Are the python commands expected to work as is from the documentation?  I am totally new to python and when I try this from Windows, it does not work.  I definitely have python 3 installed.

python3 -m pip3 install requests pytz python.dateutil

https://support.gainsight.com/PX/API_for_Developers/01About/Gainsight_PX_Data_Loader

I also seem to have pip installed:

C:UsersxxAppDataLocalProgramsPythonPython310Scripts>pip --version
pip 22.2.1 from C:UsersxxAppDataLocalProgramsPythonPython310libsite-packagespip (python 3.10)