///

现在，即可使用表单字段 `username`，从（伪）数据库中获取用户数据。

如果不存在指定用户，则返回错误消息，提示**用户名或密码错误**。

本例使用 `HTTPException` 异常显示此错误：

{* ../../docs_src/security/tutorial003_an_py310.py hl[3,79:81] *}

### 校验密码 { #check-the-password }

至此，我们已经从数据库中获取了用户数据，但尚未校验密码。

接下来，首先将数据放入 Pydantic 的 `UserInDB` 模型。

注意：永远不要保存明文密码，本例暂时先使用（伪）哈希密码系统。

如果密码不匹配，则返回与上面相同的错误。

#### 密码哈希 { #password-hashing }

      allTasks.add(listener);
      allTasks.add(() -> currentFuture.get().addListener(listener, executor));
    }
    assertEquals(allTasks.size() + 1, barrier.getParties()); // sanity check
    for (int i = 0; i < 1000; i++) {
      Collections.shuffle(allTasks);
      AbstractFuture<String> future = new AbstractFuture<String>() {};
      AbstractFuture<String> setFuture = new AbstractFuture<String>() {};

- Kubeadm: switched the validation check for Linux kernel version to throw warnings instead of errors. ([#131919](https://github.com/kubernetes/kubernetes/pull/131919), [@neol...

                defaultReadingConverter, defaultReadingConverter, defaultNormalizer, analyzer);

        assertTrue("Should have items from multiple fields", items.size() > 0);

        // Check that items come from different fields
        boolean hasContent = items.stream().anyMatch(i -> i.getFields()[0].equals("content"));
        boolean hasTitle = items.stream().anyMatch(i -> i.getFields()[0].equals("title"));

        // Prepare test data
        String filename = "testfile.txt";
        byte[] buffer = createValidBuffer(filename, "TESTFI~1.TXT", true);

        // Decode and check return value
        int bytesConsumed = fileBothDirectoryInfo.decode(buffer, 0, buffer.length);

        // Verify bytes consumed matches the actual data size

		return
	}

	opts, err := getOpts(ctx, r, bucket, zipPath)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	getObjectInfo := objectAPI.GetObjectInfo

	// Check for auth type to return S3 compatible error.
	// type to return the correct error (NoSuchKey vs AccessDenied)
	if s3Error := checkRequestAuthType(ctx, r, policy.GetObjectAction, bucket, zipPath); s3Error != ErrNone {

	if target.client != nil {
		return nil
	}

	clientV7, err := newClientV7(target.args)
	if err != nil {
		return err
	}

	// Check es version to confirm if it is supported.
	serverSupportStatus, version, err := clientV7.getServerSupportStatus(ctx)
	if err != nil {
		return err
	}

	switch serverSupportStatus {
	case ESSUnknown:

* kubeadm: use the CRI for preflights checks ([#55055](https://github.com/kubernetes/kubernetes/pull/55055), [@runcom](https://github.com/runcom))

		}
		files = append(files, f)
	}

	// Type-check package files.
	var sizes types.Sizes
	if w.context != nil {
		sizes = types.SizesFor(w.context.Compiler, w.context.GOARCH)
	}
	conf := types.Config{
		IgnoreFuncBodies: true,
		FakeImportC:      true,
		Importer:         w,
		Sizes:            sizes,
	}
	tpkg, err := conf.Check(name, fset, files, nil)
	if err != nil {
		ctxt := "<no context>"

      "      op: '__OP_NAME__'"
      "    }"
      "    ret {"
      "      key: 'out'"
      "      value: 'error_op:out'"
      "    }";
  tensorflow::FunctionDef def;
  CHECK(tensorflow::protobuf::TextFormat::ParseFromString(
      tensorflow::str_util::StringReplace(func_str, "__OP_NAME__", op_name,
                                          /*replace_all=*/true),
      &def));