## Importe o `BaseModel` do Pydantic { #import-pydantics-basemodel }

Primeiro, você precisa importar `BaseModel` do `pydantic`:

{* ../../docs_src/body/tutorial001_py310.py hl[2] *}

## Crie seu modelo de dados { #create-your-data-model }

Então você declara seu modelo de dados como uma classe que herda `BaseModel`.

Utilize os tipos Python padrão para todos os atributos:

{* ../../docs_src/body/tutorial001_py310.py hl[5:9] *}

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[9] *}

Bu durumda **FastAPI**, `__init__` ile asla uğraşmaz veya onu önemsemez; onu doğrudan kendi kodumuzda kullanırız.

## Bir instance oluşturma { #create-an-instance }

Bu class'tan bir instance'ı şöyle oluşturabiliriz:

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[18] *}

### Создание класса `Enum` { #create-an-enum-class }

Импортируйте `Enum` и создайте подкласс, который наследуется от `str` и `Enum`.

Мы наследуемся от `str`, чтобы документация API могла понять, что значения должны быть типа `string` и отображалась правильно.

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[9] *}

В этом случае **FastAPI** вовсе не трогает `__init__` и не зависит от него — мы используем его напрямую в нашем коде.

## Создаём экземпляр { #create-an-instance }

Мы можем создать экземпляр этого класса так:

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[18] *}

			int64(len(testCase.body)), bytes.NewReader(testCase.body), testCase.accessKey, testCase.secretKey, nil)
		if err != nil {
			t.Fatalf("Test %d: %s: Failed to create HTTP request for GetBucketLocationHandler: <ERROR> %v", i+1, instanceType, err)
		}
		// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic of the handler.

						<la:option value="filename.desc">
							<la:message key="labels.search_result_sort_filename_desc" />
						</la:option>
						<la:option value="created.asc">
							<la:message key="labels.search_result_sort_created_asc" />
						</la:option>
						<la:option value="created.desc">
							<la:message key="labels.search_result_sort_created_desc" />
						</la:option>
						<la:option value="content_length.asc">

    protected final Map<String, MethodDesc[]> methodDescsCache = newHashMap();

    /** Set of invalid property names */
    protected final Set<String> invalidPropertyNames = newHashSet();

    /**
     * Creates a {@link BeanDescImpl}.
     *
     * @param beanClass
     *            the class of the bean. Must not be {@literal null}
     */
    public BeanDescImpl(final Class<?> beanClass) {

 * </p>
 * <p>
 * If the source object is a {@link Date}, {@link Calendar}, or {@link java.sql.Date}, the converted object is created using the millisecond value of the source.
 * For other types, the converted object is created from the string representation of the source object.
 * </p>
 * <p>
 * If no pattern is specified, the pattern used for conversion depends on the locale as follows:
 * </p>

	return &peerRESTClient{
		host: peer, restClient: restClient, gridHost: gridHost,
		gridConn: func() *grid.Connection {
			// Lazy initialization of grid connection.
			// When we create this peer client, the grid connection is likely not yet initialized.
			if gridHost == "" {
				bugLogIf(context.Background(), fmt.Errorf("gridHost is empty for peer %s", peer.String()), peer.String()+":gridHost")
				return nil

    public OptionalEntity<StemmerOverrideItem> getStemmerOverrideItem(final String dictId, final long id) {
        return getStemmerOverrideFile(dictId).map(file -> file.get(id).get());
    }

    /**
     * Stores (creates or updates) a stemmer override item in the specified dictionary.
     *
     * If the item ID is 0, this method performs an insert operation. Otherwise,
     * it performs an update operation for the existing item.
     *