
    careful when deleting and renaming files.

	"bytes"
	"encoding/hex"
	"errors"
	"fmt"
	"hash"
	"io"
	"net/http"
	"strings"
	"time"

	"github.com/dustin/go-humanize"
	"github.com/minio/minio/internal/auth"
	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"
)

// Streaming AWS Signature Version '4' constants.
const (
	emptySHA256                   = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"

import jcifs.CIFSContext;
import jcifs.DfsReferralData;
import jcifs.DfsResolver;
import jcifs.SmbTransport;
import jcifs.internal.dfs.DfsReferralDataImpl;
import jcifs.internal.dfs.DfsReferralDataInternal;


/**
 * Caching DFS resolver implementation
 * 
 * @internal
 */
public class DfsImpl implements DfsResolver {

    private static final DfsReferralDataImpl NEGATIVE_ENTRY = new DfsReferralDataImpl();

   *
   * <p><b>Warning:</b> If the input future does not already implement {@code ListenableFuture}, the
   * returned future will emulate {@link ListenableFuture#addListener} by taking a thread from an
   * internal, unbounded pool at the first call to {@code addListener} and holding it until the
   * future is {@linkplain Future#isDone() done}.
   *
   * <p>Prefer to create {@code ListenableFuture} instances with {@link SettableFuture}, {@link

///

## 기본값 변경

   */
  private static char[] growBuffer(char[] dest, int index, int size) {
    if (size < 0) { // overflow - should be OutOfMemoryError but GWT/j2cl don't support it
      throw new AssertionError("Cannot increase internal buffer any further");
    }
    char[] copy = new char[size];
    if (index > 0) {
      System.arraycopy(dest, 0, copy, 0, index);
    }
    return copy;
  }

```

////

本例中有 3 个查询参数：

* `needy`，必选的 `str` 类型参数
* `skip`，默认值为 `0` 的 `int` 类型参数
* `limit`，可选的 `int` 类型参数

/// tip | "提示"

还可以像在[路径参数](path-params.md#_8){.internal-link target=_blank} 中那样使用 `Enum`。