温度转换

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# 摄氏温标（°C）和华氏温标（°F）之间的换算关系为：
# F=C×1.8+32
# C=(F-32)÷1.8
wendu = input('输入带单位的温度:')
if wendu[-1] in ['F', 'f']:
    C = (eval(wendu[0:-1]) - 32) / 1.8
    print(f'你输入{C:.2f}C')
elif wendu[-1] in ['C', 'c']:
    F = eval(wendu[0:-1]) * 1.8 + 32
    print(f'你输入{F:.2f}F')
else:
    print('你的格式有误')