Python Best Practices

The python-best-practices skill guides developers in writing type-safe, maintainable Python code by applying immutable data structures, discriminated unions, and domain-specific types to prevent invalid states at type-check time. It's for Python developers who want to follow functional programming patterns and enforce correctness through the type system rather than runtime checks. The skill solves the problem of catching logic errors early and avoiding mutation-related bugs by making illegal application states unrepresentable in the code.