[charlieyu1]

Good for developing ideas that you can add small code fragments gradually and see results immediately. And if it gets big enough, chances are that you have a good idea that makes it worth the time to refactor your notebook into production code.

[proamdev123]

I refactor my code into functions as I go.

Then I can easily put them into a Python file and import them from the notebook.

Easy peasy and very nice for iterative development.

[bjornasm]

Just started down this path, its such a nice workflow. I find that my notebook ends up with being a great overview of my codebase without going into the details of every function.