pdfcreate.py requires an existing 'template.pdf' file to be located in the same directory as the python script. snippets.py some snippets of code that may be handy for various activities in addition ...
The filter is written in Python with panflute which I recommend if you want to create your own pandoc filters. pandoc --filter pandoc-latex-barcode \ --template ./pandoc_latex_barcode.template.tex \ - ...