身体质量指数,是BMI(Body Mass Index)指数,简称体质指数,是国际上常用的衡量人体胖瘦程度以及是否健康的一个标准。
计算公式为:BMI=体重÷身高²。(体重单位:千克;身高单位:米。)
BMI由19世纪中期的比利时通才凯特勒最先提出。
height,weight = eval(input("请输入身高(米)和体重(公斤)[逗号隔开]:"))
bmi = weight / pow(height , 2)
print("BMI数值为:{:.2f}".format(bmi))
who , nat = " "," "
if bmi < 18.5:
who , nat = "偏瘦","偏瘦"
elif bmi >= 18.5 and bmi < 24:
who , nat = "正常","正常"
elif bmi >=24 and bmi <25:
who , nat = "正常","偏胖"
elif bmi >=25 and bmi <28:
who , nat = "偏胖","偏胖"
elif bmi >=28 and bmi <30:
who , nat = "偏胖","肥胖"
elif bmi >=30:
who , nat = "肥胖","肥胖"
print("BMI指标为: 国际{0},国内{1}".format(who,nat))
输出结果:
请输入身高(米)和体重(公斤)[逗号隔开]:1.72,70
BMI数值为:23.66
BMI指标为: 国际正常,国内正常