python-fonttools - A library to manipulate font files from Python.

Optional dependencies:

python3-reportlab – to drawing glyphs as PNG images

python3-sympy – for symbolic font statistics analysis


Note:
Install  pytz, Sphinx, sphinx-rtd-theme, snowballstemmer,
imagesize,msgpack-python, html5lib first and then go for
other dependencies.If you encounter an error about syntax
error in python then check if the slackbuild builds for  python2,
disable it and then try to install.