Hi, I'm glad to announce the release of Modu v0.1.0, a new Python module dedicated to modular arithmetic. Through operator overloading, Modu provides a user experience similar to a "domain-specific language" (DSL), with sets / arithmetic operations using modular arithmetic. Modu is best used as an interactive calculator in Python terminal sessions (REPL) or in Jupyter Notebooks with instantaneous rendering as LaTeX formulae. The prime target domain is research and education in number theory. Modu is an open-source module distributed under the MIT license. - PyPI: https://pypi.org/project/modu/ - GitHub: https://github.com/piedenis/Modu If you want to give it a try, you may follow the link below for the online "Modutorial" (Jupyter Notebook): https://mybinder.org/v2/gh/piedenis/Modu/HEAD?urlpath=%2Fdoc%2Ftree%2Fsrc%2F modutorial.ipynb The present version v0.1.0 is BETA. Any feedback or enhancement ideas are welcome! Pierre Denis