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Avoid Magic Numbers
- Replace magic numbers with named constants using uppercase and underscores (PEP 8).
- Group constants in a constants.py file or use enums.
Typing.final
- Leverage typing.final for constants to enforce immutability with type checkers.
- This helps prevent accidental modification, unlike regular constants.
Sentinel and Null Object Patterns
- Use sentinel values for unset or special number cases instead of arbitrary integers.
- Consider the Null Object pattern for default no-op behavior.


