Method _validate_named

dash/dash_table/Format.py:119–121

(self, value, named_values)

            raise ValueError("expected value to be non-negative", str(value))

    def _validate_named(self, value, named_values):
        if value not in named_values:
            raise TypeError("expected value to be one of", str(list(named_values)))

    def _validate_string(self, value):
        if not isinstance(value, (str, "".__class__)):