python-结构控制

# 空气质量指数

'''
PM = eval(input("请输入PM2.5数值: "))
if 0<= PM < 35:
    print("空气优质，快去户外运动!")
if 35 <= PM <75:
    print("空气良好，适度户外活动！")
if 75 <= PM:
    print("空气污染，请小心！")
'''


'''
PM = eval(input("请输入PM2.5数值: "))
if PM >= 75:
    print("空气污染，请小心！")
else:
    print("空气没有污染，可以展开户外运动！")

'''


# 身体质量指数

'''
height, weight = eval(input("请输入身高(米)和体重(公斤)[逗号隔开]: "))
bmi = weight / pow(height, 2)
print("BMI 数值为：{:.2f}".format(bmi))
wto, dom = "", ""
if bmi < 18.5: # WTO 标准
    wto = "偏瘦"
elif bmi < 25: # 18.5 <= bmi < 25
    wto = "正常"
elif bmi < 30: # 25 <= bmi < 30
    wto = "偏胖"
else:
    wto = "肥胖"
if bmi < 18.5: # 我国卫生部标准
    dom = "偏瘦"
elif bmi < 24: # 18.5 <= bmi < 24
    dom = "正常"
elif bmi < 28: # 24 <= bmi < 28
    dom = "偏胖"
else:
    dom = "肥胖"
print("BMI 指标为:国际'{0}', 国内'{1}'".format(wto, dom))

'''


'''
height, weight = eval(input("请输入身高(米)和体重\(公斤)[逗号隔开]: "))
bmi = weight / pow(height, 2)
print("BMI 数值为：{:.2f}".format(bmi))
wto, dom = "", ""
if bmi < 18.5:
    wto, dom = "偏瘦", "偏瘦"
elif 18.5 <= bmi < 24:
    wto, dom = "正常", "正常"
elif 24 <= bmi < 25:
    wto, dom = "正常", "偏胖"
elif 25 <= bmi < 28:
    wto, dom = "偏胖", "偏胖"
elif 28 <= bmi < 30:
    wto, dom = "偏胖", "肥胖"
else:
    wto, dom = "肥胖", "肥胖"
print("BMI 指标为:国际'{0}', 国内'{1}'".format(wto, dom))

'''