Hey colleages, currently, I have this issue with Python Script Lab. It gives me a error “not initialize lz4” but I have this in extension folder. Thanks in advance!!! Have a good code weekennd [image]

Hi @MoLa_Data , could it be that you upgraded your KNIME version from 4.4 to 4.5 and then installed the Python Scripting (Labs) extension? In that case, could you check whether the “KNIME Columnar Table Backend” is installed by opening up KNIME and go to File → Install KNIME Extensions and search for “Columnar”. If you tick/untick the “hide items that are already installed” checkbox on the lower right you should find the Columnar Table Backend feature. This is the one containing the LZ4 libraries. We are investigating why the Columnar Table Backend feature is not always installed with the Python Script (Labs) extension. Please let us know whether that helps.

Error Python Script Lab

KNIME Extensions

mlauber71 January 8, 2022, 8:09pm 4

@MoLa_Data the point would be to use the environment propagation from the example. If you just use the node it would just reproduce your current environment.

To be honest I found the concept somewhat confusing myself in the beginning.