Ah, yes. Thank you. So it works in CPython 2.7. But I'm curious, does it work in very old versions? I'm not saying that this is important, because language changes always are for new versions. However, Anders' claim that this not a language change seemed too broad to me. It may be that this change has very little cost, but it should not be dismissed.
It works in:
Python 1 Python 2 Python 3 PyPy 6 IronPython Jython micropython
Are there more I should try?