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Pythonistas wince when they hear the truism about Python being fast to develop in but slow to actually run. The newest iteration of an alternative Python interpreter aims to prove that wrong.

PyPy, an implementation of Python 2, has long been one of the projects designed to give Python a speed boost via its JIT (just in time) compiler. Under PyPy, many Python programs run an average of six times faster than with the stock Python interpreter.

"Snow White," per PyPy 2.4's code name, offers internal fixes and speed improvements over previous editions. For one, it uses Python's 2.7.8 standard library, where the previous version of PyPy only supported up to version 2.7.5. The Windows version of PyPy has also been cleaned up to be statically linked to many common libraries to address Windows users' complaints about missing DLLs.

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