I prefer the parentheses-based Lisp notation to any notation I've seen that removes them. Perhaps I haven't seen a notation that is simple enough for my taste.
The big benefit that parentheses have is that they make the correct parsing of the text obvious, especially when combined with decent automatic indentation^1. If I never have to read something like `[x * 2 if x % 2 == 0 else x for x in a_list]` or `[x * (2 - x % 2) for x in a_list]` again^2, I'll be thrilled.
So my question is: unless you can make the correct parsing obvious, why skip the parens?
