Which embedded Python interpreter used in KNIME

Node Development
1

Hi Team,

Could anyone let us know which embedded python interpreter is used in KNIME Java code to call the python functions directly from Java code?

Thanks
Ravikiran

2

Hi @ravikiran,
KNIME is not using an embedded interpreter, it uses a Java ProcessBuilder to call to native python. You can take a look at the implementation here: https://github.com/knime/knime-python/

We rely on a user installed python environment, see here how it is set up: https://docs.knime.com/2019-06/python_installation_guide/index.html

best,
Gabriel

1 Like
3

Hi Gabriel,

Thanks for the information.

BTW, I see the below plugins/jars. May I know what are these for (mainly the jep-2.4.1.jar)?
knime_4.0.1/plugins/org.knime.ext.jep_4.0.0.v201905311239/knime-jep.jar
knime_4.0.1/plugins/org.knime.ext.jep_4.0.0.v201905311239/lib/jep-2.4.1.jar

Thanks
Ravikiran

4

This project is using this libray
https://github.com/scijava/jep

That was wrong, it is using an internal library based on:
http://www.singularsys.com/jep/index.html

It is shipped with the target platform as the plugin org.knime.ext.jep

best,
Gabriel

1 Like