python 使用def定义bmi

    def BMI(height,weight) :
        bmi = weight / (height ** 2)
        if bmi <= 18.5 :
            A = '偏瘦'
        elif 18.5 < bmi <= 25 :
            A = '正常'
        elif 25 < bmi <= 30 :
            A = '偏胖'
        else :
            bmi >30
            A = '肥胖'
        print(f'您的bmi分类为:{A}')
        return BMI
    a = BMI(1.6,65)
    b = BMI(1.7,65)3