Opaque Types in Python
3 days ago
- #typing
- #design-patterns
- #Python
- Opaque data types in Python using typing.NewType help manage complex configuration objects with minimal public API exposure.
- They allow private internal representation changes without breaking client code, preserving forward compatibility.
- Public constructor functions (e.g., shipFast) provide a stable interface while hiding implementation details.
- This pattern is useful for libraries where configuration state is complex and likely to evolve, like shipping options with multiple carriers and methods.