# Tutoriel - Guide utilisateur - Introduction

Ce tutoriel vous montre comment utiliser **FastAPI** avec la plupart de ses fonctionnalités, étape par étape.

Chaque section s'appuie progressivement sur les précédentes, mais elle est structurée de manière à séparer les sujets, afin que vous puissiez aller directement à l'un d'entre eux pour résoudre vos besoins spécifiques en matière d'API.

Il est également conçu pour fonctionner comme une référence future.

		{"DATA", "0", "expect two operands for DATA"},
		{"DATA", "(0), 1", "expect /size for DATA argument"},
		{"DATA", "@B(SB)/4,0", "expected '(', found B"}, // Issue 23580.
		{"DATA", "·A(SB)/4,0", "DATA value must be an immediate constant or address"},
		{"DATA", "·B(SB)/4,$0", ""},
		{"DATA", "·C(SB)/5,$0", "bad int size for DATA argument: 5"},
		{"DATA", "·D(SB)/5,$0.0", "bad float size for DATA argument: 5"},

if [[ -n "$TFCI_BUILD_PIP_PACKAGE_ADDITIONAL_WHEEL_NAMES" ]]; then
  # Re-build the wheel with the same config, but with different name(s), if any.
  # This is done after the rename_and_verify_wheel.sh run above, not to have
  # to contend with extra wheels there.
  for wheel_name in ${TFCI_BUILD_PIP_PACKAGE_ADDITIONAL_WHEEL_NAMES}; do
    echo "Building for additional WHEEL_NAME: ${wheel_name}"
    CURRENT_WHEEL_NAME_ARG="--repo_env=WHEEL_NAME=${wheel_name}"

			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         config.Comment,
			Description: config.DefaultComment,
			Optional:    true,
			Type:        "sentence",
		},
	}

#     }
#     # This means that Date does not includes NotEqual at all tables.  
#     ; Date = map:{
#         ; NotEqual = map:{}
#     }
# }
#
# *The line that starts with '#' means comment-out.
#
map:{
    ; String = map:{
        # [Include]
        # String columns may not be needed
        # to be set these condition-keys basically.
        #; GreaterThan = map:{}
        #; LessThan = map:{}

{* ../../docs_src/using_request_directly/tutorial001_py39.py hl[1,7:8] *}

Al declarar un parámetro de *path operation function* con el tipo siendo `Request`, **FastAPI** sabrá pasar el `Request` en ese parámetro.

/// tip | Consejo

Nota que en este caso, estamos declarando un parámetro de path además del parámetro del request.

Así que, el parámetro de path será extraído, validado, convertido al tipo especificado y anotado con OpenAPI.

	}

	_, err := objectAPI.GetBucketInfo(ctx, bucketName, BucketOptions{})
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// PutBucketNotification always needs a Content-Length.
	if r.ContentLength <= 0 {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
		return
	}

	values.Set("grant_type", "client_credentials")

	req, err := http.NewRequest(http.MethodPost, k.oeConfig.TokenEndpoint, strings.NewReader(values.Encode()))
	if err != nil {
		return err
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	resp, err := k.client.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	var accessToken Token

      }
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  private static Manifest manifest(String content) throws IOException {
    InputStream in = new ByteArrayInputStream(content.getBytes(US_ASCII));
    Manifest manifest = new Manifest();
    manifest.read(in);
    return manifest;
  }

  private static File fullpath(String path) {

// parse size from content-range header
func parseSizeFromContentRange(h http.Header) (sz int64, err error) {
	cr := h.Get(xhttp.ContentRange)
	if cr == "" {
		return sz, fmt.Errorf("Content-Range not set")
	}
	parts := contentRangeRegexp.FindStringSubmatch(cr)
	if len(parts) != 4 {
		return sz, fmt.Errorf("invalid Content-Range header %s", cr)
	}
	if parts[3] == "*" {