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Python 3 is not "really that new" and Python 2.6-2.7 is not "old" in any way.

In fact we have: pre-2.4 (really old, preinstalled on old Redhats), 2.4-2.7, 3.x

Python 3 is curing problem with variable visibility (and if you do not write in "pure" functional way - you will never see this problem) and unicode strings. Other differences is not so "revolutionary".

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> (and if you do not write in "pure" functional way - you will never see this problem)

Could you explain this a little more, please?

I assume he's talking about the `nonlocal` keyword introduced in py3, which allows overwriting names defined in outer-but-not-global scopes.

Yes, eevee is right.

I'm talking about http://www.python.org/dev/peps/pep-3104

New keyword nonlocal and ability to have better closures.

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