python scripting: apache arrow backend and google-bigquery upload via python API (error)

[mlauber71]

@carstenhaubold maybe you could take a look at this entry. I also had problems that seem to be related to something going on with the index in a Pandas data frame and trying to bring that back to KNIME. Tried to ‘fix’ the index but to no avail:

UnicodeEncodeError: 'charmap' codec can't encode characters

OK I have added a part to the workflow where KNIME, Python and Jupyter would communicate with each other. ‘Variables’ can be exchanged via a file and also data can be transferred via Parquet files. It would be great though to be able to transfer ‘real’ variables between KNIME and Jupyter (like in this idea). [image] Unfortunately on my Mac the export thru the new Python integration produces a strange error about index when trying to access the results. Some nodes (like Group by) although woul…