Function update_mapping_from_spec

src/diffusers/utils/testing_utils.py:1387–1397

(device_fn_dict: dict[str, Callable], attribute_name: str)

if is_torch_available():
    # Update device function dict mapping
    def update_mapping_from_spec(device_fn_dict: dict[str, Callable], attribute_name: str):
        try:
            # Try to import the function directly
            spec_fn = getattr(device_spec_module, attribute_name)
            device_fn_dict[torch_device] = spec_fn
        except AttributeError as e:
            # If the function doesn't exist, and there is no default, throw an error
            if "default" not in device_fn_dict:
                raise AttributeError(
                    f"`{attribute_name}` not found in '{device_spec_path}' and no default fallback function found."
                ) from e

    if "DIFFUSERS_TEST_DEVICE_SPEC" in os.environ:
        device_spec_path = os.environ["DIFFUSERS_TEST_DEVICE_SPEC"]