Appendix D. Migrating to Python 3 Starts with 2.6
Python 3: The Next Generation
Python is currently undergoing its most significant transformation since it was first released back in the winter of 1991. Python 3 is backward incompatible with all older versions, so porting will be a more significant issue than in the past.
Unlike other end-of-life efforts, however, Python 2.x will not disappear anytime soon. In fact, the remainder of the 2.x series will be developed in parallel with 3.x, thereby ensuring a smooth transition from the current to next generation. Python 2.6 is the first of these final 2.x releases.
Hybrid 2.6 as Transition Tool
Python 2.6 is a hybrid interpreter. That means it can run both 1.x and 2.x software as well ...
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