Worked on enhancing the Apache Spark repository by improving the accuracy and clarity of Python API documentation, specifically targeting core functions. Focused on refining the docstrings for timestamp_add and parseJson to eliminate ambiguity and prevent user confusion, these updates were implemented exclusively through documentation changes without altering any functional code. Leveraged Python and technical writing skills to ensure that the documentation aligns with actual API behavior, supporting better onboarding and usage for Spark’s Python users. All changes were coordinated through code review to maintain API stability, resulting in improved developer guidance and more reliable reference material for the Spark community.