[IronPython] Announcing IronPython 2.7 Alpha 1
fuzzyman at voidspace.org.uk
Sat Jul 17 12:20:27 CEST 2010
On 16/07/2010 21:38, Dave Fugate wrote:
> Hello Python Community,
> We're pleased to announce the Alpha release of IronPython 2.7 which
> can be downloaded at
> http://ironpython.codeplex.com/releases/view/42434. This is a major
> new version of IronPython with a number of significant updates.
> Because this is an Alpha release it is not yet feature complete nor
> fully compatible with CPython 2.7. Changes thus far include:
> · Updates the language to be compatible with CPython 2.7
> · Adds integrated Visual Studio support (IronPython Tools for Visual
> · Extends CPython 2.7's documentation with useful information
> pertaining to IronPython
> · Adds the mmap and signal modules
> · Includes a number of performance updates and bug fixes
> · Switches the license to Apache License, Version 2.0
> · Requires .NET 4.0 and Silverlight 4.0
> Python 2.7 includes a number of features backported from the Python
> 3.0 series. This release implements the new builtin _io module,
> includes dictionary and set comprehensions, set literals, supports
> multiple context managers in the with statement, and adds several new
> functions to the itertools methods, and auto indexing for the new
> string formatting. There are also numerous updates to the standard
> library such as ordered dictionaries and the new argparse module.
> This release also includes a "IronPython Tools for Visual Studio"
> option within the IronPython installer. This enables one install to
> get both IronPython and IronPython Visual Studio support assuming you
> have an existing installation of Visual Studio 2010. This version of
> IronPython Tools includes a number of bug fixes as well as the start
> of improved WPF designer support. We discovered very late that the
> WPF designer support may crash VS when not running under the debugger.
> If you'd like to try the WPF designer support and give us feedback,
> just launch another Visual Studio instance and attach to the instance
> in which you are using the WPF designer support.
> We've also updated the IronPython installer to include documentation
> based upon the CPython documentation. This new .chm file includes
> documentation on the Python language and standard library. It's been
> extended from the normal Python documentation to include IronPython
> specific topics such as the DLR hosting APIs and extending IronPython
> from statically typed .NET languages.
> We flushed out more support for missing built-in modules which CPython
> includes. This release includes the mmap and signal modules bringing
> better support for interoperating with unmanaged code.
> As usual there are a number of bug fixes and performance
> improvements. This release includes major performance improvements in
> cPickle, the sum built-in function, and includes support for fast
> exceptions which do not use the .NET exception mechanism. There have
> also been improvements to significantly reduce memory usage of the
> IronPython ASTs. One of the end results of these numerous
> improvements is that IronPython's startup time has decreased by 10%
> when compared to IronPython 2.6.1.
> Finally, with this release we have changed the license from the
> Microsoft Public License to the Apache License, Version 2.0. We've
> made this change based upon continual feedback and questions from the
> community. The Apache License will be more familiar while remaining
> an open source license.
> - The IronPython Team
> Users mailing list
> Users at lists.ironpython.com
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