height = float(input('please input your height:'))weight = float(input('please input your weight:'))bmi = weight/(height*height)bmi_pj = '无结果'if bmi < 18.5:   bmi_pj = '过轻'elif bmi < 25:   bmi_pj = '正常'elif bmi < 28:   bmi_pj = '过重'elif bmi < 32:   bmi_pj = '肥胖'else:   bmi_pj = '严重肥胖'print('您的BMI指数为%.2f，体制评价为：%s，谢谢使用，告辞！' % (bmi, bmi_pj))