pypy: pypy (implementation of Python written in Python) pypy: pypy: PyPy is a very compliant implementation of the Python language. PyPy pypy: has several advantages and distinctive features: speed (Just-in-Time pypy: compiler), lower memory usage for large programs, sandboxing and pypy: stackless mode. pypy: pypy: Homepage: http://pypy.org/ pypy: pypy: pypy: