Python Snippet in version 3.5.3

[shalinirs]

Hi,
I am not sure how to use the python snipped in version 3.5.3. I have used the ones in the older version very often. Not sure how to use it in the new version. Looking for demo to use.
This came up in my search but this python snippet is an old version.

- YouTube

Appreciate your help. A screenshot of a simple script with input and output variables will help. Thanks!

[MarcelW]

Hi shalinirs,

Actually, the new nodes don’t really differ from the ones shown in the video when it comes to using them. (Or am I missing something here?)
However, the way one has to set up the integration changed a bit. You can find a guide on how to do that for the new integration here.

Also, please don’t confuse our new Python integration with the Python Scripting Integration for KNIME which is a community contribution.

Do you have a specific thing in mind that you’d like to do using the new nodes, or have code that you’d want to port to the new nodes? Maybe I can help you getting started there.

Marcel

[shalinirs]

Hi @MarcelW

I figured it was to do with Python integration. I installed the python integration node and I no longer see ‘deprecated’ in the Python source node.

I also followed the blogpost to set up Python 2.7 (I use windows machine, using Python 2, knime version 3.5.3)
https://www.knime.com/blog/setting-up-the-knime-python-extension-revisited-for-python-30-and-20

When i try to run the Python Source nodes locally, I get the following error.
2018-12-28 10:31:03,532 : DEBUG : Thread-27 : PythonKernelTester : : : Error occurred during testing Python2 installation
2018-12-28 10:31:03,532 : DEBUG : Thread-27 : PythonKernelTester : : : Executed command: python C:\Users\ssubra\Downloads\knime_3.3.2.win32.win32.x86_64\knime_3.3.2\plugins\org.knime.python2_3.5.0.v201712011355\py\PythonKernelTester.py 2.7.0
PYTHONPATH=:
PATH=:
Raw test output:
Python version: 2.7.12
Library pandas is missing, required minimum version is 0.20.0

There is pandas library installed in the machine and it is 0.23.1

I am not sure how to resolve the above error.

[mlauber71]

My recommendation with Python and KNIME would be to use anaconda and strictly let anaconda do the version management of packages since this seems to be complicated

You might want to check these discussions and also the official KNIME and python guide. I had success with a mixture of the guide and the Anaconda Navigator but did not have the time to write a real guide.

---

Python and Anaconda versions

Python Extension not recognizing Anaconda environment in Knime 3.7

I do not have that much experience with using different Python environments with Anaconda and KNIME but what I saw was that it is best to let Anaconda handle the package management and mostly use Python packages that are compatible with the current version. conda install -c conda-forge keras Once I made the mistake of updating single Python packages with the blue links in the environment, big mistake. I received a lot of error messages. [image] Since then I would only use conda update …

Python Extension not recognizing Anaconda environment in Knime 3.7

One other thing. If I start installing Keras in my environment via with “conda install -c anaconda keras” I get an impressive list of what Anaconda wants to do on the system with Updates and Downgrades. So compatibility really is a thing here. Since I am not very experienced with package management my idea would be to let Anaconda handle the packages. And the Github page states that Keras is compatible with Python up to 3.6. So there is no guarantee it will work with 3.7 (I would assume i…

Python KNIME official installation

Python Extension not recognizing Anaconda environment in Knime 3.7

Sorry for all the trouble with the installation. We tried to address this problem also with some new documentation, which can be found here: https://docs.knime.com/2018-12/python_installation_guide/index.html This doc is written for KNIME 3.7. We’re happy to receive feedback in case it doesn’t work or is too complicated

https://docs.knime.com/2018-12/python_installation_guide/index.html

[shalinirs]

I reinstalled Anaconda 2 and followed the KNIME Python integration guide and it worked. Thanks for the support.