Congrats on the release guys -- eagerly looking forward to 1.1. final!! PS. Any chance of updating unicodedata to v5.1 for the final? On Sun, Apr 19, 2009 at 10:46 PM, Samuele Pedroni wrote:

Today we are releasing a beta of the upcoming PyPy 1.1 release. There are some Windows and OS X issues left that we would like to address between now and the final release but apart from this things should be working. We would appreciate feedback.

The PyPy development team.

========================================== PyPy 1.1: Compatibility & Consolidation ==========================================

Welcome to the PyPy 1.1 release - the first release after the end of EU funding. This release focuses on making PyPy's Python interpreter more compatible with CPython (currently CPython 2.5) and on making the interpreter more stable and bug-free.

PyPy's Getting Started lives at:

  http://codespeak.net/pypy/dist/pypy/doc/getting-started.html

Highlights of This Release ==========================

 - More of CPython's standard library extension modules are supported,    among them ctypes, sqlite3, csv, and many more. Most of these modules    extension are fully supported under Windows as well.

   http://codespeak.net/pypy/dist/pypy/doc/cpython_differences.html    http://morepypy.blogspot.com/2008/06/pypy-improvements.html

 - Through a large number of tweaks, performance has been improved by    10%-50% since the 1.0 release. The Python interpreter is now between    0.8-2x (and in some corner case 3-4x) of the speed of CPython. A large    part of these speed-ups come from our new generational garbage    collectors.

   http://codespeak.net/pypy/dist/pypy/doc/garbage_collection.html

 - Our Python interpreter now supports distutils as well as    easy_install for pure-Python modules.

 - We have tested PyPy with a number of third-party libraries. PyPy can    run now: Django, Pylons, BitTorrent, Twisted, SymPy, Pyglet, Nevow,    Pinax:

http://morepypy.blogspot.com/2008/08/pypy-runs-unmodified-django-10-beta.htm...    http://morepypy.blogspot.com/2008/07/pypys-python-runs-pinax-django.html    http://morepypy.blogspot.com/2008/06/running-nevow-on-top-of-pypy.html

 - A buildbot was set up to run the various tests that PyPy is using    nightly on Windows and Linux machines:

   http://codespeak.net:8099/

 - Sandboxing support: It is possible to translate the Python    interpreter in a special way so that the result is fully sandboxed.

   http://codespeak.net/pypy/dist/pypy/doc/sandbox.html    http://blog.sandbox.lt/en/WSGI%20and%20PyPy%20sandbox

Other Changes =============

 - The ``clr`` module was greatly improved. This module is used to    interface with .NET libraries when translating the Python    interpreter to the CLI.

   http://codespeak.net/pypy/dist/pypy/doc/clr-module.html    http://morepypy.blogspot.com/2008/01/pypynet-goes-windows-forms.html    http://morepypy.blogspot.com/2008/01/improve-net-integration.html

 - Stackless improvements: PyPy's ``stackless`` module is now more    complete. We added channel preferences which change details of the    scheduling semantics. In addition, the pickling of tasklets has been    improved to work in more cases.

 - Classic classes are enabled by default now. In addition, they have    been greatly optimized and debugged:

http://morepypy.blogspot.com/2007/12/faster-implementation-of-classic.html

 - PyPy's Python interpreter can be translated to Java bytecode now to    produce a pypy-jvm. At the moment there is no integration with    Java libraries yet, so this is not really useful.

 - We added cross-compilation machinery to our translation toolchain to    make it possible to cross-compile our Python interpreter to Nokia's    Maemo platform:

   http://codespeak.net/pypy/dist/pypy/doc/maemo.html

 - Some effort was spent to make the Python interpreter more    memory-efficient. This includes the implementation of a mark-compact    GC which uses less memory than other GCs during collection.    Additionally there were various optimizations that make Python    objects smaller, e.g. class instances are often only 50% of the size    of CPython.

http://morepypy.blogspot.com/2008/10/dsseldorf-sprint-report-days-1-3.html

 - The support for the trace hook in the Python interpreter was    improved to be able to trace the execution of builtin functions and    methods. With this, we implemented the ``_lsprof`` module, which is    the core of the ``cProfile`` module.

 - A number of rarely used features of PyPy were removed since the previous    release because they were unmaintained and/or buggy. Those are: The    LLVM and the JS backends, the aspect-oriented programming features,    the logic object space, the extension compiler and the first    incarnation of the JIT generator. The new JIT generator is in active    development, but not included in the release.

   http://codespeak.net/pipermail/pypy-dev/2009q2/005143.html    http://morepypy.blogspot.com/2009/03/good-news-everyone.html    http://morepypy.blogspot.com/2009/03/jit-bit-of-look-inside.html

What is PyPy? =============

Technically, PyPy is both a Python interpreter implementation and an advanced compiler, or more precisely a framework for implementing dynamic languages and generating virtual machines for them.

The framework allows for alternative frontends and for alternative backends, currently C, Java and .NET.  For our main target "C", we can can "mix in" different garbage collectors and threading models, including micro-threads aka "Stackless".  The inherent complexity that arises from this ambitious approach is mostly kept away from the Python interpreter implementation, our main frontend.

Socially, PyPy is a collaborative effort of many individuals working together in a distributed and sprint-driven way since 2003.  PyPy would not have gotten as far as it has without the coding, feedback and general support from numerous people.

Have fun,

   the PyPy release team, [in alphabetical order]

   Amaury Forgeot d'Arc, Anders Hammerquist, Antonio Cuni, Armin Rigo,    Carl Friedrich Bolz, Christian Tismer, Holger Krekel,    Maciek Fijalkowski, Samuele Pedroni

   and many others:    http://codespeak.net/pypy/dist/pypy/doc/contributor.html

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