What would be the best strategy to debug a custom python extension?

[pokyah]

Hello,

I’m coming from R universe and I am new to Knime and Python. I want to build custom knime nodes (extensions) using the python API. I have successfully followed the tutorial from knime official docs.

Now I want to build my first custom extension and I am facing an issue while attempting to debug in VS code studio. While running import knime.extension as knext in the VS code interactive console I receive the same error as already posted here which seems expected.

So I wonder how can I efficiently debug and explore the objects of my code directly through vs code rather than each time restarting Knime and waiting for its console to log me some info.

Thanks for your help

[steffen_KNIME]

Hi @pokyah,

have a look at the first point of the following:

Several questions about KNIME extensions python development

Hi pirotex, Debugging in VS Code: To debug Python code in VS Code even though it is executed from KNIME, perform the follwing steps: in the python environment that you use for running your python code, install debugpy using pip install debugpy have visual studio code and the python extension installed use VS Code to open the folder of the plug-in you want to develop (e.g.: org.knime.python3.arrow.types.tests ) open the python file where you want to debug, by pressing Ctrl+P and start typi…

Please note that the content of the configure and execute methods is available without restarting the KNIME Analytics Platform if you have set debug_mode: true in the config.yml.

Does that already help?

Best regards
Steffen

[pokyah]

Hi @steffen_KNIME,

Thanks for your reply !

OK, I get an understanding of how all of this works now.

Thanks for your support