PyDaF stands for Python Data Flows. It is an experimental Python package that implements data-driven processing pipelines, which revolve around two major elements: data units, which encapsulate a type, a set of tags and actual data, and processors (fragments of code that get executed whenever the job's current data pool contains data units matching the processor's input specification).
Barcodes for Python is a library that can create EAN-13, Code-128A, Code128-B, Code128-C, and Gs1 barcodes. It also includes a CLI tool that can generate barcode image files and GTK+ and Qt GUI examples with printing support. The barcodes is produces have been verified using a cheap Deltaco (KB Wedge B519153) CCD handheld barcode scanner.