Dans les versions précédentes de Python, vous auriez utilisé des *threads* ou <a href="https://www.gevent.org/" class="external-link" target="_blank">Gevent</a>.  Mais le code aurait été bien plus difficile à comprendre, débugger, et concevoir.

Dans les versions précédentes de Javascript NodeJS / Navigateur, vous auriez utilisé des "callbacks". Menant potentiellement à ce que l'on appelle le "callback hell".

      rawSource.use {
        val source = rawSource.buffer()
        val urlLine = source.readUtf8LineStrict()
        // Choice here is between failing with a correct RuntimeException
        // or mostly silently with an IOException
        url = urlLine.toHttpUrlOrNull() ?: throw IOException("Cache corruption for $urlLine").also {
          Platform.get().log("cache corruption", WARN, it)
        }

Mas quando você importa `Query`, `Path`, `Depends`, `Security` entre outros de `fastapi`, eles são na verdade funções que retornam classes especiais.

///

## Utilize `SecurityScopes`

Agora atualize a dependência `get_current_user`.

Este é o usado pelas dependências acima.

def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Ou utilisez <code>async def</code> ...</summary>

Si votre code utilise `async` / `await`, utilisez `async def` :

```Python hl_lines="9  14"
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():

    toggle:
      icon: material/lightbulb
      name: Switch to dark mode
  - media: '(prefers-color-scheme: dark)'
    scheme: slate
    primary: teal
    accent: amber
    toggle:
      icon: material/lightbulb-outline
      name: Switch to system preference
  features:
  - content.code.annotate
  - content.code.copy
  - content.footnote.tooltips
  - content.tabs.link
  - content.tooltips
  - navigation.footer

        </div>
        <section class="content">
            <la:form action="/admin/general/">
                <div class="row">
                    <div class="col-md-12">
                        <div class="card card-outline card-success">
                            <div class="card-body">
                                <div>
                                    <la:info id="msg" message="true">

///

## Resource Utilization { #resource-utilization }

Your server(s) is (are) a **resource**, you can consume or **utilize**, with your programs, the computation time on the CPUs, and the RAM memory available.

@SuppressWarnings("WrongCommentType") // false positive
abstract class AbstractMapBasedMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimap<K, V> implements Serializable {
  /*
   * Here's an outline of the overall design.
   *
   * The map variable contains the collection of values associated with each
   * key. When a key-value pair is added to a multimap that didn't previously

	// The assertion is removed from this block since the purpose of this block is to find races
	// The purpose this block is not to check for correctness of functionality
	// Run the test with -race flag to utilize this
	var wg sync.WaitGroup
	for range testConcurrencyLevel {
		wg.Add(1)
		go func() {
			defer wg.Done()
			// HTTP request to create the bucket.

          <type>String</type>
        </field>
      </fields>
    </class>
    <class>
      <name>Extension</name>
      <version>4.0.0+</version>
      <description>Describes a build extension to utilise.</description>
      <fields>
        <field>
          <name>groupId</name>
          <version>4.0.0+</version>
          <description>The group ID of the extension's artifact.</description>