A weather station sends readings in Celsius. Each Reading should work out a couple of facts the moment it is made.
Fill in __init__ so that each reading has these attributes:
| attribute | value |
|---|---|
sensor | the sensor name, as given |
celsius | the temperature, as given |
fahrenheit | celsius * 9 / 5 + 32, rounded to 1 decimal place |
is_freezing | True when celsius is 0 or below, otherwise False |