def parse_fuzzy_item(source, constraints):
 saved_pos = source.pos
 try:
  parse_cost_constraint(source, constraints)
 except ParseError:
  source.pos = saved_pos
  parse_cost_equation(source, constraints)

def parse_fuzzy_item ( source , constraints ) : saved_pos = source . pos try : parse_cost_constraint ( source , constraints ) except ParseError : source . pos = saved_pos parse_cost_equation ( source , constraints )
parses a fuzzy setting item .