This is a python package for processing and visualizing SP2 data. It is based off of the IGOR code developed by Droplet Measurement Technologies. PySP2 currently supports processing all raw SP2 data (.sp2b, .hk, .ini) files into mass and number size distributions. It can plot individual waveforms as well as particle size distributions. Its file format is based off of the standard provided by the Atmospheric Community Toolkit which is based around xarray. PySP2 is currently used by the Department of Energy Atmospheric Radiation Measurment (ARM) Facility in order to process SP2 observations during field deployments such as TRACER, SAIL, and COURAGE.