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This skill provides a comprehensive framework for implementing robust static type checking in Python 3.13 projects. It guides developers through the transition from legacy typing to modern syntax (such as the pipe operator for unions and the type statement for aliases), ensures zero-error mypy strict mode compliance, and establishes standardized patterns for complex structures using Protocols, Generics, and TypedDicts. It is an essential utility for maintaining high code quality and catching logic errors at the development stage rather than at runtime.
