仮想環境が有効であることを（上で説明したコマンドで）確認し、アップグレードを実行しましょう：

<div class="termy">

```console
$ python -m pip install --upgrade pip

---> 100%
```

</div>

/// tip | 豆知識

ときどき、pip をアップグレードしようとすると **`No module named pip`** エラーが表示されることがあります。

その場合は、以下のコマンドで pip をインストールしてアップグレードしてください:

<div class="termy">

```console
$ python -m ensurepip --upgrade

---> 100%
```

</div>

```console
$ fastapi dev main.py
```

Pero tendrías que recordar pasar el path correcto cada vez que llames al comando `fastapi`.

Adicionalmente, otras herramientas podrían no ser capaces de encontrarla, por ejemplo la [Extensión de VS Code](editor-support.md) o [FastAPI Cloud](https://fastapicloud.com), así que se recomienda usar el `entrypoint` en `pyproject.toml`.

## `fastapi dev` { #fastapi-dev }

0080..009F    ; disallowed                             # 1.1  <control-0080>..<control-009F>
00A0          ; disallowed_STD3_mapped ; 0020          # 1.1  NO-BREAK SPACE
00A1..00A7    ; valid                  ;      ; NV8    # 1.1  INVERTED EXCLAMATION MARK..SECTION SIGN
00A8          ; disallowed_STD3_mapped ; 0020 0308     # 1.1  DIAERESIS

      this.delegate = checkNotNull(delegate);
      this.mutex = (mutex == null) ? this : mutex;
    }

    Object delegate() {
      return delegate;
    }

    // No equals and hashCode; see ForwardingObject for details.

    @Override
    public String toString() {
      synchronized (mutex) {
        return delegate.toString();
      }
    }

      Comparator<? super K> comparator,
      boolean sameComparator,
      Iterable<? extends Entry<? extends K, ? extends V>> entries) {
    // "adding" type params to an array of a raw type should be safe as
    // long as no one can ever cast that same array instance back to a
    // raw type.
    @SuppressWarnings("unchecked")
    Entry<K, V>[] entryArray = (Entry[]) Iterables.toArray(entries, EMPTY_ENTRY_ARRAY);

### async가 아닌 경로 처리 함수 { #non-async-path-operation-functions }

`async`가 없는 일반 `def` 함수에서도 동일하게 `yield`를 사용할 수 있습니다.

{* ../../docs_src/stream_data/tutorial001_py310.py ln[26:29] hl[27] *}

### 타입 애너테이션 생략하기 { #no-annotation }

바이너리 데이터를 스트리밍할 때는 반환 타입 애너테이션을 굳이 선언할 필요가 없습니다.

FastAPI는 데이터를 Pydantic으로 JSON으로 변환하거나 어떤 방식으로든 직렬화하지 않으므로, 이 경우 타입 애너테이션은 편집기나 도구를 위한 용도일 뿐이며 FastAPI에서는 사용되지 않습니다.

        ]
    }


def test_users_token_monica_with_no_jessica(client: TestClient):
    response = client.get("/users?token=monica")
    assert response.status_code == 400
    assert response.json() == {"detail": "No Jessica token provided"}


def test_items_token_jessica(client: TestClient):
    response = client.get(
        "/items?token=jessica", headers={"X-Token": "fake-super-secret-token"}
    )

_init() {\n    const usingDefTab = ($(SELECTOR_TAB_CONTENT).children().length > 2)\n\n    this._setupListeners()\n    this._fixHeight(true)\n\n    if (usingDefTab) {\n      const $el = $(`${SELECTOR_TAB_PANE}`).first()\n      // eslint-disable-next-line no-console\n      console.log($el)\n      const uniqueName = $el.attr('id').replace('panel-', '')\n      const navId = `#tab-${uniqueName}`\n\n      this.switchTab(navId, true)\n    }\n  }\n\n  _initFrameElement() {\n    if (window.frameElement && thi...

    public static final String ERRORS_could_not_open_on_system = "{errors.could_not_open_on_system}";

    /** The key of the message: No more results can be displayed. */
    public static final String ERRORS_result_size_exceeded = "{errors.result_size_exceeded}";

    /** The key of the message: The file {0} does not exist. */

  }

  /**
   * https://tools.ietf.org/html/rfc3986#section-5.4.1
   */
  @Test
  fun rfc3886NormalExamples() {
    val url = parse("http://a/b/c/d;p?q")
    // No 'g:' scheme in HttpUrl.
    assertThat(url.resolve("g:h")).isNull()
    assertThat(url.resolve("g")).isEqualTo(parse("http://a/b/c/g"))
    assertThat(url.resolve("./g")).isEqualTo(parse("http://a/b/c/g"))