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PyPy is a Python interpreter and JIT compiler. PyPy focuses on speed, efficiency and 100% compatibility with the original CPython interpreter.
Details and motivation
PyPy was conceived as an implementation of Python written in Python, which enables Python developers to hack the implementation. This makes it easy to identify areas where it can be improved. The fact that PyPy is implemented in a high level language makes it also more flexible and easier to experiment with than CPython, thus allowing developers to experiment with multiple implementations of specific features.
PyPy aims to...