MediumPython ProgrammingHigh School (11–12)High School (9–10)UndergraduateGeneralPython Going Further › Inheritance and Special MethodsPython Going Further › Classes and ObjectsConceptualPython-Coded
A Dog object has no name. Find the reason and fix the class.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A Dog object has no name. Find the reason and fix the class.
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. The child wrote its own __init__. That replaces the parent's, so self.name is never set. The line rex.name gives AttributeError: 'Dog' object has no attribute 'name'.
The fix. Let Dog.__init__ take the name as well, and call the parent's set-up with super().
Check. It shows Rex ['sit'].
Answer: Call super().__init__(name) in the child, and pass the name in.
Discussion (0)
Log in to join the discussion.
Loading…