PyPy

PyPy is an implementation of Python. Other implementations of Python.

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.

External Links

• PyPy official site
• Browse source of other Virtual Machines implemented on PyPy's framework