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Code Challenge

Extend a base message's text through super without copying its implementation into the subclass.

Understand the idea

Write your own solution before opening the worked answer. Predict the output from the supplied values, then compare the actual result. Check both an ordinary case and the boundary described below; a passing example is more useful when you can explain why it passes.

Where to try it

Open this example with Try in playground. The code loads as editable text and does not run until you select Run. The first run downloads Python. Each run starts fresh; temporary files created by a script are not files on your PC.

Your task

Extend a base message's text through super without copying its implementation into the subclass.

Show the worked solution
Python
Try in playground

class Message:
    def text(self):
        return "Welcome"

class PythonMessage(Message):
    def text(self):
        return super().text() + " to Python"

print(PythonMessage().text())

Check the result

The text is Welcome to Python.

Test one more case

Use the subclass through a function that only expects the base text interface.