@enmerk4r @Wilfried What happens if you set the locale manually before importing pandas
import locale
locale.setlocale(locale.LC_ALL, 'en_US')
import pandas
Does this resolve the error in importing pandas?
The issue seems to also be related to Issue 43115: locale.getlocale fails if locale is set - Python tracker
I’m still investigating to see how does Rhino environment affect the locale