Our height doesn't stay the same throughout our lives: we grow tall while we're kids and grow smaller in the later stages of our lives. Below you can see a class Person with such instance attributes as name and height (in centimeters).
Your task is to add methods for updating the height of a person: __iadd__() and __isub__() for adding and subtracting centimeters from the value of height.
Tip: Don't forget that all magic methods for augmented assignment have something very peculiar about them!
