[Python] Call another jupyter notebook, passing variables and receiving variables

Let say I have two jupyter notebook files called: main and sub

Here are my needs:

1. Call and run sub from main
2. Each notebook has its own variables space. For example, if x=1 in main, but x=2 in sub unless exchange info
3. I can pass certain variables to sub and retrieve certain variables from sub (not all) ← This is very important as I do not want variables to overlap and mess up the code

I have been trying all days with GPT and Copilot looking for an effective solution but:

1. Using %run -i% or IPython.get_ipython` will just share all variables between the two notebooks
2. Using nbclients → both GPT and Copilot keep giving wrong answers (i.e. I still cannot pass and receive variables from sub to main)

I know there is another solution is create a defined fucntion on .py file; however since my work at the moment is complex to convert from ipynb file to py file

If anyone have any suggestions, I would really appreciate (a sample code would be x2 appreciate)

Thank you!

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