How to run:
Go to https://swan.cern.ch
In Configure Environment option, select following:
Software Stack : 102
Platform : CentOS7 (gcc11)
Environment script : Leave it blank
Number of cores : 4
Memory : 16 GB
Spark cluster : None
Click on Start my Session. Once the session starts, it will take you to My Projects webpage.
Click on 
option that appears on the right side of the page.
Paste https://github.com/spandeyehep/indiacms_lectures.git in the input field, and click on Download.
Now, you should see a folder named indiacms_lectures inside which you will find the notebook.
You can start playing with the notebook.