#bmi height,weight = eval(input("请输入身高(m) 体重(kg),以逗号隔开\n")) bmi = weight/pow(weight,2) print("BMI数值为:{:.2f}".format(bmi)) who,nat = "","" #who世界标准,nat国内标准 if bmi < 18.5 : who,nat = "偏瘦","偏瘦" elif 18.5<=bmi<24: who,nat = "正常","正常" elif 24<=bmi<25: who,nat = "正常","偏胖" elif 25<=bmi<28: who,nat = "偏胖","偏胖" elif 28<=bmi<30: who,nat = "偏胖","肥胖" else: who,nat = "肥胖","肥胖" print("BMI指标为:国际'{0}',国内'{1}'".format(who,nat))