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The original proposal from GvR for dual support in libraries was to release separate source, where the Py3 version would be the generated output of running sour

The original proposal from GvR for dual support in libraries was to release separate source, where the Py3 version would be the generated output of running source transformation tools like 2to3 against the Py2 source: https://www.python.org/dev/peps/pep-3000/#compatibility-and-transition https://www.python.org/dev/peps/pep-3000/#compatibility-and-... Not hard to see why this didn't get a lot of traction.

sitkack 7y ago
No they don’t. Step functions usually signify the change in evolutionary epochs. Meaning any time the change is too great, it literally means starting over. Python barely survived 2to3, it should serve as a warning to every other system that thinks it can do a stop the world upgrade.