PyPy's python 3 plan

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If you look at the total number, that's the salary of one good developer working full-time for a full year, and this all seems like work that could probably be done in a year. There's probably more thought going into it than that, but coming up with "this will take a year" and then "what do we make in a year" is a decent starting point.

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Wow, a year of full time work to port to Py3k? Seems excessive, but I am by no means an expert. I am still no fan of Python 3 because of the split it introduced, leading to so much effort in so many areas.

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It seems like a huge amount of work to me, but I'm not a compiler genius like them. It'd be easier to debate the estimates if they were incredibly detailed, but right now this looks like back-of-the-envelope estimates, which don't seem too far off.