fmt.Println("[preflight] This might take a minute or two, depending on the speed of your internet connection")
		fmt.Println("[preflight] You can also perform this action beforehand using 'kubeadm config images pull'")
		if err := preflight.RunPullImagesCheck(utilsexec.New(), initCfg, j.IgnorePreflightErrors()); err != nil {
			return err
		}
	}
	return nil
}

## Bodies of arbitrary `dict`s

You can also declare a body as a `dict` with keys of some type and values of some other type.

This way, you don't have to know beforehand what the valid field/attribute names are (as would be the case with Pydantic models).

This would be useful if you want to receive keys that you don't already know.

---

This is useful if you don't know the valid field/attribute names (that would be needed for a Pydantic model) beforehand.

In this case, you can use `typing.Dict` (or just `dict` in Python 3.9 and above):

=== "Python 3.9+"

    ```Python hl_lines="6"
    {!> ../../../docs_src/extra_models/tutorial005_py39.py!}
    ```