Calendrical Tools is a Python package for computing different calendars using the code from Reingold & Dershowitz, Calendrical Computations.
Candybar is a tool for computing calendars and displaying then in a rectangular format. The goal is to produce output similar to Appendix C of Reingold & Dershowitz.
pip install git+https://github.com/rn123/Calendrical-Tools#egg=Calendrical-Tools
from calendrical_tools import candybar
cal = candybar.TextCandyBar(2020)
cal.prcandybar()
Includes a version of pycalcal