Worked on the TheAlgorithms/Python repository to enhance the reliability of core algorithm implementations by focusing on robust input validation and comprehensive error handling. Addressed the edge case for the greatest common divisor function when both inputs are zero, ensuring mathematically sound behavior and clearer error messages. Improved the count_vowels function by enforcing TypeError for non-string inputs and aligning documentation for better clarity. Refined input validation and docstrings for the kth_lexicographic_permutation function, supporting maintainability. Leveraged Python for algorithm development, emphasizing disciplined error handling and automated pre-commit checks to maintain code quality and facilitate future contributions across the codebase.