The other day I needed to download some zip files, unpack them, parse the CSV files in them, and return the data as dicts. I did the very same thing a couple of years ago, and although the source is lost, I recall having a Python (2.4?) script of about two screens to do the download - so a hundred lines. When re-implementing the solution now that I know Python and the standard library better, I ended up with 12 lines written in just a few minutes - edited for blogging clarity it clocks in at 13 lines:
This is a writeup of a talk I did recently at Software Passion Summit in Gothenburg, Sweden. For more background info, see the post I did prior to the conference.
Writing a specification in a full-blown programming language like Python has upsides and downsides. On the downside, Python is not designed as a declarative language, so any attempt to make it declarative (apart from just listing native data types) will require some kind of customization and/or tooling to work.