name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: set[str] = set()


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    description="Create an item with all the information, name, description, price, tax and a set of unique tags",
)
async def create_item(item: Item):

        projectId = "Check",
        branch = VersionedSettingsBranch.fromDslContext(),
        buildScanTags = listOf("Check"),
        subprojects = subprojectProvider
    )

    @Test
    fun `test stage tags`() {
        assertEquals(
            "-DbuildScan.PartOf=QuickFeedbackLinuxOnly,QuickFeedback,PullRequestFeedback,ReadyforNightly,ReadyforRelease",
            model.stages[0].getBuildScanCustomValueParam()
        )

    description: Union[str, None] = None
    price: Union[float, None] = None
    tax: float = 10.5
    tags: list[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The bartenders", "price": 62, "tax": 20.2},
    "baz": {"name": "Baz", "description": None, "price": 50.2, "tax": 10.5, "tags": []},
}


@app.get("/items/{item_id}", response_model=Item)

    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "get": {
                    "tags": ["items"],
                    "summary": "Get Items",
                    "operationId": "get_items_items__get",
                    "responses": {
                        "200": {

	entry.API.Status = opts.Status
	entry.Tags = make(map[string]interface{}, len(opts.Tags))
	for k, v := range opts.Tags {
		entry.Tags[k] = v
	}

	// Merge tag information if found - this is currently needed for tags
	// set during decommissioning.
	if reqInfo := logger.GetReqInfo(ctx); reqInfo != nil {
		reqInfo.PopulateTagsMap(opts.Tags)
	}
	ctx = logger.SetAuditEntry(ctx, &entry)

        500: {"description": "Server error level 0"},
    },
    default_response_class=ResponseLevel0,
    callbacks=callback_router0.routes,
)

router2_override = APIRouter(
    prefix="/level2",
    tags=["level2a", "level2b"],
    dependencies=[Depends(dep2)],
    responses={
        402: {"description": "Client error level 2"},
        502: {"description": "Server error level 2"},
    },

	for _, value := range strings.Split(field.Tag.Get("gorm"), ";") {
		if value != "" {
			v := strings.Split(value, ":")
			k := strings.TrimSpace(strings.ToUpper(v[0]))
			if k == "INDEX" || k == "UNIQUEINDEX" {
				var (
					name       string
					tag        = strings.Join(v[1:], ":")
					idx        = strings.Index(tag, ",")
					tagSetting = strings.Join(strings.Split(tag, ",")[1:], ",")

    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/users/": {
                "get": {
                    "tags": ["users"],
                    "summary": "Get Users",
                    "operationId": "get_users_users__get",
                    "responses": {
                        "200": {

{!> ../../docs_src/body_nested_models/tutorial002.py!}
```

////

## Set types

But then we think about it, and realize that tags shouldn't repeat, they would probably be unique strings.

And Python has a special data type for sets of unique items, the `set`.

Then we can declare `tags` as a set of strings:

//// tab | Python 3.10+

```Python hl_lines="12"
{!> ../../docs_src/body_nested_models/tutorial003_py310.py!}

import org.w3c.dom.Node;

public class PrunedTag {
    private final String tag;
    private String id;
    private String css;
    private String attrName;
    private String attrValue;

    public PrunedTag(final String tag) {
        this.tag = tag;
    }

    public boolean matches(final Node node) {
        if (tag.equalsIgnoreCase(node.getNodeName())) {
            if (attrName != null) {