Upon reviewing Chrome OS I find that it has Chrome (the browser) with some "windowing" along with a Linux kernel. I always thought (at least after my Operating Systems Theory classes in the mid 70s) that Linux is an OS. So, what the heck is Chrome OS (an OS within an OS?). Seems like everything is an OS after all. It does get sticky when androids come along too with a baby kernel (Linux anyone?).
In my opinion, the purest language for a machine is ultimately a mathematical language called Lambda Calculus. I believe, as machines we indeed are running Lambda programs. Python has such things in it. So I think Python is cool basely solely on everything I considered, so far.
When we get thru with all this stuff, I think we will have the Cloud OS (who knows what natural selection will do to its components). At that time, classical OS will just blend into history.