# Primeros Pasos

El archivo FastAPI más simple podría verse así:

{* ../../docs_src/first_steps/tutorial001.py *}

Copia eso en un archivo `main.py`.

Ejecuta el servidor en vivo:

<div class="termy">

```console
$ <font color="#4E9A06">fastapi</font> dev <u style="text-decoration-style:single">main.py</u>
<font color="#3465A4">INFO    </font> Using path <font color="#3465A4">main.py</font>

Le tout conçu en composant réutilisable facilement intégrable à vos systèmes, data stores, base de données relationnelle ou NoSQL, etc.

### Injection de dépendances

FastAPI contient un système simple mais extrêmement puissant d'<abbr title='aussi connus sous le nom de "composants", "ressources", "services", "providers"'><strong>Injection de Dépendances</strong></abbr>.

   */
  @BeforeExperiment
  void setUp() {
    long seed = 99;
    Random rnd = new Random(seed);
    strings = new String[SAMPLES];
    for (int i = 0; i < SAMPLES; i++) {
      StringBuilder sb = new StringBuilder();
      for (int j = 0; j < charCount; j++) {
        int codePoint;
        // discard illegal surrogate "codepoints"
        do {
          codePoint = rnd.nextInt(maxCodePoint.value);

 */
package okhttp3.internal.platform.android

import javax.net.ssl.SSLSocket
import okhttp3.Protocol
import okhttp3.internal.platform.Platform
import org.bouncycastle.jsse.BCSSLSocket

/**
 * Simple non-reflection SocketAdapter for BouncyCastle.
 */
class BouncyCastleSocketAdapter : SocketAdapter {
  override fun matchesSocket(sslSocket: SSLSocket): Boolean = sslSocket is BCSSLSocket

* `swagger_css_url`: la URL donde el HTML para tu documentación de Swagger UI puede obtener el archivo **CSS**. Esta es la URL personalizada del CDN.

Y de manera similar para ReDoc...

{* ../../docs_src/custom_docs_ui/tutorial001.py hl[2:6,11:19,22:24,27:33] *}

/// tip | Consejo

La *path operation* para `swagger_ui_redirect` es una herramienta cuando utilizas OAuth2.

O `TestClient` é baseado no <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, e felizmente nós podemos utilizá-lo diretamente para testar a API.

## Exemplo

Para um exemplos simples, vamos considerar uma estrutura de arquivos semelhante ao descrito em [Bigger Applications](../tutorial/bigger-applications.md){.internal-link target=_blank} e [Testing](../tutorial/testing.md){.internal-link target=_blank}:

```
.

# Déploiement

Le déploiement d'une application **FastAPI** est relativement simple.

## Que signifie le déploiement

**Déployer** une application signifie effectuer les étapes nécessaires pour la rendre **disponible pour les
utilisateurs**.

Pour une **API Web**, cela implique normalement de la placer sur une **machine distante**, avec un **programme serveur**

          <description>Specify the version when the Mojo was added to the API. Similar to Javadoc since.</description>
        </field>
        <field>
          <name>deprecated</name>
          <version>1.0.0+</version>
          <type>String</type>
          <description>
            Description with the reason of Mojo deprecation. Similar to Javadoc {@code @deprecated}

package org.apache.maven.api.services;

import org.apache.maven.api.annotations.Nonnull;

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**

        Artifact artifact = new DefaultArtifact(
                "sample.group",
                "sample-art",
                VersionRange.createFromVersion("1.0"),
                "scope",
                "jar",
                "classifier",
                null);
        artifact.setFile(getTestFile("target/sample-art"));

        StringWagon wagon = (StringWagon) wagonManager.getWagon("string");