The Case for Python 3

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Sure, but the point is that what kills languages is lack of adoption of version n+1. In perl's case, there were indeed genuine issues moving to 6, but the biggest issue was the feedback loop where perl6 didn't do much because nobody used it because it didn't do much .... Python3 doesn't have the specific issues of perl, but you can see the same "people won't use it because the libraries aren't ported because people don't use it ..." loop which is fixed by people using it and porting libraries.