Lesson 26 of 55
15 mins readPython Generic Interfaces and Type Aliases
In Plain English
Structure complex data pipelines by parameterizing interfaces and type aliases with generic arguments.
Core Rules to Remember
Parameterized Envelopes: ApiResponse<T> cleanly encapsulates metadata alongside arbitrary payload shapes.
Nested Generics: Generic types can be composed together like ApiResponse<PaginatedList<User>>.
Live Interactive Example
Hit Run Code to see it liveStandardizing API Envelopes with Generics
Python 3.12
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Output Console
Click "Run Code" to view the rendered output.
How it works: ApiResponse and PaginatedList compose seamlessly with UserRecord while maintaining full nested safety.
Your Turn: Micro Challenge
No pressure! Edit the starter code below and test your solution with instant feedback.
Micro Exercise
Create a Result Monad Type
- Define type Result<T, E> = { ok: true; value: T } | { ok: false; error: E }.
- Create a success result res1: Result<number, string> = { ok: true, value: 100 }.
- If res1.ok, print `Value: ${res1.value}`.
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Sandbox Output
Click "Run & Check" to test your solution.
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