Nabble - IronPython

Web Services library

2009-11-27T03:09:35Z

Hello.

What a client library you recomend for using WebServices with IronPython
( something like SOAP.PY ) ?
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Re: IronPyton fails to query IDynamicMetaObjectProvider when looking for IEnumerable

2009-11-26T10:39:16Z

Ok. I got the latest source from codeplex to investigate this a bit. I understand why it doesn’t work and I suspect this is a “bug” but I would love to hear what others say.

So, things go south in PythonConversionBinder.Bind method. It has code like this:

IPythonConvertible convertible = target as IPythonConvertible;

if (convertible != null) {

res = convertible.BindConvert(this);

} else if (res == null) {

res = FallbackConvert(self);

}

Of course, my DynamicMetaObject does not implement IPythonConvertible and this code falls back immediately instead of calling DynamicMetaObject.BindConvert.

I quickly fixed this on my machine by adding a ConvertBinder like this:

class PythonConvertBinder : ConvertBinder

{

PythonConversionBinder m_real;

public PythonConvertBinder(PythonConversionBinder real) : base(real.Type, true)

{

m_real = real;

}

public override DynamicMetaObject FallbackConvert(DynamicMetaObject target, DynamicMetaObject errorSuggestion)

{

return m_real.FallbackConvert(target);

}

And modifying the above code like so:

IPythonConvertible convertible = target as IPythonConvertible;

if (convertible != null) {

res = convertible.BindConvert(this);

} else if (res == null) {

res = target.BindConvert(new PythonConvertBinder(this));

}

I doubt that this is the “right fix” but it demonstrates the nature of the problem.

Albert

From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Albert Szilvasy
Sent: Wednesday, November 25, 2009 11:13 PM
To: 'users@...'
Subject: [IronPython] IronPyton fails to query IDynamicMetaObjectProvider when looking for IEnumerable

Hi there,

I'm experimenting with the DLR and IronPython and I've run into a puzzling issue.

1. I have a type (ObjectId) that implements IDynamicMetaObjectProvider (written in C#).

2. My derived DynamicMetaObjectProvider implements all the plumbing so that ObjectId can be converted to IEnumerable.

Given the above the following C# code works:

dynamic btr = ObjectId.GetBlockTableRecord();

foreach (dynamic o in btr)

o.Prop = 1;

HOWEVER, the following IronPython code fails:

-----

import clr

clr.AddReference("Dyn.exe")

import Dyn

for o in Dyn.ObjectId.GetBlockTableRecord() :

o.Prop = 1

-----

The error I'm getting is this:

TypeError: iteration over non-sequence of type ObjectId

Note that IDynamicMetaObjectProvider::GetMetaObject isn't even called by the IronPython runtime in this situation.

Is this a bug? How can make IronPython query IDynamicMetaObjectProvider in this case?

For you reference here's all the C# code that implements Dyn.exe:

----------------------

using System;

using System.Collections.Generic;

using System.Dynamic;

using System.Linq.Expressions;

using System.Reflection;

namespace Dyn

{

class EnumerableProxy : System.Collections.IEnumerable

{

ObjectId m_id;

public EnumerableProxy(ObjectId id)

{

m_id = id;

}

public System.Collections.IEnumerator GetEnumerator()

{

DBObject o = m_id.Open(OpenMode.ForRead);

System.Collections.IEnumerator e = ((System.Collections.IEnumerable)o).GetEnumerator();

o.Close();

return e;

}

class DbObjectProxy : DynamicMetaObject

{

public DbObjectProxy(Expression expression, ObjectId value):base(expression,BindingRestrictions.Empty, value)

{

}

public override DynamicMetaObject BindUnaryOperation(UnaryOperationBinder binder)

{

Console.WriteLine("BindUnaryOperation");

return base.BindUnaryOperation(binder);

}

public override DynamicMetaObject BindBinaryOperation(BinaryOperationBinder binder, DynamicMetaObject arg)

{

Console.WriteLine("BindBinaryOperation");

return base.BindBinaryOperation(binder, arg);

}

public override DynamicMetaObject BindConvert(ConvertBinder binder)

{

Console.WriteLine("BindConvert");

var id = (ObjectId)base.Value;

Type enumerable = id.Type.GetInterface("System.Collections.IEnumerable");

if (enumerable==null)

return base.BindConvert(binder);

//new EnumarableProxy(id);

var exp = Expression.New(typeof(EnumerableProxy).GetConstructor(new Type[] { typeof(ObjectId) }), new Expression[] { Expression.Convert(base.Expression, typeof(ObjectId)) });

var restr = BindingRestrictions.GetTypeRestriction(base.Expression, typeof(ObjectId));

return new DynamicMetaObject(exp, restr);

}

public override DynamicMetaObject BindCreateInstance(CreateInstanceBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindCreateInstance");

return base.BindCreateInstance(binder, args);

}

public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)

{

Console.WriteLine("BindDeleteIndex");

return base.BindDeleteIndex(binder, indexes);

}

public override DynamicMetaObject BindDeleteMember(DeleteMemberBinder binder)

{

Console.WriteLine("BindDeleteMember");

return base.BindDeleteMember(binder);

}

public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes)

{

Console.WriteLine("BindGetIndex");

var id = (ObjectId)base.Value;

return CreateWrapper(

Expression.MakeIndex(Expression.Convert(obj, id.Type), id.Type.GetProperty("Item"), new Expression[] { indexes[0].Expression }), OpenMode.ForRead);

