PEP 484 (Python Enhancement Proposal 484)

PEP 484 introduces "type hints" to Python, allowing programmers to specify expected data types for variables, function parameters, and return values. This enhances code readability, maintainability, and enables static analysis tools to check for type-related errors before runtime. While Python remains dynamically typed, type hints serve as optional guides, helping developers understand how code should be used without enforcing strict typing. Overall, PEP 484 aims to make Python code clearer and more robust, especially in large projects or collaborative environments.