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IronPython combines the best of Python and .NET.
IronPython
Nick HodgeProfessional Geek, Microsoft Australia@[email protected]
“Gold” Arromanches, Normandy, France
Inspiration“The speed of the current system is so low as to render the current
implementation useless for anything beyond demonstration purposes.” – ActiveState’s report on Python for .NET
“The CLI is, by design, not friendly to dynamic languages. Prototypes were built, but ran way too slowly.” – Jon Udell, InfoWorld, Aug. 2003
• How could Microsoft have screwed up so badly that the CLR is far worse than the JVM for dynamic languages?– Jython shows that dynamic languages can run well on the JVM
• I decided to write a short pithy paper called, “Why .NET is a terrible platform for dynamic languages”
.NET ?.?DLR2
.NET 4.0
.NET 3.5LINQ
DLR
.NET 2.0
The Common Language Runtime
.NET 1.0GC
BCL
ReflectionJIT
GenericsIn Runtime
ExpressionTrees
ExtensionMethods
StatementTrees
Call Site Caching
DynamicDispatch
DynamicCodegen
VerifierSandbox
Silverlight
FastDelegates
DynamicMethods
Script Hosting ??? ???
PythonBinder
RubyBinder
COMBinder
JavaScriptBinder
ObjectBinder
Dynamic Languages on .NET
Dynamic Language Runtime
Statement Trees Dynamic Dispatch Call Site Caching
IronPython IronRuby C# VB.NET Others…
• Today it shares a site with IronPython– http://codeplex.com/ironpython
• Next month it will move to its own site• MSPL is a permissive Open Source license
• Core V1 components – Trees, Sites, Binders– Will ship in .NET Framework 4.0– Base for C# 4.0’s dynamic
• Future pieces are also available today– Microsoft.Scripting.dll for now
DLR is under MSPL and on codeplex
When to use IronPython?
IPy 1.0• Shipped
Sept. 2006• v2.4
language compatibility
• 27/54 built-in modules
IPy 1.1• Shipped
April 2007• Limited v2.5
language features
• More Modules
• Top user issues
• VS Integration(VSX sample)
IPy 2.0• Current
Focus• Fall 2008• v2.5
language compatibility
• Built on DLR• More
modules• Top User
Issues
IPy 2.6• Alpha
Released• H1 2009• v2.6
language compatibility
• Productize VS integration
IPy 3.0• In Planning• H2 2009 ?• Python
3000 language compatibility
• Support for next version of VS
IronPython Roadmap
LINQ?
Standard Pystone Benchmarkhigher numbers are better
0K10K20K30K40K50K60K70K80K90K
100K
IronPython0.1
Python2.3
IronPython1.0
IronPython2.0beta5
Python2.5
Python2.1
46K
101K90K
80K
50K36K
Two Object Worlds == Pain
Python Objects
C-BasedObjects
py1 c2
IronPython can interop with code written in other .NET lanugages.
Extending IronPython in C#namespace noddy { public class Noddy { public string first, last; public Noddy(string first, string last)
{ this.first = first; this.last = last; } }}
IronPython is embeddable in .NET applications.
import clrclr.AddReference("IronPython.dll")from IronPython.Hosting import PythonEngine
engine = PythonEngine.CurrentEnginescope = engine.CreateScope()source = engine.CreateScriptSourceFromString('6*9')
result = source.Execute(scope)
http://ironpython.codeplex.com/ironpython(Including SVN access to source)
IronPython combines the best of Python and .NET.
IronPython
Nick HodgeProfessional Geek, Microsoft Australia@[email protected]
