Python基础（条件判断）

# age = 103
# if age < 90:
#     print('%s小于90' %age)
# elif age > 90 and age < 95:
#     print('%s大于90小于95' %age)
# else:
#     print('%s大于100' %age)

# num = input('请输入一个数字：')
# formatNum = int(num)
# if formatNum > 100:
#     print('你输入的数字大于100')
# else:
#     print('你输入的数字小于100')
# print('你输入的数字是%s' %num)

height = float(input('请输入身高：'))
weight = float(input('请输入体重：'))
num = '%.1f' %(weight/(height*height))
bmi = float(num)
print(bmi)
if bmi < 18.5:
    print('低于18.5：过轻')
elif bmi < 25 and bmi > 18.5:
    print('18.5-25：正常')
elif bmi < 28 and bmi > 25:
    print('25-28：过重')
elif bmi < 32 and bmi > 28:
    print('28-32：肥胖')
elif bmi > 32:
    print('高于32：严重肥胖')