IronPython 1.1.2

Dave Fugate dfugate at
Fri Aug 8 20:43:20 CEST 2008

Hello Python Community,

I'm pleased to announce the release of IronPython 1.1.2 which is our last planned 1.1 release.  Our 1.x releases in turn target compatibility with CPython 2.4.

IronPython v1.1.2 is a minor update in which we fixed the most requested CodePlex bugs and also a handful of trivial bugs.  In total twenty-one bugs have been resolved for 1.1.2.  It's worth noting that this included the implementation of the "_winreg" CPython module and a few performance improvements in targeted areas. Please also note that there are two potentially breaking changes in this release:
[PicExportError]  * nt.unlink will now throw an exception if the file doesn't exist, as it does in CPython
[PicExportError]  * The signature of IronPython.Runtime.Operations.Ops.Id() has changed and it now returns an object instead of long. This maps to the id() function in Python. Note that there is no change for Python caused by this and only code which is directly calling Ops.Id from a statically typed language like C# or VB will be affected.

The following CodePlex Work Items were closed:

* 16368 1.1.2: nt.access is missing

* 16402 1.1.2: implement _winreg module

* 15105 1.1.2: endpos is zero in IronPython 1.1.1

* 16335 1.1.2: Event handlers can cause circular references and leak memory

* 16337 1.1.2: Trivial: Implement float.__lt__(float)

* 16338 1.1.2: Using lambda in class definition will add <lambda$..> into the

* 16342 1.1.2: calling base class __call__ invokes constructor instead

* 16343 1.1.2: problem with __slots__ and __init__ in new-style classes

* 16347 1.1.2: Trivial: popen shouldn't open new window

* 16348 1.1.2: Removes the inexistent file did not throw OSError in IP

* 16350 1.1.2: int() doesn't convert representable longs to int

* 16351 1.1.2: dict.update doesn't take keyword arguments - differs from CPython

* 16353 1.1.2: Trivial: int('0x20', 16) fails to parse, long too

* 16355 1.1.2: unpacking single element tuples in for-statement, listcomp and generator

* 16356 1.1.2: socket.getnameinfo(...) broken under Vista

* 16360 1.1.2: Class with slots and getattr not compatible

* 16363 1.1.2: Can't call method w/ nullable as 1st argument w/ greater than 5 arguments

* 16364 1.1.2: Backport fix for compiled regular expressions

* 16365 1.1.2: Tuple hashing improvements

* 16366 1.1.2: PyCF_DONT_IMPLY_DEDENT support in compile

* 16749 1.1.2 (Trivial): Modifier of PythonEngine.DefaultCompilerContext(..)

We'd like to thank everyone in the community who contributed to these bugs: Ronnie Maor, jackeyoo, sanxiyn, Michael Foord, Kamil Dworakowski, lthompson, romank, Jeff Brown, rridge, David Fraser, pobrien, ebaklund.

You can download IronPython 1.1.2 from

The IronPython Team
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