Server Imports in Notebook 7

Notebook 7 is now based on Jupyter Server, which lets users run multiple Jupyter frontends (e.g. Notebook, JupyterLab, NBClassic, etc.) on the same server.

Prior to Notebook 7, the Classic Notebook server included the server modules in the notebook package. This means it was possible to import the server modules from the notebook package, for example:

from notebook.auth import passwd
passwd("foo")

Or:

from notebook import notebookapp
notebookapp.list_running_servers()

In Notebook 7, these server modules are now exposed by the jupyter_server package. The code snippets above should be updated to:

from jupyter_server.auth import passwd
passwd("foo")

And:

from jupyter_server import serverapp
serverapp.list_running_servers()

These are just examples, so you may have to adjust your use of notebook imports based on the specific server modules you were using.