Mypy
Mypy is a static type checker for Python that enforces type hints to catch errors before runtime. It analyzes Python code to verify that variables, functions, and classes are used consistently with their declared types, helping developers write more robust and maintainable code. By integrating with Python's type hinting system (PEP 484), it provides early detection of type-related bugs without requiring code execution.
Developers should use Mypy when working on large or complex Python projects where type safety and code reliability are critical, such as in enterprise applications, data pipelines, or collaborative codebases. It is particularly valuable for teams adopting type hints to improve code readability, enable better IDE support (e.g., autocompletion), and reduce debugging time by catching errors during development rather than in production.