python 实现体质指数BMI计算

name = input('Name') 
height = input('Height(m):') 
weight = input('Weight(kg):') 
BIM = float(float(weight)/(float(height)**2)) 
if BMI <18.5: 
    print('过轻') 
elif BMI  <= 25: 
    print('正常') 
elif BMI <= 28: 
    print('过重') 
elif BMI <= 32: 
    print('肥胖') 
else: 
    print('严重肥胖')

tall = int(input("请输入你的身高(kg)："))
heigh =int( float(input("请输入你的体重(m)：")))
#注意变量 tall 和 heigh 的数据类型是字符串，若参与计算，则用eval().
#　BMI=体重(kg)/身高^2(m2)
BMI = heigh / pow(tall,2)
if BMI < 18.5 :
    print("偏瘦")
elif ((BMI >= 18.5 and BMI <= 25) or (BMI >= 18.5 and BMI <= 24)) :
    print("正常")
elif ((BMI > 25 and BMI <= 30) or (BMI >24 and BMI <= 28)) :
    print("偏胖")
elif ((BMI > 30) or (BMI >28)) :
    print("肥胖")

tall = eval((input("请输入你的身高(m)：")))
heigh =eval((input("请输入你的体重(kg)：")))
BMI = heigh / pow(tall,2)
if BMI < 18.5 :
    print("偏瘦")
elif ((BMI >= 18.5 and BMI <= 25) or (BMI >= 18.5 and BMI <= 24)) :
    print("正常")
elif ((BMI > 25 and BMI <= 30) or (BMI >24 and BMI <= 28)) :
    print("偏胖")
elif ((BMI > 30) or (BMI >28)) :
    print("肥胖")