Inheritance

Main idea

Child class reuses and extends parent behavior.

Tip

Use only for true is-a relation.

Watch out

Wrong inheritance tree design.

Read this next

Inheritance is used in many real programs. Right now you are in Object-Oriented Programming.

Core idea:
Child class reuses and extends parent behavior.

Read the example code on this page. Then write your own short version.

Tip:
Use only for true is-a relation.

Watch out for:
Wrong inheritance tree design.

Your challenge:
Animal base class and Dog child class.

Use the editor in the challenge lab. When your output looks correct and there is no error, press the green button to unlock the next topic.

Example code

Copy this example if it helps. Change it so it matches Inheritance.

# Topic: Inheritance
def main():
    sample = "edit me"
    # TODO: apply Inheritance concept here
    result = sample
    print("Result:", result)

if __name__ == "__main__":
    main()

Challenge

Animal base class and Dog child class.

Before you can finish: your output should include at least 16 characters; at least 1 non-empty line(s); no crash traceback—fix errors until the program runs cleanly.

Use Run. Read the output. Change your code until the task is done.

Starter reference

# Challenge starter for Inheritance
def solve():
    # Write your solution here
    pass

print("Update solve() and run")

Your code

The first Run may load Python in your browser (one-time). Later runs are faster.

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