def flow_style(self, default=None):
        # type: (Optional[Any]) -> Any
        """if default (the flow_style) is None, the flow style tacked on to
        the object explicitly will be taken. If that is None as well the
        default flow style rules the format down the line, or the type
        of the constituent values (simple -> flow, map/list -> block)"""
        if self._flow_style is None:
            return default
        return self._flow_style
if default (the flow_style) is None, the flow style tacked on to
        the object explicitly will be taken. If that is None as well the
        default flow style rules the format down the line, or the type
        of the constituent values (simple -> flow, map/list -> block)
dynaconf/vendor/ruamel/yaml/comments.py