Validation Issue when opening .ipynb file in other .ipynb editors (Jupyter Notebook)

Environment data

• VS Code version: 1.43.2
• Extension version (available under the Extensions sidebar): 2020.3.69010
• OS and version: Windows 10 Home 10.0.18363 Build 18363
• Python version (& distribution if applicable, e.g. Anaconda): 3.7.6 anaconda
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): conda
• Relevant/affected Python packages and their versions: XXX
• Relevant/affected Python-related VS Code extensions and their versions: XXX
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info microsoft/vscode-python#3977): Disabled
• Value of the python.languageServer setting: Microsoft

Expected behaviour

The file is expetected to open normally in Jupyter Notebook

Actual behaviour

Upon opening the .ipynb file this validation error occurs.

Notebook validation failed: Additional properties are not allowed (‘outputs’, ‘execution_count’ were unexpected): { “cell_type”: “markdown”, “metadata”: {}, “source”: “# Comp9417 - Homework 2\n## Question 2”, “execution_count”: null, “outputs”: [] }

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. Use Vscode to open a .ipynb file.
2. Work as per usual.
3. Open file that was being edited in vscode in jupyter notebook in google chrome.

Produces this validation error.

Notebook validation failed: Additional properties are not allowed (‘outputs’, ‘execution_count’ were unexpected): { “cell_type”: “markdown”, “metadata”: {}, “source”: “# Comp9417 - Homework 2\n## Question 2”, “execution_count”: null, “outputs”: [] }

Logs

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

XXX

Output from Console under the Developer Tools panel (toggle Developer Tools on under Help; turn on source maps to make any tracebacks be useful by running Enable source map support for extension debugging)

XXX

[shac12]

Hi @DavidKutu

I will try and replicate the scenario as best as i can but it can be inconsistent. Im not really sure how to do this step " to get to a markdown cell with outputs and execution time?". I’m not sure that, that is the issue. It seems that when I start a ipynb file in vscode and then try and open it in jupyter notebook, jupyter notebook complains that this is not a valid file. I can send you a test file if you would like ? I believe that there is some issue with the actual save functionality of vscode but I can only speculate.

How would I get into the insiders build ?

cheers for following up on this.

[IanMatthewHuff]

Validated. I’m not able to create the markdown cells with execution_count or output anymore.