Notify users of files that could have caused the kernel to crash

[DonJayamanne]

Refs: #7538

• anyOS @rebornix
• anyOS @karrtikr

Complexity: 3

Authors: @DonJayamanne

Create Issue

---

Requirements

• Install prerelease jupyter extension into VS Code Insiders (desktop)
• Have a python environment that you can run jupyter from. (https://jupyter.org/install)
• Be familiar with jupyter notebooks
• Use Python 3.6 or later (please ensure you aren't using Python 2, use python --version to check the version)
• Ensure the following setting is added to your settings.json file (this is a hidden setting only used for testing)

"jupyter.disableZMQSupport": true,

Test Error message

1. Open a folder in VS Code
2. Add a file named email.py to the root directory of the workspace folder
3. Create an ipynb file in the root directory
4. Run a cell in the ipynb file with any code such as print(1234)
5. Wait for the kernel startup to fail (this can take around 30 seconds)

• Verify an error message is displayed indicating the fact that the presence of the file email.py may have caused the kernel to crash
• Delete the email.py file and verify the kernel now runs.

[rebornix]

It works great and the error message is intuitive 👍 . I only ran into a different exception on kernel restart.