pypy3: pypy3 (implementation of Python 3 written in Python) pypy3: pypy3: PyPy is a very compliant implementation of the Python language. PyPy pypy3: has several advantages and distinctive features: speed (Just-in-Time pypy3: compiler), lower memory usage for large programs, sandboxing and pypy3: stackless mode. pypy3: pypy3: Homepage: http://pypy.org/ pypy3: pypy3: pypy3: