_ = x[HandlerDeleteUser-36]
	_ = x[HandlerLoadUser-37]
	_ = x[HandlerLoadGroup-38]
	_ = x[HandlerHealBucket-39]
	_ = x[HandlerMakeBucket-40]
	_ = x[HandlerHeadBucket-41]
	_ = x[HandlerDeleteBucket-42]
	_ = x[HandlerGetMetrics-43]
	_ = x[HandlerGetResourceMetrics-44]
	_ = x[HandlerGetMemInfo-45]
	_ = x[HandlerGetProcInfo-46]
	_ = x[HandlerGetOSInfo-47]
	_ = x[HandlerGetPartitions-48]
	_ = x[HandlerGetNetInfo-49]

Ian Lance Taylor <******@****.***> 1716410320 -0700

  ]
}
```

porque o parâmetro de path `item_id` tinha o valor `"foo"`, que não é um `int`.

O mesmo erro apareceria se você fornecesse um `float` em vez de um `int`, como em: [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check | Verifique
Então, com a mesma declaração de tipo do Python, o **FastAPI** fornece validação de dados.

Observe que o erro também declara claramente exatamente o ponto onde a validação não passou.

      "input": "foo"
    }
  ]
}
```

这是因为路径参数 `item_id` 的值（`"foo"`）的类型不是 `int`。

值的类型不是 `int` 而是浮点数（`float`）时也会显示同样的错误，比如： [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check | 检查

**FastAPI** 使用同样的 Python 类型声明实现了数据校验。

注意，上面的错误清晰地指出了未通过校验的具体位置。

这在开发调试与 API 交互的代码时非常有用。

///

## 文档 { #documentation }

	VCMPPS $42, Z0, Z24, K2, K5                        // 62f13c42c2e82a
	VCMPPS $42, Z26, Z24, K2, K5                       // 62913c42c2ea2a
	VCMPPS $42, Z0, Z12, K2, K5                        // 62f11c4ac2e82a
	VCMPPS $42, Z26, Z12, K2, K5                       // 62911c4ac2ea2a
	VCMPPS $42, Z0, Z24, K2, K4                        // 62f13c42c2e02a
	VCMPPS $42, Z26, Z24, K2, K4                       // 62913c42c2e22a

Die gleiche Fehlermeldung würde angezeigt werden, wenn Sie ein `float` (also eine Kommazahl) statt eines `int`s übergeben würden, wie etwa in: [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check | Testen

Sprich, mit der gleichen Python-Typdeklaration gibt Ihnen **FastAPI** Datenvalidierung.

        final int start = bufferIndex;

        bufferIndex += 2; // reserved
        this.dataCompactionMode = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 4; // 2 reserved
        this.dataLength = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        this.dataOffset = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 12; // 10 reserved

        // v1-->v3
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.2", true, null, null, 4, 2));

        // v3-->v4
        graph.addEdge(v3, v4, new MetadataGraphEdge("1.1", true, ArtifactScopeEnum.runtime, null, 2, 2));

			prefix:      "",
			want:        true,
		},
		{
			inputConfig: `<LifecycleConfiguration><Rule><Status>Enabled</Status><Filter></Filter><Expiration><Days>42</Days><ExpiredObjectAllVersions>true</ExpiredObjectAllVersions></Expiration></Rule></LifecycleConfiguration>`,
			prefix:      "",
			want:        true,
		},
	}

	for i, tc := range testCases {

    }
  ]
}
```

çünkü path parametresi `item_id`, `int` olmayan `"foo"` değerine sahipti.

Aynı hata, şu örnekte olduğu gibi `int` yerine `float` verirseniz de ortaya çıkar: [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check | Ek bilgi

Yani, aynı Python tip tanımıyla birlikte **FastAPI** size veri doğrulama sağlar.

Dikkat edin: hata ayrıca doğrulamanın geçmediği noktayı da açıkça belirtir.