How to access notebook name in JupyterLab without ipylab?

[liquidcarbon]

ipylab is wonderful, just wanted to minimize dependencies :)

context: jupyter/notebook#7293

[jtpio]

@liquidcarbon you can try reading the JPY_SESSION_NAME environment variable with:

import os
os.environ.get('JPY_SESSION_NAME')

[liquidcarbon]

wonderful, thank you!