Mathics is a general-purpose computer algebra system (CAS).
However this repository contains just the Python modules for WL Built-in functions, variables, core primitives, e.g. Symbol, a parser to create Expressions, and an evaluator to execute them.
The home page for Mathics is https://mathics.org where you will find a list of screenshots and components making up the system.
If you want to install everything locally, see the Mathics omnibus repository.
See the read the docs guide for instructions on installing and running.
Please feel encouraged to contribute to Mathics! Create your own fork, make the desired changes, commit, and make a pull request.
Mathics is released under the GNU General Public License Version 3 (GPL3).