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 and does not require any external libraries. SymPy has several optional dependencies which enhance its functionality or make it faster. Here are those available at SlackBuilds.org: numpy, scipy, matplotlib, ipython and pyglet.