Python code modules for data analysis, simulation setup, and postprocessing in support of the mesoscale-to-microscale coupling (MMC) project. This is a common dependency for most of the notebooks developed over the course of the project, archived at https://github.com/a2e-mmc/assessment. MMC was funded by the U.S. Department of Energy's Wind Energy Technologies Office as a part of the Atmosphere to Electrons (A2e) initiative.