In December 2025, Joseph Napoli contributed to the python/typeshed repository by implementing a feature that extends the flexibility of boxplot whisker length configuration. He modified the boxplot function’s 'whis' parameter to accept either a float or a tuple of floats, allowing users to define whisker lengths with greater precision. This change, developed using Python and leveraging type hinting, enhances data visualization workflows by supporting more nuanced statistical representations. The work was delivered as a focused, repository-level update and addressed a specific issue, demonstrating a targeted approach to improving type definitions for downstream users who rely on accurate data visualization tools.