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Moving from 2 to 3 was a long and difficult migration, so 3 to 4 will be similarly difficult

Seems a bit conclusory. Doesn't this imply the community is incapable of learning from experience?

I’ve been using Python since 1994 and my 2-to-3 migration plan was Go…

The account of time and money ppl put into building and maintaining systems built with scripting languages has never made sense to me.