Loader

def __init__(self, filepath: Optional[str] = None, **kwargs: Any) -> None:
    '''Initialize single configuration file.'''
    self.filepath: Optional[str] = filepath
    self.filename: str = kwargs.pop('filename', 'config.toml')
    self.filetype: str = kwargs.pop(
        'filetype', self.get_filetype(self.filename)
    )

    self.writable: bool = bool(kwargs.pop('writable', False))
    self.autosave: bool = bool(
        kwargs.pop('autosave', True if self.writable else False)
    )

    if 'separator' in kwargs:
        self.separator: str = kwargs.pop('separator')
    super().__init__(**kwargs)

def dump(self, filepath: Optional[str] = None) -> None:
    '''Save settings to configuraiton.'''
    if self.writable:
        filepath = filepath or self.filepath
        if filepath:
            # Use discovered module to save configuration
            logging.info("Saving configuration: '{}'".format(filepath))
            Class = self.__get_class(
                self.get_filetype(filepath) or self.filetype
            )
            if Class:
                # TODO: refactor to use respective dict from chainmap
                c = Class()
                c.dump_config(self.data, filepath)
            else:
                raise exceptions.CompendiumDriverError(
                    "Skipping: No class found for: '{}'".format(filepath)
                )
        else:
            raise exceptions.CompendiumConfigFileError(
                'Error: no config file provided'
            )
    else:
        raise exceptions.CompendiumConfigFileError(
            'Error: file is not writable'
        )

def load(self, filepath: Optional[str] = None) -> None:
    '''Load settings from configuration file.'''
    filepath = filepath or self.filepath
    if filepath:
        # Use discovered module to load configuration.
        if os.path.exists(filepath):
            logging.info("Retrieving configuration: '{}'".format(filepath))
            Class = self.__get_class(
                self.get_filetype(filepath) or self.filetype
            )
            if Class:
                c = Class()
                self.update(c.load_config(filepath=filepath))
            else:
                raise exceptions.CompendiumDriverError(
                    "Error: No class found for: '{}'".format(filepath)
                )
        else:
            raise exceptions.CompendiumConfigFileError(
                "Skipping: No configuration found at: '{}'".format(
                    filepath
                )
            )
    else:
        raise exceptions.CompendiumConfigFileError(
            'Error: no config file provided'
        )

@staticmethod
def modules() -> Tuple[Any, ...]:
    '''Lookup modules inheriting FiletypesBase.'''
    return tuple([m for m in FiletypesBase.__subclasses__()])