"k3": Item(aliased_name="baz", price=2.0, owner_ids=[1, 2, 3]),
    }


@app.get(
    "/items/valid-exclude-unset", response_model=Item, response_model_exclude_unset=True
)
def get_valid_exclude_unset():
    return Item(aliased_name="valid", price=1.0)


@app.get(
    "/items/coerce-exclude-unset",
    response_model=Item,
    response_model_exclude_unset=True,
)
def get_coerce_exclude_unset():

But this guide shows you, more or less, how they are intended to be used.

///

### Using Pydantic's `exclude_unset` parameter { #using-pydantics-exclude-unset-parameter }

If you want to receive partial updates, it's very useful to use the parameter `exclude_unset` in Pydantic's model's `.model_dump()`.

Like `item.model_dump(exclude_unset=True)`.

Aber dieser Leitfaden zeigt Ihnen mehr oder weniger, wie die beiden normalerweise verwendet werden.

///

### Pydantics `exclude_unset`-Parameter verwenden { #using-pydantics-exclude-unset-parameter }

Wenn Sie Teil-Aktualisierungen entgegennehmen, ist der `exclude_unset`-Parameter in der `.model_dump()`-Methode von Pydantic-Modellen sehr nützlich.

Wie in `item.model_dump(exclude_unset=True)`.

Pero esta guía te muestra, más o menos, cómo se pretende que se usen.

///

### Uso del parámetro `exclude_unset` de Pydantic { #using-pydantics-exclude-unset-parameter }

Si quieres recibir actualizaciones parciales, es muy útil usar el parámetro `exclude_unset` en el `.model_dump()` del modelo de Pydantic.

Como `item.model_dump(exclude_unset=True)`.

/// info | Información

      echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" does not exist." >&2
      exit 1
    fi
  fi
else
  JAVACMD="`\\unset -f command; \\command -v java`"

  if [ ! -x "$JAVACMD" ] ; then
    echo "The java(1) command does not exist in PATH nor is JAVA_HOME set, so Apache Maven cannot be started." >&2
    exit 1
  fi
fi

* `path` - The file path to the file to stream.
* `headers` - Any custom headers to include, as a dictionary.
* `media_type` - A string giving the media type. If unset, the filename or path will be used to infer a media type.
* `filename` - If set, this will be included in the response `Content-Disposition`.

### Use the `response_model_exclude_unset` parameter { #use-the-response-model-exclude-unset-parameter }

You can set the *path operation decorator* parameter `response_model_exclude_unset=True`:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}

### Use o parâmetro `response_model_exclude_unset` { #use-the-response-model-exclude-unset-parameter }

Você pode definir o parâmetro `response_model_exclude_unset=True` do *decorador de operação de rota*:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}

### Используйте параметр `response_model_exclude_unset` { #use-the-response-model-exclude-unset-parameter }

Вы можете установить у *декоратора операции пути* параметр `response_model_exclude_unset=True`:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}

### Den `response_model_exclude_unset`-Parameter verwenden { #use-the-response-model-exclude-unset-parameter }

Sie können den *Pfadoperation-Dekorator*-Parameter `response_model_exclude_unset=True` setzen:

{* ../../docs_src/response_model/tutorial004_py310.py hl[22] *}