* Sie können Metadaten aus der hochgeladenen Datei auslesen.
* Es hat eine <a href="https://docs.python.org/3/glossary.html#term-file-like-object" class="external-link" target="_blank">dateiartige</a> `async`hrone Schnittstelle.

我们还改进了 Pydantic，让它也支持这些功能。

虽然上面的截图取自 <a href="https://code.visualstudio.com" class="external-link" target="_blank">Visual Studio Code</a>。

但 <a href="https://www.jetbrains.com/pycharm/" class="external-link" target="_blank">PyCharm</a> 和大多数 Python 编辑器也支持同样的功能：

<img src="/img/tutorial/body/image05.png">

/// tip | 提示

* <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">Внешняя ссылка</a>
* <a href="https://fastapi.tiangolo.com/css/styles.css" class="external-link" target="_blank">Ссылка на стиль</a>
* <a href="https://fastapi.tiangolo.com/js/logic.js" class="external-link" target="_blank">Ссылка на скрипт</a>

                            "content": {
                                "application/json": {
                                    "schema": {
                                        "$ref": "#/components/schemas/HTTPValidationError"
                                    }
                                }
                            },
                        },
                    },

    dynamicAnchor: Optional[str] = Field(default=None, alias="$dynamicAnchor")
    ref: Optional[str] = Field(default=None, alias="$ref")
    dynamicRef: Optional[str] = Field(default=None, alias="$dynamicRef")
    defs: Optional[dict[str, "SchemaOrBool"]] = Field(default=None, alias="$defs")
    comment: Optional[str] = Field(default=None, alias="$comment")

## Pydantic `Settings` { #pydantic-settings }

Afortunadamente, Pydantic proporciona una gran utilidad para manejar estas configuraciones provenientes de variables de entorno con <a href="https://docs.pydantic.dev/latest/concepts/pydantic_settings/" class="external-link" target="_blank">Pydantic: Settings management</a>.

### Instalar `pydantic-settings` { #install-pydantic-settings }

    GcFinalization.awaitDone(future);
    assertTrue(future.isDone());
    assertTrue(future.isCancelled());
  }

  public void testAwaitClear() {
    WeakReference<Object> ref = new WeakReference<>(new Object());
    GcFinalization.awaitClear(ref);
    assertThat(ref.get()).isNull();
  }

  public void testAwaitDone_finalizationPredicate() {
    WeakHashMap<Object, Object> map = new WeakHashMap<>();

      - master

concurrency:
  # On master/release, we don't want any jobs cancelled so the sha is used to name the group
  group: ${{ (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/release' ) && format('contributor-pr-base-{0}', github.sha) || format('contributor-pr-{0}', github.ref) }}
  cancel-in-progress: false

env:
  # Set the DEVELOCITY_ACCESS_KEY so that a Build Scan is generated

                                </la:info>
                                <la:errors/>
                            </div>
                            <a role="button" data-toggle="collapse" href="#listSearchForm" aria-expanded="false"
                               aria-controls="listSearchForm"><i class="fas fa-search" aria-hidden="true"></i></a>

Der Abschnitt mit:

{% raw %}

```jinja
<a href="{{ url_for('read_item', id=id) }}">
```

{% endraw %}

... generiert also einen Link zu derselben URL, welche von der *Pfadoperation-Funktion* `read_item(id=id)` gehandhabt werden würde.

Mit beispielsweise der ID `42` würde dies Folgendes ergeben:

```html
<a href="/items/42">
```