The UDUNITS package supports units of physical quantities.
https://anaconda.org/nesii/udunits2/badges/version.svg
https://anaconda.org/nesii/udunits2/badges/latest_release_date.svg
https://anaconda.org/nesii/udunits2/badges/latest_release_relative_date.svg
https://anaconda.org/nesii/udunits2/badges/platforms.svg
https://anaconda.org/nesii/udunits2/badges/license.svg
https://anaconda.org/nesii/udunits2/badges/downloads.svg