/// tip | Підказка

Ми використовуємо `Query()`, оскільки це **query параметр**. Далі ми розглянемо інші варіанти, як-от `Path()`, `Body()`, `Header()` та `Cookie()`, які приймають ті самі аргументи, що й `Query()`.

///

Тепер FastAPI:

* **Перевірить** дані, щоб переконатися, що їхня довжина не перевищує 50 символів

		// Case with proper components
		{
			bucketName: bucketName,
			objectName: "etc/path/proper/.../etc",
			byteRange:  "",
			accessKey:  credentials.AccessKey,
			secretKey:  credentials.SecretKey,

			expectedContent: encodeResponse(getAPIErrorResponse(ctx,
				getAPIError(ErrNoSuchKey),
				getGetObjectURL("", bucketName, "etc/path/proper/.../etc"),
				"", "")),
			expectedRespStatus: http.StatusNotFound,
		},
	}

      if (mappings.containsKey(var)) {
        // Mapping already established
        // This is possible when following both superClass -> enclosingClass
        // and enclosingclass -> superClass paths.
        // Since we follow the path of superclass first, enclosing second,
        // superclass mapping should take precedence.
        return;
      }
      // First, check whether var -> arg forms a cycle

		return
	}

	// Read escaped copy source path to check for parameters.
	cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
	var vid string
	if u, err := url.Parse(cpSrcPath); err == nil {
		vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))
		// Note that url.Parse does the unescaping
		cpSrcPath = u.Path
	}

	srcBucket, srcObject := path2BucketObject(cpSrcPath)

* **Soporte del editor**.
* **Chequeo de tipos**.

...y **FastAPI** usa las mismas declaraciones para:

* **Definir requerimientos**: de parámetros de path de la request, parámetros de query, headers, bodies, dependencias, etc.
* **Convertir datos**: de la request al tipo requerido.
* **Validar datos**: provenientes de cada request:

```JSON
{"item_id": 5, "q": "somequery"}
```

আপনি ইতিমধ্যে একটি API তৈরি করেছেন যা:

- `/` এবং `/items/{item_id}` _paths_ এ HTTP অনুরোধ গ্রহণ করে।
- উভয় *path*ই `GET` অপারেশন নেয় ( যা HTTP _methods_ নামেও পরিচিত)।
- _path_ `/items/{item_id}`-এ একটি _path প্যারামিটার_ `item_id` আছে যা কিনা `int` হতে হবে।
- _path_ `/items/{item_id}`-এর একটি ঐচ্ছিক `str` _query প্যারামিটার_ `q` আছে।

### ক্রিয়াশীল API নির্দেশিকা নথি

* <abbr title="anche noto come: serializzazione, parsing, marshalling">Conversione</abbr> dei dati di input: da risorse esterne a dati e tipi di Python. È possibile leggere da:
    * JSON.
    * Path parameters.
    * Query parameters.
    * Cookies.
    * Headers.
    * Form.
    * File.

    /** The key of the message: Included Paths */
    public static final String LABELS_included_paths = "{labels.included_paths}";

    /** The key of the message: Excluded Paths */
    public static final String LABELS_excluded_paths = "{labels.excluded_paths}";

    /** The key of the message: Included Doc Paths */

    }

    /*
     * These methods "should" call checkNotNull. However, I'm wary of accidentally introducing
     * anything that might slow down execution on such a hot path. Given that the methods are only
     * package-private, I feel OK with just not testing them for NPE.
     *
     * Note that testing casValue is particularly dangerous because it uses Unsafe under some

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,operation: Can raise exceptions, including HTTPException
    client ->> dep: Start request
    Note over dep: Run code up to yield