On Thu, Jun 28, 2018, 6:46 PM Nicolas Rolin <nicolas.rolin@tiime.fr> wrote:

The questions I should have asked In my original post was :
- Is splitting lists into sublists (by grouping elements) a high level enough construction to be worthy of a nice integration in the comprehension syntax ?

My intuition is no, it's not important enough to alter the syntax, despite being an important task.

- In which case, is there a way to find a simple syntax that is not too confusing ?

If you'd like to give it a shot, try to find something which is currently invalid syntax, but does not break compatibility. The latter criteria means no new keywords. The syntax should look nice as a single line with reasonably verbose variable names.

One issue is that Python code is mostly 1-dimensional, characters in a line, and you're trying to express something which is 2-dimensional, in a sense. There's only so much you can do without newlines and indentation.