Polarpy processes and analyzes data from the POLAR gamma-ray polarimeter, which records spectral and polarization measurements in ROOT format. The package includes utilities to convert raw POLAR data into HDF5 format suitable for use in analysis frameworks and workflows. It supports integration with the 3ML (ascl:2506.018) modeling environment for downstream analysis of spectral and polarization information. Polarpy’s conversion tools streamline handling of POLAR instrument outputs and facilitate preparation of data for scientific modeling. The repository includes example scripts and code to assist users in preparing and analyzing polarization-related datasets.