Great work, guys, although I was suprised at the error message when I
attempted to install over the 2.6 Alpha.
The message was: "A later version of Python 2.6 is already installed."
Although I realized that I needed to uninstall the Alpha version, the
message was surprising.
-----Original Message-----
From: users-boun...@lists.ironpython.com
[mailto:users-boun...@lists.ironpython.com] On Behalf Of Dino Viehland
Sent: Wednesday, May 20, 2009 3:46 PM
To: Discussion of IronPython
Subject: [IronPython] IronPython 2.6 Beta 1 Released
Hello Python Community,
We're pleased to announce the release of IronPython 2.6 Beta 1.
As you might imagine, this release is all about supporting new CPython
2.6 features such as the 'bytes' and 'bytearray' types (PEP 3112),
decorators for classes (PEP 3129), advanced string formatting (PEP
3101), etc and as such includes nearly all of the new Python 2.6
features. The small number of remaining features will be implemented
for Beta 2. The minimum .NET version required for this release is the
same as IronPython 2.0; namely .NET 2.0 Service Pack 1.
There've also been several new features added: ctypes,
sys._getframe, pyc for pre-compilation, and improved help. Ctypes
provides access to C-based APIs and provides a way for Python developers
to optimize performance or access libraries that would otherwise be
unavailable. sys._getframe is commonly used by Python programs to
introspect the call stack and can now be enabled with the -X:Frames and
-X:FullFrames command line options; for better compatibility with
programs that check for the presence of sys._getframe it is now not
available unless these options are provided. The pyc.py pre-compiler is
now shipped with IronPython and is available in the Tools\Scripts
directory. Finally the help of many builtin functions and types has
been improved by including IronPython.xml and IronPython.Modules.xml.
Another focus has been on improving startup time of large
applications. This release accomplishes that through the adaptive
compilation feature announced with 2.6 Alpha 1 and also includes many
other enhancements to reduce the amount of code generation required to
start applications. But only do these improvements help large
applications but they also significantly speed up basic hello worlds
startup time.
As usual we've also fixed a large number of bugs for this
release. We'd like to thank everyone who took the time to report them:
atifaziz, Anders M. Mikkelsen, cjacobs, Dan Eloff, davec, fwereade,
gjones, hhonisch, jdhardy, Kevin Chu, Kyle Howland-Rose, leppie, Mark
Rees, orestis, RuiDC, Seo Sanghyeon, soulfry, tatwright, ufechner, and
wilberforce.
There's also a few minor changes since IronPython 2.0.1 that are
worth calling out here:
* Binaries are ngen'd for both 32-bit and 64-bit
platforms on install by default
* IronPython.msi now offers a little more selection with
respect to what you'd like to install. For example, Silverlight
templates are optional
* The default installation location of IronPython.msi no
longer indicates whether the 2.6 release is an Alpha, Beta, or a patched
release. Future IronPython 2.6 installations will replace previous 2.6
releases which will be uninstalled automatically
* The -X:PreferComInteropAssembly flag has been removed.
All COM interop is now done through normal COM dispatch
You can download IronPython 2.6 Beta 1 at:
http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=25
126
<http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=2
5126>
The IronPython Team
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