This is a basic implementation of (a subset of) the xplot .xpl format using matplotlib. It is specifically targeted at drawing TCPTrace time sequence graphs.
The native xplot is of course a lot faster than matplotlib, but this makes it possible to take full advantage of matplotlib's styling and exporting features.
Only tested on Python 3.5 and matplotlib 1.5. May eat your children; will definitely eat your RAM (a 600 second time sequence diagram eats ~800 MB of RAM).
License: GPLv3.
python xplot.py <filename>.xpl