Can extra_arguments be made configurable in ExecutePreprocessor?

[tdpetrou]

In the ExecutePreprocesor class, the extra_arguments traitlet is not configurable (i.e. we cannot do c.ExecutePreprocessor.extra_arguments = [commands here]) because it is not defined with .tag(config=True).

I'm guessing there is a reason for this.

I see that I can set it with the constructor ExecutePreprocessor(extra_arguments=[commands here]), but it seems like one of the only traitlets that's not configurable.

[MSeal]

This is probably an oversight afaik. However this code now lives in https://github.com/jupyter/nbclient/blob/master/nbclient/client.py#L136 if you wanted to make a PR there.

[tdpetrou]

Thanks, I'll create an issue/PR over there.