Python Programming Learning Circle

May 18, 2022 · Fundamentals

Useful but Uncommon Pandas Functions: to_period, cumsum, groupby, and Category dtype

This article demonstrates several lesser‑known but highly useful Pandas functions—including to_period for period conversion, cumsum with groupby for cumulative sums, and the memory‑efficient Category dtype—through a step‑by‑step example DataFrame with code snippets and output illustrations.