def get_error_hint(self, ctx):
        """Get a stringified version of the param for use in error messages to
        indicate which param caused the error.
        """
        hint_list = self.opts or [self.human_readable_name]
        return " / ".join(repr(x) for x in hint_list)
Get a stringified version of the param for use in error messages to
        indicate which param caused the error.
        
dynaconf/vendor/click/core.py