def __new__()

in src/huggingface_hub/hub_mixin.py [0:0]

• 31 lines of code
• 12 McCabe index (conditional complexity)

    def __new__(cls: Type[T], *args, **kwargs) -> T:
        """Create a new instance of the class and handle config.

        3 cases:
        - If `self._hub_mixin_config` is already set, do nothing.
        - If `config` is passed as a dataclass, set it as `self._hub_mixin_config`.
        - Otherwise, build `self._hub_mixin_config` from default values and passed values.
        """
        instance = super().__new__(cls)

        # If `config` is already set, return early
        if instance._hub_mixin_config is not None:
            return instance

        # Infer passed values
        passed_values = {
            **{
                key: value
                for key, value in zip(
                    # [1:] to skip `self` parameter
                    list(cls._hub_mixin_init_parameters)[1:],
                    args,
                )
            },
            **kwargs,
        }

        # If config passed as dataclass => set it and return early
        if is_dataclass(passed_values.get("config")):
            instance._hub_mixin_config = passed_values["config"]
            return instance

        # Otherwise, build config from default + passed values
        init_config = {
            # default values
            **cls._hub_mixin_jsonable_default_values,
            # passed values
            **{
                key: cls._encode_arg(value)  # Encode custom types as jsonable value
                for key, value in passed_values.items()
                if instance._is_jsonable(value)  # Only if jsonable or we have a custom encoder
            },
        }
        passed_config = init_config.pop("config", {})

        # Populate `init_config` with provided config
        if isinstance(passed_config, dict):
            init_config.update(passed_config)

        # Set `config` attribute and return
        if init_config != {}:
            instance._hub_mixin_config = init_config
        return instance