```
/files/{file_path:path}
```

In diesem Fall ist der Name des Parameters `file_path`. Der letzte Teil, `:path`, sagt aus, dass der Parameter ein *Pfad* sein soll.

Sie verwenden das also wie folgt:

```Python hl_lines="6"
{!../../../docs_src/path_params/tutorial004.py!}
```

!!! tip "Tipp"

=== "Python 3.10+"

    ```Python hl_lines="1  15"
    {!> ../../../docs_src/path_operation_configuration/tutorial001_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="3  17"
    {!> ../../../docs_src/path_operation_configuration/tutorial001_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="3  17"
    {!> ../../../docs_src/path_operation_configuration/tutorial001.py!}
    ```

=== "Python 3.10+"

    ```Python hl_lines="1  15"
    {!> ../../../docs_src/path_operation_configuration/tutorial001_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="3  17"
    {!> ../../../docs_src/path_operation_configuration/tutorial001_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="3  17"
    {!> ../../../docs_src/path_operation_configuration/tutorial001.py!}
    ```

So wie Sie mit `Query` für Query-Parameter zusätzliche Validierungen und Metadaten hinzufügen können, können Sie das mittels `Path` auch für Pfad-Parameter tun.

## `Path` importieren

Importieren Sie zuerst `Path` von `fastapi`, und importieren Sie `Annotated`.

=== "Python 3.10+"

    ```Python hl_lines="1  3"
    {!> ../../../docs_src/path_params_numeric_validations/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

### Usando el nombre de la *función de la operación de path* en el operationId

Si quieres usar tus nombres de funciones de API como `operationId`s, puedes iterar sobre todos ellos y sobrescribir `operation_id` de cada *operación de path* usando su `APIRoute.name`.

Deberías hacerlo después de adicionar todas tus *operaciones de path*.

```Python hl_lines="2 12 13 14 15 16 17 18 19 20 21 24"
{!../../../docs_src/path_operation_advanced_configuration/tutorial002.py!}

pkg log, method (*Logger) Writer() io.Writer
pkg math/bits, func Add(uint, uint, uint) (uint, uint)
pkg math/bits, func Add32(uint32, uint32, uint32) (uint32, uint32)
pkg math/bits, func Add64(uint64, uint64, uint64) (uint64, uint64)
pkg math/bits, func Div(uint, uint, uint) (uint, uint)
pkg math/bits, func Div32(uint32, uint32, uint32) (uint32, uint32)
pkg math/bits, func Div64(uint64, uint64, uint64) (uint64, uint64)

      }

      return result
    } finally {
      peekedHeader = null
      limit = pushedLimit
      constructed = pushedConstructed
      if (name != null) path.removeAt(path.size - 1)
    }
  }

  /**
   * Execute [block] with a new namespace for type hints. Type hints from the enclosing type are no
   * longer usable by the current type's members.
   */
  fun <T> withTypeHint(block: () -> T): T {

To add tags to your *path operations*, and group them in the docs UI, read the docs for [Tutorial - Path Operation Configurations - Tags](../tutorial/path-operation-configuration.md#tags){.internal-link target=_blank}.

## Documentation Summary and Description - OpenAPI

## Mounting a **FastAPI** application

"Mounting" means adding a completely "independent" application in a specific path, that then takes care of handling everything under that path, with the _path operations_ declared in that sub-application.

### Top-level application

First, create the main, top-level, **FastAPI** application, and its *path operations*:

```Python hl_lines="3  6-8"
{!../../../docs_src/sub_applications/tutorial001.py!}
```

Falls Sie Hypercorn verwenden, das hat auch die Option `--root-path`.

!!! note "Technische Details"
    Die ASGI-Spezifikation definiert einen `root_path` für diesen Anwendungsfall.

    Und die Kommandozeilenoption `--root-path` stellt diesen `root_path` bereit.

### Überprüfen des aktuellen `root_path`