You have been reading here some of the main concepts that you would probably need to keep in mind when deciding how to deploy your application:

* Security - HTTPS
* Running on startup
* Restarts
* Replication (the number of processes running)
* Memory
* Previous steps before starting

font-weight: bold;
L286:  padding: 4px 8px;
L287:}
L288:
L289:.daterangepicker.show-ranges.single.rtl .drp-calendar.left {
L290:  border-right: 1px solid #ddd;
L291:}
L292:
L293:.daterangepicker.show-ranges.single.ltr .drp-calendar.left {
L294:  border-left: 1px solid #ddd;
L295:}
L296:
L297:.daterangepicker.show-ranges.rtl .drp-calendar.right {
L298:  border-right: 1px solid #ddd;
L299:}
L300:
L301:.daterangepicker.show-ranges.ltr .drp-calendar.left {
L302:  border-left: 1px solid #ddd;
L303:}
...

    url: https://github.com/tiangolo/fastapi/discussions/categories/questions
  - name: Show and tell
    about: Show what you built with FastAPI or to be used with FastAPI.
    url: https://github.com/tiangolo/fastapi/discussions/categories/show-and-tell
  - name: Translations
    about: Coordinate translations in GitHub Discussions.

g.fn[R]=W,ut._jQueryInterface};var ft="collapse",dt="bs.collapse",gt="."+dt,_t=g.fn[ft],mt={toggle:!0,parent:""},pt={toggle:"boolean",parent:"(string|element)"},vt={SHOW:"show"+gt,SHOWN:"shown"+gt,HIDE:"hide"+gt,HIDDEN:"hidden"+gt,CLICK_DATA_API:"click"+gt+".data-api"},yt="show",Et="collapse",Ct="collapsing",Tt="collapsed",bt="width",St="height",Dt=".show, .collapsing",It='[data-toggle="collapse"]',wt=function(){function a(e,t){this._isTransitioning=!1,this._element=e,this._config=this._getConfig(t),this._...

g.fn[R]=W,ut._jQueryInterface};var ft="collapse",dt="bs.collapse",gt="."+dt,_t=g.fn[ft],mt={toggle:!0,parent:""},pt={toggle:"boolean",parent:"(string|element)"},vt={SHOW:"show"+gt,SHOWN:"shown"+gt,HIDE:"hide"+gt,HIDDEN:"hidden"+gt,CLICK_DATA_API:"click"+gt+".data-api"},yt="show",Et="collapse",Ct="collapsing",Tt="collapsed",bt="width",St="height",Dt=".show, .collapsing",It='[data-toggle="collapse"]',wt=function(){function a(e,t){this._isTransitioning=!1,this._element=e,this._config=this._getConfig(t),this._...

	// Output:
	// 3
	// 5
}

func ExampleCut() {
	show := func(s, sep string) {
		before, after, found := bytes.Cut([]byte(s), []byte(sep))
		fmt.Printf("Cut(%q, %q) = %q, %q, %v\n", s, sep, before, after, found)
	}
	show("Gopher", "Go")
	show("Gopher", "ph")
	show("Gopher", "er")
	show("Gopher", "Badger")
	// Output:
	// Cut("Gopher", "Go") = "", "pher", true

Trigger.FOCUS : Trigger.HOVER\n      ] = true\n    }\n\n    if ($(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {\n      context._hoverState = HoverState.SHOW\n      return\n    }\n\n    clearTimeout(context._timeout)\n\n    context._hoverState = HoverState.SHOW\n\n    if (!context.config.delay || !context.config.delay.show) {\n      context.show()\n      return\n    }\n\n    context._timeout = setTimeout(() => {\n      if (context._hoverState === HoverState.SHOW)...

```Python hl_lines="3" title="app/routers/items.py"
{!../../../docs_src/bigger_applications/app/routers/items.py!}
```

#### How relative imports work

!!! tip
    If you know perfectly how imports work, continue to the next section below.

A single dot `.`, like in:

```Python
from .dependencies import get_token_header
```

would mean:

# Exceptions - `HTTPException` and `WebSocketException`

These are the exceptions that you can raise to show errors to the client.

When you raise an exception, as would happen with normal Python, the rest of the execution is aborted. This way you can raise these exceptions from anywhere in the code to abort a request and show the error to the client.

You can use:

* `HTTPException`
* `WebSocketException`

                documentation (by default at `/docs`).

                Read more about it in the
                [FastAPI docs about how to Configure Swagger UI](https://fastapi.tiangolo.com/how-to/configure-swagger-ui/).
                """
            ),
        ] = None,
        generate_unique_id_function: Annotated[
            Callable[[routing.APIRoute], str],