# Démarrage

Le fichier **FastAPI** le plus simple possible pourrait ressembler à cela  :

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

Copiez ce code dans un fichier nommé `main.py`.

Démarrez le serveur :

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

     * injects the lifecycle bindings from the packaging in the next step. The context class loader is to be reset by
     * the project builder when the project is fully assembled.
     *
     * @param project The project whose class realm should be selected, must not be {@code null}.
     */
    void selectProjectRealm(MavenProject project);

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

import static org.junit.jupiter.api.condition.OS.WINDOWS;

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

		ConditionValues: getConditionValues(r, "", cred),
		IsOwner:         owner,
		Claims:          cred.Claims,
		BucketName:      resource, // overloading BucketName as that's what the policy engine uses to assemble a Resource.
	})

             * plugins that require dependency resolution, although they usually run in phases of the build where project
             * artifacts haven't been assembled yet. The prime example of this is "mvn release:prepare".
             */
            if (aggregating && areAllDependenciesInReactor(session.getProjects(), result.getUnresolvedDependencies())) {

    <glob pattern="*.aj"/>
    <sub-class-of type="text/plain"/>
  </mime-type>

  <mime-type type="text/x-assembly">
    <alias type="text/x-asm"/>
    <_comment>Assembler source code</_comment>
    <glob pattern="*.s"/>
    <glob pattern="*.S"/>
    <glob pattern="*.asm"/>
    <sub-class-of type="text/plain"/>
  </mime-type>

  <mime-type type="text/calendar">

        SMBUtil.writeInt4(contextStartOffsetFromHeader, base, offsetFieldPos);
        SMBUtil.writeInt4(ctx.length, base, offsetFieldPos + 4);

        // Assemble full body: base (fixed-size fields only), but actual context bytes sit elsewhere in the full packet
        // Return just the base; caller is responsible for placing ctx at the correct absolute offset.

        addPart(Part.createFormData(name, filename, body))
      }

      /** Add a part to the body. */
      fun addPart(part: Part) =
        apply {
          parts += part
        }

      /** Assemble the specified parts into a request body. */
      fun build(): MultipartBody {
        check(parts.isNotEmpty()) { "Multipart body must have at least one part." }