Get current jupyter-lab notebook name [for Jupyter-lab version 2.1 and 3.0.1 and notebook version >6.0.3)

Problem

Hi all,

As my title suggested it, I would like to get access to the notebook name (in jupyter-lab) as a variable. So I could reuse it in the notebook itself (for example to name some figure files generated in the notebook).

I saw that a similar issue was opened years ago [see here]. However I didnt find a satisfactory answer.

I like the simplicity of the answer suggested by @bill:

import ipyparams

currentNotebook = ipyparams.notebook_name

However, it doesn't work for me. I got this warning the first time I execute the first cell:

import ipyparams
Javascript Error: Jupyter is not defined

currentNotebook = ipyparams.notebook_name

currentNotebook
   ''

Then if I rerun the cell again, I don't have the warning message anymore but the variable currentNotebook is still empty. (I run the cell sequentially, I didn't do a 'Run All Cells').

Configuration details

My Jupyter version is

jupyter notebook --version                                                                            
6.0.3]

jupyter-lab --version                                                                                 
2.1.1

I am using my notebook mostly for python code.

from Get current jupyter-lab notebook name [for Jupyter-lab version 2.1 and 3.0.1 and notebook version >6.0.3)