### Étape 1 : import `FastAPI`

```Python hl_lines="1"
{!../../docs_src/first_steps/tutorial001.py!}
```

`FastAPI` est une classe Python qui fournit toutes les fonctionnalités nécessaires au lancement de votre API.

/// note | "Détails techniques"

`FastAPI` est une classe héritant directement de `Starlette`.

      linters:
        - errcheck
        - maligned
    - path: _test\.go$
      text: "dot-imports: should not use dot imports"
    # We need to use the deprecated module since the jsonpb replacement is not backwards compatible.
    - linters:
        - staticcheck
      text: "SA1019: package github.com/golang/protobuf/jsonpb"
    - linters:
        - staticcheck

labels.duplicateHostName=Duplicate Name
labels.pageNumber=Page Number
labels.password=Password
labels.paths=Paths
labels.port=Port
labels.regex=Regular Expression
labels.regularName=Regular Name
labels.replacement=Replacement
labels.sessionId=Session ID
labels.sortOrder=Display Order
labels.updatedBy=Updated by
labels.updatedTime=Updated Time
labels.urls=URLs
labels.userAgent=User Agent
labels.username=Username

    public void setConvertUrlMap(final Map<String, String> convertUrlMap) {
        this.convertUrlMap.putAll(convertUrlMap);
    }

    public void addConvertUrl(final String regex, final String replacement) {
        convertUrlMap.put(regex, replacement);
    }

    Comparator<? super K> keyComparator = (Comparator<? super K>) Comparable::compareTo;
    sort(insertionOrder, entryComparator(keyComparator));
    return insertionOrder;
  }

  /**
   * Private replacement for {@link com.google.gwt.user.client.rpc.GwtTransient} to work around
   * build-system quirks.
   */
  private @interface GwtTransient {}

  /**

            "type":       "mapping",
            "mappings": [ "\\u200C=> "]
        },
        "removeall_filter": {
          "type": "pattern_replace",
          "pattern":"(.*)",
          "replacement":""
        }
      },
      "filter": {
        "stemmer_en_filter": {
          "type": "stemmer",
          "name": "english"
        },
        "english_override": {

   * @throws IllegalArgumentException if {@code valuesInOrder} contains any duplicate values
   *     (according to {@link Object#equals})
   */
  // TODO(kevinb): provide replacement
  @GwtCompatible(serializable = true)
  public static <T> Ordering<T> explicit(List<T> valuesInOrder) {
    return new ExplicitOrdering<>(valuesInOrder);
  }

  /**

   * @param b the second {@code boolean} to compare
   * @return a positive number if only {@code a} is {@code true}, a negative number if only {@code
   *     b} is true, or zero if {@code a == b}
   */
  @InlineMe(replacement = "Boolean.compare(a, b)")
  public static int compare(boolean a, boolean b) {
    return Boolean.compare(a, b);
  }

  /**

   * @param b the second {@code boolean} to compare
   * @return a positive number if only {@code a} is {@code true}, a negative number if only {@code
   *     b} is true, or zero if {@code a == b}
   */
  @InlineMe(replacement = "Boolean.compare(a, b)")
  public static int compare(boolean a, boolean b) {
    return Boolean.compare(a, b);
  }

  /**

max_io         (int)       maximum IO requests allowed between objects to slow down heal operation. eg. 3
drive_workers  (int)       the number of workers per drive to heal a new disk replacement.
```