Cannot switch environments after notebook is open

[steve28]

Bug: Switching environments after a notebook has been opened does not switch the environment for the notebook.

Use case: I open vscode to edit an ipython notebook that relies on a certain environment. I try to execute the notebook, and then realize I am in the wrong environment. So I select the new environment. At this point, there doesn't appear to be any way to get that notebook to use the new environment without completely quitting VSCode

Steps to cause the bug to occur

1. Open an iPython notebook
2. Execute notebook
3. Switch conda environments with Interpreter picker
4. Execute notebook again
5. Notice it's still using old environment

Actual & Expected behavior

Actual Behavior: The notebook executes in the environment active when VSCode starts no matter what you do with switching interpreters

Expected Behavior: Switching environments should re-start notebook kernel in new environment.

Your Jupyter and/or Python environment

Please provide as much info as you readily know

• Jupyter server running: Local
• Extension version: 2019.10.41019
• VS Code version: 1.39
• Setting python.jediEnabled: true
• Python and/or Anaconda version: anaconda 2019.07 py37_0
• OS: Mac 10.15
• Virtual environment: conda

Developer Tools Console Output

[rchiodo]

Yeah we should be killing the jupyter server when the selection is changed.

[greazer]

This is being addressed by issue being spec'd in microsoft/vscode-python#3123