#!/usr/local/bin/python3

class Person:
    def __init__(self, weight, height):
        self.weight = weight
        self.height = height
    def bmi(self):
        return BMI.calc(self)

class BMI:
    @staticmethod
    def calc(person):
        h = person.height / 100
        return person.weight / (h**2)
    @staticmethod
    def decide(person):
        bmi = person.bmi()
        print('---')
        print('BMI =', bmi)
        if bmi < 18.5:
            print('痩せ型')
        elif bmi < 25.0:
            print('標準')
        elif bmi < 30.0:
            print('軽度肥満')
        elif bmi < 35.0:
            print('重症肥満')
        else:
            print('超肥満')

person = Person(65, 170)
print(person)
bmi = person.bmi()
print(bmi)
BMI.decide(person)