EasyPython ProgrammingHigh School (11–12)High School (9–10)UndergraduateGeneralPython Going Further › Inheritance and Special MethodsPython Going Further › Classes and ObjectsConceptual
Given these classes, say what each line shows.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Given these classes, say what each line shows.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Plan. An object is an instance of its own class and of every class above it. The relation goes one way: up the family tree.
isinstance(s, SportsCar):swas made fromSportsCar.True.isinstance(s, Car): aSportsCaris aCar.True.isinstance(s, Vehicle): and so aVehicle.True.isinstance(Car(), SportsCar): a plainCaris not a sports car.False.issubclass(SportsCar, Vehicle):SportsCaris built onCar, which is built onVehicle.True.issubclass(Vehicle, Car): the wrong way round.False.
Check. Run the program and compare.
Answer: True, True, True, False, True, False.
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