8. Notice that this *path operation function* uses regular `def` instead of `async def`.

    As always, in FastAPI you can combine `def` and `async def` as needed.

    If you need a refresher about when to use which, check out the section _"In a hurry?"_ in the docs about [`async` and `await`](../async.md#in-a-hurry){.internal-link target=_blank}.

/// tip

If you need GraphQL, I still would recommend you check out <a href="https://strawberry.rocks/" class="external-link" target="_blank">Strawberry</a>, as it's based on type annotations instead of custom classes and types.

///

## Learn More { #learn-more }

val spockVersion = if (isGroovy4) "2.3-groovy-4.0" else "2.3-groovy-3.0"
val groovyGroup = if (isGroovy4) "org.apache.groovy" else "org.codehaus.groovy"
val asmVersion = "9.9"
// To try out newer kotlin versions
val kotlinVersion = providers.gradleProperty("buildKotlinVersion")
    .getOrElse(embeddedKotlinVersion)

dependencies {
    constraints {
        api("org.gradle.guides:gradle-guides-plugin:0.24.0")

         * Matcher checking each item is present exactly once in a given iterable, but an any position,
         * and that there are no unexpected items.
         */
        private
        fun <T> inAnyOrder(items: Array<out T>): Matcher<Iterable<T>> = Matchers.containsInAnyOrder(*items)

        fun newApi(thing: String, desc: String): String =
            "$thing ${describe(thing, desc)}: New public API in 2.0 (@Incubating)"

# protobuf dependencies ourselves. By default this value is false, but some 
# projects enable it, which we don't want here.
# common --define=use_fast_cpp_protos=true

# Make Bazel print out all options from rc files.
common --announce_rc

# TODO(mihaimaruseac): Document this option or remove if no longer needed
common --define=grpc_no_ares=true

* Die interaktive API-Dokumentation wird automatisch aktualisiert, einschließlich des neuen Bodys:

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Klicken Sie auf den Button „Try it out“, damit können Sie die Parameter ausfüllen und direkt mit der API interagieren:

![Swagger UI Interaktion](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

    * New docs: [FastAPI CLI](https://fastapi.tiangolo.com/fastapi-cli/).

Try it out with:

```console
$ pip install --upgrade fastapi

$ fastapi dev main.py


 ╭────────── FastAPI CLI - Development mode ───────────╮
 │                                                     │