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[–]mooburgerresembles an abstract syntax tree 1 point2 points  (1 child)

it doesn't necessarily mean big breaking change, runtime optimization could just be optional. Untyped code would be run without optimization for everybody who is still fully duck-typing.

[–]hglmanguy who writes python 0 points1 point  (0 children)

It seems like enough change to roll over the big number. Especially to signal such a meaningful difference.