用if-elif判断并打印结果：
if-elif
# -*- coding: utf-8 -*- height = 1.75 weight = 80.5
bmi = weight/(height**2)
if bmi < 18.5:
print('过轻')
elif 18.5 <= bmi <25:
print('正常')
elif 25<= bmi <28:
print('过重')
elif 28<= bmi <=32:
print('肥胖')
elif 32< bmi:
print('严重肥胖')
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阿斯巴甜味沐二
用
if-elif判断并打印结果：bmi = weight/(height**2)
if bmi < 18.5:
print('过轻')
elif 18.5 <= bmi <25:
print('正常')
elif 25<= bmi <28:
print('过重')
elif 28<= bmi <=32:
print('肥胖')
elif 32< bmi:
print('严重肥胖')