def parse_string_set(source, info):
 source.expect('<')
 name = parse_name(source, True)
 source.expect('>')
 if ((name is None) or (name not in info.kwargs)):
  raise error('undefined named list', source.string, source.pos)
 return make_string_set(info, name)

def parse_string_set ( source , info ) : source . expect ( '<' ) name = parse_name ( source , True ) source . expect ( '>' ) if ( ( name is None ) or ( name not in info . kwargs ) ) : raise error ( 'undefined named list' , source . string , source . pos ) return make_string_set ( info , name )
parses a string set reference .