The PyPy project did not reimplement the entire Python standard library. The goal of PyPy is to provide a drop-in replacement for the canonical CPython interpreter. Right now, PyPy is (very) compatible with existing Python 2.7.3 code.[1]
1: http://pypy.org/compat.html - Standard library modules supported by PyPy. Note that large parts of python library are implemented in pure python, so they don't have to be listed there.
Comments
They are two different implementations of the standard library.
The PyPy project did not reimplement the entire Python standard library. The goal of PyPy is to provide a drop-in replacement for the canonical CPython interpreter. Right now, PyPy is (very) compatible with existing Python 2.7.3 code.[1]
1: http://pypy.org/compat.html - Standard library modules supported by PyPy. Note that large parts of python library are implemented in pure python, so they don't have to be listed there.
I didn't say the entire library was reimplemented, just that they are two different implementations.