Pin down python packages #9
Description
It would be helpful to generate the requirements.txt using pip freeze, which would include the package numbers. Currently, I am trying to use 382e5282722af262d91a66661151c4ca204ae9d7 (because main is broken), and I'm seeing the following issue below. I think this issue is caused because of an incompatible version of nbformat, but I am not sure.
nbformat.validator.NotebookValidationError: None is not valid under any of the given schemas
Failed validating 'oneOf' in notebook['properties']['text']:
On instance['text']:
None