Worked on modernizing error handling within the PyTorch/pytorch repository’s Dynamo module, focusing on improving robustness and maintainability. The main contribution involved replacing the deprecated IncorrectUsage exception with standardized RuntimeError usage, aligning error semantics with PyTorch conventions. This refactoring effort included updating Python unit tests to reflect the new error-handling approach and expanding test coverage to ensure reliability. By consolidating error paths and simplifying exception logic, the changes reduced debugging time for downstream users and clarified error reporting. The work demonstrated strong skills in Python, error handling, and testing, emphasizing careful attention to code quality and long-term maintainability.