Vscode-jupyter: (Type hint) linting and formatting does not work in Jupyter Notebook

[danlutz]

Bug: Notebook Editor, Interactive Window, Editor cells

Steps to cause the bug to occur

1. Enable mypy in VS Code workspace settings
2. Set black as linter (install as dev-dependency with pipenv)
3. Create new blank jupyter notebook + create function with type hints
4. Call function with a mismatching type in arguments
5. Save unformatted notebook

Actual behavior

• Linter mypy does not indicate an error
• Black does not format unformatted cell in notebook

Expected behavior

• Linter (mypy) displays a type error
• Formatter (black) does not format unformatted cell in notebook

Could not find a similair issue, hope I did not overlook an existing one. Love the python extension btw!

Your Jupyter and/or Python environment

_Please provide as much info as you readily know_

• Jupyter server running: Local
• Extension version: v2020.7.94776
• VS Code version: 1.47.2
• Setting python.jediEnabled: false
• Setting python.languageServer: Microsoft
• Python and/or Anaconda version: 3.8.4 (installed from Homebrew)
• OS: Mac OS 10.15.5 (19F101)
• Virtual environment: pipenv

Developer Tools Console Output

Microsoft Data Science for VS Code Engineering Team: @rchiodo, @IanMatthewHuff, @DavidKutu, @DonJayamanne, @greazer, @joyceerhl

[joyceerhl]

Hi @danlutz! As mentioned in microsoft/vscode-python#12149, right now we don't have support for formatting of cells because of how our editor is implemented. We are releasing a new notebook editing experience which will include support for formatting notebook cells and linting. You can track progress here: https://github.com/microsoft/vscode-python/issues/12189.

We're also releasing a preview of the new notebook experience in the Insiders edition of VS Code this week. We look forward to your feedback, and thanks for your support :)