Python-scripts (*.py) can be used from BrainVoyager 20.
For more information about Python in BrainVoyager, please see Rainer's BV blog and the BrainVoyager Users Guide
For Python in BrainVoyager documentation, please see "Python" > "Python Developer Guide" in the BrainVoyager menu
They are an addition to the scripts that are available in the folder /Documents/BrainVoyager/Extensions/PythonScripts/ after installation of BrainVoyager.
An unofficial list with Python commands in BrainVoyager can be found in this PDF
For the Brain Innovation GitHub page, please see https://github.com/BrainInnovation/ for example for code to create physiological noise regressors.
For information about the Python language and some useful libraries, see: Python website and the SciPy website. Also, the JavaScript language can still be used in BrainVoyager, and on Mac, AppleScript can be used.