The command 'jupyter lab' usually works fine in cmd. But today it isn't. I uninstall and reinstalled all jupyter components but no gain. Jupyter notebook seems to be working though.
C:\Users\Sarth.choudhary>jupyter lab Cannot open D:\Programs\Miniconda3\Scripts\jupyter-lab-script.py
I looked into the miniconda directory, jupyter-lab-script.py is indeed missing. I don't have this file anywhere in the miniconda directory.
Any help much appreciated.
The missing my-env/Scripts/jupyter-lab-script.py is just a very simple launch script for the jupyterlab.labapp.main function.
So just create my-env/Scripts/jupyter-lab-script.py containing the following code and the problem is solved (no need to create a whole new environment to copy from):
# -*- coding: utf-8 -*-
import re
import sys
from jupyterlab.labapp import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())
(NOTE: I copy-pasted from my-env/Scripts/jupyter-notebook-script.py and replaced the imported module by the correct jupyterlab.labapp. Didn't check if that is exactly the same as the original, but it works the same.)
I created another environment and installed jupyter lab in it. Ensured everything worked fine. Copied the missing file and pasted it in the base env folder. After making sure that I can launch Jupiter lab from base environment I removed the new environment. I think antivirus must have deleted that file so I created an exception in antivirus.