Author: Maciej Fijalkowski <[email protected]> Branch: Changeset: r63054:03d69244d043 Date: 2013-04-05 14:12 +0200 http://bitbucket.org/pypy/pypy/changeset/03d69244d043/
Log: write the release announcement diff --git a/pypy/doc/release-2.0.0-beta2.rst b/pypy/doc/release-2.0.0-beta2.rst new file mode 100644 --- /dev/null +++ b/pypy/doc/release-2.0.0-beta2.rst @@ -0,0 +1,84 @@ +=============== +PyPy 2.0 beta 2 +=============== + +We're pleased to announce the 2.0 beta 2 release of PyPy. This is a major +release of PyPy and we're getting very close to 2.0 final, however it includes +quite a few new features that require further testing. Please test and report +issues, so we can have a rock-solid 2.0 final. It also includes a performance +regression of about 5% compared to 2.0 beta 1 that we hope to fix before +2.0 final. The ARM support is not working yet and we're working hard to +make it happen before the 2.0 final. The new major features are: + +* JIT now supports stackless features, that is greenlets and stacklets. This + means that JIT can now optimize the code that switches the context. It enables + running `eventlet`_ and `gevent`_ on PyPy (although gevent requires some + special support that's not quite finished, read below). + +* This is the first PyPy release that includes `cffi`_ as a core library. + Version 0.6 comes included in the PyPy library. cffi has seen a lot of + adoption among library authors and we believe it's the best way to wrap + C libaries. You can see examples of cffi usage in `_curses.py`_ and + `_sqlite3.py`_ in the PyPy source code. + +You can download the PyPy 2.0 beta 2 release here: + + http://pypy.org/download.html + +What is PyPy? +============= + +PyPy is a very compliant Python interpreter, almost a drop-in replacement for +CPython 2.7.3. It's fast (`pypy 2.0 beta 2 and cpython 2.7.3`_ +performance comparison) due to its integrated tracing JIT compiler. + +This release supports x86 machines running Linux 32/64, Mac OS X 64 or +Windows 32. It also supports ARM machines running Linux, however this is +disabled for the beta 2 release. +Windows 64 work is still stalling, we would welcome a volunteer +to handle that. + +.. _`pypy 2.0 beta 2 and cpython 2.7.3`: http://bit.ly/USXqpP + +How to use PyPy? +================ + +We suggest using PyPy from a `virtualenv`_. Once you have a virtualenv +installed, you can follow instructions from `pypy documentation`_ on how +to proceed. This document also covers other `installation schemes`_. + +.. _`pypy documentation`: http://doc.pypy.org/en/latest/getting-started.html#installing-using-virtualenv +.. _`virtualenv`: http://www.virtualenv.org/en/latest/ +.. _`installation schemes`: http://doc.pypy.org/en/latest/getting-started.html#installing-pypy + +Highlights +========== + +* ``cffi`` is officially supported by PyPy. It comes included in the standard + library, just use ``import cffi`` + +* stackless support - `eventlet`_ just works and `gevent`_ requires `pypycore`_ + and `pypy-hacks`_ branch of gevent (which mostly disables cython-based + modules) + +* callbacks from C are now much faster. pyexpat is about 3x faster, cffi + callbacks around the same + +* ``__length_hint__`` is implemented (PEP 424) + +* a lot of numpy improvements + +Improvements since 1.9 +====================== + +* `JIT hooks`_ are now a powerful tool to introspect the JITting process that + PyPy performs + +* various performance improvements compared to 1.9 and 2.0 beta 1 + +* operations on ``long`` objects are now as fast as in CPython (from + roughly 2x slower) + +* we now have special strategies for ``dict``/``set``/``list`` which contain + unicode strings, which means that now such collections will be both faster + and more compact. _______________________________________________ pypy-commit mailing list [email protected] http://mail.python.org/mailman/listinfo/pypy-commit
