I was attempting to assist on an open-source project when I was stopped short by this (names have been changed):class DataPoint: measurement1 = None measurement2 = None measurement3 = None DataPoint was later used like this:d = DataPoint() d.measurement1 = 100 d.measurement2 = 200 d.measurement3 = 300 Why give names and initialization values to class attributes, then when you make an object, immediately create and initialize instance variables with the same names as the class attributes?