This is the MeteoSwiss Pyrad. Pyrad is an open source Python module for weather radar data processing. The module controls the data flow. The inputs and outputs are specified using config files. Most of the core data processing is performed using the MeteoSwiss version of Py-ART, originally developed in the framework of the Atmospheric Radiation Measurement (ARM) Climate Research Facility for working with data from a number of precipitation and cloud radars. The MeteoSwiss version of Py-ART contains enhanced and experimental functionality. MeteoSwiss regularly contributes back to the ARM-DOE Py-ART.