Emanuele Giaquinta developed a feature for the pola-rs/pyo3 repository that enabled timezone-aware datetime information retrieval on PyPy, aligning PyO3’s interface with PyPy’s datetime API. By exposing PyDateTime_DATE_GET_TZINFO and PyDateTime_TIME_GET_TZINFO for PyPy 3.10 and above, Emanuele improved foreign function interface (FFI) handling for timezone-aware datetimes. This work required a deep understanding of the Python C API, PyPy internals, and Rust, ensuring that downstream users could reliably access tzinfo data in PyPy environments. The contribution enhanced cross-implementation compatibility and provided clearer guidance for developers integrating Python and Rust through FFI, reflecting focused and technically nuanced engineering.