Python for Entrepreneurs Transcripts
Chapter: Appendix: Python language concepts
Lecture: Concept: Polymorphism
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By leveraging inheritance, we can crate
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a wide range of types that model our world very well,
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in this example on the screen we have a wizard
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and the wizard knows how to battle a variety of creatures,
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we have small animals that are easier to defeat,
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we have standard creatures, we have dragons, we have wizards.
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All of these types are derived from the creature type.
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Now, the wizard class, you can see, can attack any of these creatures,
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and the reason the wizard class can attack them
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is it's built, it's programmed to understand what a creature is
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and attack it and any of the derived classes can be used interchangeably.
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So this means we can continue to evolve and generate
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new and interesting creature derived types
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and we don't have to change our wizard code to understand how to battle them.
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That's great, polymorphism is essential in any object-oriented language,
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and that's absolutely true in Python as well.
