'Set the separator to use for the angle major tick labels.
Parameters
separator : The separator between numbers in sexagesimal
representation. Can be either a string or a tuple.'

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')
