celsius.py

class Celsius:
    __multiplier = 1.8

    def __init__(self, temperature = 0):
        self._temperature = temperature

    def to_fahrenheit(self):
        return (self._temperature * 1.8) + 32

    def get_temperature(self):
        print("Getting value")
        return self._temperature

    def set_temperature(self, value):
        print("Setting value")
        return None

    temperature = property(get_temperature,set_temperature)


t1 = Celsius(23)
print(t1.to_fahrenheit())
t1.temperature = 45
t1.__multiplier = 10
print(t1.to_fahrenheit())