Seriously though, incase the original poster isn't joking, both those are commonly used syntaxes, and some professionals advocate for one, and some professionals advocate for another, and neither is necessarily superior than the other.
Seriously? I don't think most people know that you can omit the parenthesis, they probably think it'd be a syntax error.
EDIT: it becomes handy with type casting though. Instead of (int)(x) you could write int(x). Looks nifty, and syntax highlight will still make sure it's obvious it's a casting. Probably still better avoided, though.