import re regstr = """ ^(?!.*(服装|纺织|食品|农业|医疗))(海洋.{0,6}(防护|防腐|防污|防附着|防渗透)|防护.{0,6}海洋|防腐.{0,6}(材料|涂料)|防污.{0,6}(材料|涂层)|船舶.{0,3}(防腐|防污)|海工.{0,3}(材料|防护)) """ # re.search(regstr, phrase)