A compliant implementation of the Python language written in a restricted subset of Python which can be run in another Python interpreter or translated to C and compiled for fast execution.

PyPy's Mission Statement is to provide:

  • a common translation and support framework for producing implementations of dynamic languages, emphasising a clean separation between language specification and implementation aspects.
  • a compliant, flexible and fast implementation of the Python Language using the above framework to enable new advanced features without having to encode low level details into it.http://codespeak.net/pypy/dist/pypy/doc/architecture.html#mission-statement
  • [http://codespeak.net/pypy/dist/pypy/doc/news.html PyPy official site]
  • [https://codespeak.net/viewvc/pypy/lang/ Browse source of other Virtual Machines implemented on PyPy's framework]

References