pypy是什么？

Wheat_southwest

pypy是不是类似gcc？？？？

timespace

是又一个Python语言实现，类似Jython/Iron Python/CPython。如果用C类比，gcc/clang/visual c++也是一种实现。

Welcome to PyPy
PyPy is a fast, compliant alternative implementation of the Python language (2.7.3 and 3.2.3). It has several advantages and distinct features:
Speed: thanks to its Just-in-Time compiler, Python programs often run faster on PyPy. (What is a JIT compiler?)
Memory usage: large, memory-hungry Python programs might end up taking less space than they do in CPython.
Compatibility: PyPy is highly compatible with existing python code. It supports cffi and can run popular python libraries like twisted and django.
Sandboxing: PyPy provides the ability to run untrusted code in a fully secure way.
Stackless: PyPy comes by default with support for stackless mode, providing micro-threads for massive concurrency.
As well as other features.

from http://pypy.org