I thought that PyPy is restricted to only a subset of Python called "RPython" (s... | Hacker News

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		DrJokepu on Nov 19, 2009 \| parent \| context \| favorite \| on: PyPy vs Unladen Swallow vs CPython: benchmarks I thought that PyPy is restricted to only a subset of Python called "RPython" (stands for Restricted Python) so it's not fully compatible at all with CPython. Correct me if I'm wrong though as I'm far from being a Python guru.

alextp on Nov 19, 2009 | [–]

Only the pypy interpreter is written in RPython, code running in pypy is written in normal python. See http://codespeak.net/pypy/dist/pypy/doc/coding-guide.html for more info

gthank on Nov 19, 2009 | [–]

My understanding is that RPython is used to implement PyPy itself, but PyPy can interpret up to Python 2.5.

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