My first instinct was to just write two functions and call it done, which would've been a mistake.
Start by clarifying requirements and constraints, then propose a flexible interface using abstract base classes or protocols, and discuss implementation details for recv_data and send_data. Emphasize extensibility and testability, and outline a comprehensive test strategy covering unit, integration, and edge cases.
Pro tip: Demonstrate Amazon's Leadership Principles by proactively discussing trade-offs (e.g., simplicity vs. flexibility) and how your design scales, and mention writing tests first to drive the interface design.
Ask questions to understand data types, performance needs, error handling, and integration points. This ensures the design meets actual needs and shows you think before coding.
Define an abstract base class or protocol with recv_data and send_data methods, specifying parameters and return types. Consider using generics or type hints for flexibility.
Provide a sample implementation (e.g., for a specific camera) that adheres to the interface, handling edge cases like timeouts and partial data. Discuss how to extend for other cameras.
Describe unit tests for the interface and implementation, using mocks for dependencies. Cover normal operation, error conditions, and performance aspects.
Explain design decisions, such as why you chose an abstract class over a simple function, and how the design supports future changes (e.g., new camera types).
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.