Examples of openpiv-python are separated from the main package
Install from @alexlib repo:
pip install git+https://github.com/alexlib/openpiv-python --upgrade
List of notebooks: https://github.com/OpenPIV/openpiv-python-examples/tree/main/notebooks
https://nbviewer.org/github/OpenPIV/openpiv-python-examples/tree/main/notebooks/