HEP Units and Constants

hepunits is a Python library that provides a comprehensive set of units and physical constants specifically tailored for the High Energy Physics (HEP) system of units. It simplifies working with quantities in HEP research by offering well-defined units like MeV and constants such as the speed of light. The library is actively maintained, with regular updates for Python version compatibility and minor feature enhancements, currently at version 2.4.4.