Aber dieser Leitfaden zeigt Ihnen mehr oder weniger, wie die beiden normalerweise verwendet werden.

///

### Pydantics `exclude_unset`-Parameter verwenden

Wenn Sie Teil-Aktualisierungen entgegennehmen, ist der `exclude_unset`-Parameter in der `.model_dump()`-Methode von Pydantic-Modellen sehr nützlich.

Wie in `item.model_dump(exclude_unset=True)`.

/// info

    /** The parameter for exact phrase query. */
    public static final String AS_EPQ = "epq";

    /** The parameter for query. */
    public static final String AS_Q = "q";

    /** The parameter for filetype. */
    public static final String AS_FILETYPE = "filetype";

    /** The parameter for sitesearch. */
    public static final String AS_SITESEARCH = "sitesearch";

    /** The parameter for occurrence. */

MINIO_IDENTITY_PLUGIN_COMMENT       (sentence)  optionally add a comment to this setting
```

If provided, the auth token parameter is sent as an authorization header.

`MINIO_IDENTITY_PLUGIN_ROLE_POLICY` is a required parameter and can be list of comma separated policy names.

In that case, **FastAPI** also provides you with the tools to build it.

///

When we create an instance of the `OAuth2PasswordBearer` class we pass in the `tokenUrl` parameter. This parameter contains the URL that the client (the frontend running in the user's browser) will use to send the `username` and `password` in order to get a token.

{* ../../docs_src/security/tutorial001_an_py39.py hl[8] *}

        try {
            final RequestParameter parameter = RequestParameter.parse(request);
            final String[] langs = searchHelper.getLanguages(request, parameter);

            final SuggestHelper suggestHelper = ComponentUtil.getSuggestHelper();
            final SuggestRequestBuilder builder = suggestHelper.suggester().suggest();
            builder.setQuery(parameter.getQuery());

* Die Variable `items_s` ist ein `set`, und jedes seiner Elemente ist vom Typ `bytes`.

#### Dict

Um ein `dict` zu definieren, übergeben Sie zwei Typ-Parameter, getrennt durch Kommas.

Der erste Typ-Parameter ist für die Schlüssel des `dict`.

Der zweite Typ-Parameter ist für die Werte des `dict`:

//// tab | Python 3.9+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial008_py39.py!}
```

## API Request Parameters

### Version

    * Əgər `None` olmasaydı, bu məcburi parametr olardı (`PUT` metodunun gövdəsində olduğu kimi).
* `PUT` sorğusu üçün, `/items/{item_id}` gövdəsini JSON olaraq oxuyacaq:
    * `name` adında məcburi bir parametr olub olmadığını və əgər varsa, tipinin `str` olub olmadığını yoxlayacaq.

    public void test_hasConditionQuery_withQuery() {
        // Test with query parameter
        testParams.conditions.put(SearchRequestParams.AS_Q, new String[] { "test query" });
        assertTrue(searchRequestParams.hasConditionQuery());
    }

    public void test_hasConditionQuery_withEmptyQuery() {
        // Test with empty query parameter
        testParams.conditions.put(SearchRequestParams.AS_Q, new String[] { "" });

 *
 * Neither of the built-in URL models offer direct access to path segments or query parameters.
 * Manually using `StringBuilder` to assemble these components is cumbersome: do '+' characters get
 * silently replaced with spaces? If a query parameter contains a '&', does that get escaped?
 * By offering methods to read and write individual query parameters directly, application
 * developers are saved from the hassles of encoding and decoding.
 *