用描述符转换摄氏度与华氏度

class Sheshidu:
    def __init__(self,value=26.0):
        self.value=float(value)
    def __get__(self, instance, owner):
        return self.value
    def __set__(self, instance, value):
        self.value=float(value)

class Huashidu:
    def __get__(self, instance, owner):
        return instance.cel*1.8+32
    def __set__(self, instance, value):
        instance.cel=(float(value)-32)/1.8

class Temprature:
    cel=Sheshidu()
    hua=Huashidu()

调用

temp=Temprature()  
print(temp.cel)    
print(temp.hua)    
temp.cel=1000      
print(temp.hua)    

执行结果

D:\recent\code\venv\Scripts\python.exe D:/recent/code/venv/test.py
26.0
78.80000000000001
1832.0