[lysecret]

I love doing this in Python/Pycharm. I feel like there are three development modes:

1. Greenfield new development, on unknown parameters (complicated APIs, data frames). I like to use Jupyter Notebooks for that. I use them like a really powerful repl, nothing lives permanently in a Notebook.

2. Type Driven Domain Driven development. Either as a result of building a running MVP through 1, or on a domain you control / understand well. You start from frist principles and model out the flow in Types (usually DataClasses in Python).

3. Debugger driven "Adding Features/ Debugging". Obviously, we use the Debugger to debug, but it can also be very powerful to add a feature to a large system.