python入门小程序：华氏度和摄氏度换算

#温度换算.py
while True:
wendu = input(“请输入带有符号的温度值：”)
if wendu[-1] in [‘F’,‘f’]:
C = (eval(wendu[0:-1]) - 32)/1.8
print(“转换后的温度是{:.2f}·C”.format( C))
elif wendu[-1] in [‘C’, ‘c’]:
F = 1.8*eval(wendu[0:-1]) + 32
print(“装换后的温度是{:.2f}·F”.format(F))
else:
print(“输入错误，请输入带有符号的温度值：”)

运行结果如下图：