Thanks for looking into this in advance. Short one: When I run my code it gives the following error: ModuleNotFoundError: No module named 'python_calamine' --> what doesn't work: Pip install in the console --> this gives 'No module names pip'. To mitigate that problem python -m ensurepip --default-pip doesn't work. Several steps are tried but not the right one. Looking forward to your responses! Other packages as pandas and numpy work. Continue reading...