PyX is a Python package for the creation of PostScript, PDF, and SVG files. It combines an abstraction of the PostScript drawing model with a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives.
A common technique to debug in Python is to add this line at a place which you want to observe: When you run the Python code and the interpreter hits this line, it drops you into a Python debugger prompt. You can inspect local variables and step through code from here. An irritating problem here…