Each of the pages contain code examples for how to reproduce the results with the Python package hosted at github.com/ComPWA/polarimetry. However, to quickly get import the model in another package, it is possible to install the package from PyPI:
pip install lc2pkpi-polarimetry
Each of the models can then simply be imported as
import polarimetry
model = polarimetry.published_model()
New note to the main webpage: