Uninstallation
Uninstall the package with:
pip uninstall pgnhelper
The dependent libararies installed by pgnhelper are not uninstalled automatically. You have to uninstall it manually.
Uninstall other libraries:
pip uninstall chess
pip uninstall pandas
pip uninstall pytest
Note
Do not uninstall the other libraries if you still need it specially if you install pgnhelper globally or not using virtual environment.