Mac Osx Finder does not search "ipynb" files for content

System:
Mac Osx, Big Sur, v11.1

Issue/Feedback:
I have bunch of python files in .py and .ipynb extensions in a folder and want to search for files for a code snippet.
Ex: Search for all files having word “pandas”

Open Finder window and on the top right input the word pandas and Finder will display only the .py files. The .ipynb never show up even though they have the word.

Workaround:
User can use Mac Terminal + navigate to the folder and use command [grep -r -l “pandas” .] (minus bracket).
Terminal grep will show all files i.e py + ipynb.

I have checked my Mac indexing/Spotlight and it does not have any filter or exclusions.

So, what is making Mac Finder not query & show the ipynb files??

Thanks