Lesson 10 of 55
15 mins readPython Extending Interfaces
In Plain English
Interfaces can extend one or more base interfaces using the extends keyword, allowing you to compose complex shapes from reusable building blocks.
Core Rules to Remember
Composition: Inherits properties from parent interfaces without code duplication.
Multiple Inheritance: An interface can extend multiple base interfaces separated by commas.
Live Interactive Example
Hit Run Code to see it liveInheriting and Composing Interfaces
Python 3.12
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Output Console
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How it works: BlogPost inherits all fields from Identifiable and Auditable while adding title and slug.
Your Turn: Micro Challenge
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Micro Exercise
Extend Base Resource Interface
- Declare interface Resource with id: string and status: "active" | "inactive".
- Declare interface ComputeNode extending Resource with cpuCores: number and memoryGb: number.
- Create a worker object of type ComputeNode and print its id and memoryGb.
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Sandbox Output
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