def set_separator(self, separator):
        if not (self._formatter_locator.__class__ == AngleFormatterLocator):
            raise TypeError("Separator can only be specified for angle coordinates")
        if isinstance(separator, six.string_types) or isinstance(separator, tuple):
            self._formatter_locator.sep = separator
        else:
            raise TypeError("separator should be a string or a tuple")
Set the separator to use for the angle major tick labels.
dataset/ETHPy150Open glue-viz/glue/glue/external/wcsaxes/coordinate_helpers.py/CoordinateHelper.set_separator