That does look pretty nice for this example. I think the problem with it is that introduces too much new syntax that you have to memorize. The beauty of a for loop is that you can do _anything_ with it. And it all works with the same syntax.

  for item in array:
      item.foo = bar

  for item in array:
      item.foo = item.foo * 2

  for item in array:
      my_bar_func(item.foo)

If you special case certain uses of a for loop and add language syntax around it, of course you can make code terser. But it's nice to rely on a small set of very generally useful syntax.