height=1.75
weight=75
username='小明'
bmi=weight/height**2
print(f'{username}您好,您的体质指数为{round(bmi,1)}')
if bmi>=18.5:
print(f'{username}您好,您的指数偏瘦')
elif bmi>=24.9:
print(f'{username}您好,您的指数正常')
elif bmi>=29.9:
print(f'{username}您好,您的指数超重')
else:
print(f'{username}您好,您的指数肥胖')
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