# SymPy > SymPy is a Python library for symbolic mathematics. It aims to become a full-featured computer algebra system (CAS) while keeping the code as simple as possible in order to be comprehensible and easily extensible. SymPy is written entirely in Python. SymPy is a [Python](https://wiki.g15e.com/pages/Python.txt) library for symbolic [mathematics](https://wiki.g15e.com/pages/Mathematics.txt). It aims to become a full-featured computer algebra system (CAS) while keeping the code as simple as possible in order to be comprehensible and easily extensible. SymPy is written entirely in Python. https://www.sympy.org