You're probably right. Sadly, the vast majority of the python upgrades probably did not require breaking compatibility. Or if they did, they weren't worth it. I

You're probably right. Sadly, the vast majority of the python upgrades probably did not require breaking compatibility. Or if they did, they weren't worth it. I understand that iterators are arguably better than lists and print should arguably be a real function, but those advantages are far too small to justify breaking compatibility.