Critical Error when converting python notebooks that contain - in the name

[mertzjames]

When trying to convert a notebook that has - in the name, I get the following error:

[NbConvertApp] CRITICAL | Bad config encountered during initialization:
[NbConvertApp] CRITICAL | Invalid argument: '-'

This was done using the following command:

jupyter nbconvert "0 - <notebook name>.ipynb" --to slides --post serve

[Carreau]

Zsh? tscsh ? Works locally in bash and fish, can you try single quotes ?

[mertzjames]

I'm using the Windows Command Prompt. Single quotes don't resolve the issue.

[Carreau]

Windows Command Prompt

Gnnn that will be painful to track. It might be a more global jupyter/traitlets issue.
Will try to find who could have a windows machine to debug...

[Carreau]

From gitter:

@sccolbert said:
It looks like it may be something with how the jupyter script is passing along args. I get the same error as the issue if I use jupyter nbconvert, but if I invoke the module directly, I get this: https://gist.github.com/sccolbert/4105b6e24e0ca42cf2cd
I went down the path of invoking directly, just so I could debug the thing, since jupyter starts a new background shell
(the error in the gist is appropriate, since my version of the nb file is an empty { })
but running the jupyter command directly does error: https://gist.github.com/sccolbert/82f6f4e629768dea1ef1
The problem is what the jupyter command is passing to os.execvp: https://github.com/jupyter/jupyter_core/blob/master/jupyter_core/command.py#L132
printing that on the command of interest, we get:
jupyter-nbconvert ['nbconvert', '0 - name.ipynb', '--to', 'slides', '--post', 'serve']
notice that the second arg is no longer quoted
Q.E.D.
Not sure what the best solution is, short of traversing the args and re-quoting the ones with spaces before exec'ing the subprocess

[minrk]

This is fixed by jupyter/jupyter_core#54