It is thus very important to be able to convert temperature measured in Kelvin to Celsius, and what better way to do this than to use Python! Whereas Kelvin$$s zero point $(0$ K$)$ is defined by the absolute zero of temperature, Celsius$$ zero point $(0\backslash$deg C$)$ is defined by the freezing point of water. In Celsius, the absolute zero of temperature is $273\mathrm{.}15\backslash$deg C$,$ which is also the offset between the two scales.