zlacker

It's going to be great for exploratory data science. You don't really need stellar, maintainable or extensible code for that, the early stage is largely about iteration speed.

>>csee+(OP)
Iteration speed also depends on code being well written and performance code, you need to get results faster to iterate faster.

Also if your don't fully understand your code( when generated or copied from SO) as not uncommon with junior developers and data science practitioners, then they struggle to make even small change for the next iteration, because they don't fully understand what their code is doing and how.

When your code is composable or modifiable easily then iterations become faster because you understand what you have written. One of the reasons why analysts prefer Excel if data size is within limits.