}

public override DynamicMetaObject BindInvoke(InvokeBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindInvoke");

return base.BindInvoke(binder, args);

}

public override DynamicMetaObject BindInvokeMember(InvokeMemberBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindInvokeMember");

return base.BindInvokeMember(binder, args);

}

public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value)

{

Console.WriteLine("BindSetIndex");

var id = (ObjectId)base.Value;

return CreateWrapper(Expression.Assign(

Expression.MakeIndex(Expression.Convert(obj, id.Type), id.Type.GetProperty("Item"), new Expression[] { indexes[0].Expression }),

value.Expression),OpenMode.ForWrite);

}

static ParameterExpression obj = Expression.Variable(typeof(DBObject), "obj");

DynamicMetaObject CreateWrapper(Expression body, OpenMode openMode)

{

Console.WriteLine("CreateWrapper {0}", body);

var self = Expression.Convert(this.Expression, typeof(ObjectId));

DBObject obj = id.Open(<openMode>);

bool commit = false;

try

{

retValue = <body>

commit = true;

}

finally

{

if (commit)

obj.Close();

else

obj.Cancel();

}

(object)retValue;

var commit = Expression.Variable(typeof(bool), "commit");

var retValue = Expression.Variable(body.Type, "retValue");

var target = Expression.Block(

new ParameterExpression[] {obj, commit, retValue},

Expression.Assign(

obj,

Expression.Call(self,

typeof(ObjectId).GetMethod("Open",BindingFlags.Instance | BindingFlags.NonPublic), Expression.Constant(openMode))

Expression.Assign(commit,Expression.Constant(false)),

Expression.TryFinally(

Expression.Block(

Expression.Assign(retValue,body),

Expression.Assign(commit,Expression.Constant(true))

Expression.IfThenElse(commit,

Expression.Call(obj, typeof(DBObject).GetMethod("Close")),

Expression.Call(obj, typeof(DBObject).GetMethod("Cancel")))

)

Expression.Convert(retValue, typeof(object))

);

var id = (ObjectId)base.Value;

var restrictions =

BindingRestrictions.GetExpressionRestriction(

Expression.Equal( Expression.MakeMemberAccess(self, typeof(ObjectId).GetProperty("Type")), Expression.Constant(id.Type))

);

return new DynamicMetaObject(target, restrictions);

}

public override DynamicMetaObject BindGetMember(GetMemberBinder binder)

{

Console.WriteLine("BindGetMember");

var id = (ObjectId)base.Value;

return CreateWrapper(

Expression.MakeMemberAccess(Expression.Convert(obj, id.Type),

id.Type.GetProperty(binder.Name)),

OpenMode.ForRead);

}

public override DynamicMetaObject BindSetMember(SetMemberBinder binder, DynamicMetaObject value)

{

Console.WriteLine("BindSetMember");

var id = (ObjectId)base.Value;

return CreateWrapper(Expression.Assign(

Expression.MakeMemberAccess(Expression.Convert(obj, id.Type), id.Type.GetProperty(binder.Name)),

value.Expression),OpenMode.ForWrite);

}

public override IEnumerable<string> GetDynamicMemberNames()

{

Console.WriteLine("GetDynamicMemberNames");

return base.GetDynamicMemberNames();

}

enum OpenMode { ForWrite, ForRead }

class DBObject

{

public void Close()

{

Console.WriteLine("DBObject.Close()");

}

public void Cancel()

{

Console.WriteLine("DBObject.Cancel()");

}

class Line : DBObject

{

int m_prop2;

public int Prop

{

get

{

Console.WriteLine("Line.Prop.get()");

return m_prop2;

}

set

{

Console.WriteLine("Line.Prop.set()");

m_prop2 = value;

}

class BlockTableRecord : DBObject, System.Collections.IEnumerable

{

public System.Collections.IEnumerator GetEnumerator()

{

for (int i = 0; i < 5; i++)

{

yield return new ObjectId(typeof(Line));

}

int m_indexer;

public int this[string val]

{

get { return m_indexer; }

set { m_indexer = value; }

}

public struct ObjectId : IDynamicMetaObjectProvider

{

int m_id;

static Dictionary<int, DBObject> handleTable = new Dictionary<int, DBObject>();

public ObjectId(Type type)

{

DBObject obj = (DBObject)Activator.CreateInstance(type);

m_id = obj.GetHashCode();

handleTable.Add(m_id, obj);

}

internal DBObject Open(OpenMode mode)

{

Console.WriteLine("ObjectId.Open({0})", mode);

return handleTable[m_id];

}

public Type Type

{

get { return handleTable[m_id].GetType(); }

}

public DynamicMetaObject GetMetaObject(Expression parameter)

{

Console.WriteLine("ObjectId.GetMetaObject({0})",parameter);

return new DbObjectProxy(parameter, this);

}

public static ObjectId GetBlockTableRecord()

{

return new ObjectId(typeof(BlockTableRecord));

}

public static ObjectId GetLine()

{

return new ObjectId(typeof(Line));

}

class Program

{

static void Main(string[] args)

{

dynamic btr = ObjectId.GetBlockTableRecord();

foreach (dynamic o in btr)

{

o.Prop = 1;

}

---------------------------------

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IronPython 2.6 CodePlex Source Update

2009-11-26T08:53:41Z

IronPyton fails to query IDynamicMetaObjectProvider when looking for IEnumerable

2009-11-25T23:12:45Z

Hi there,

I'm experimenting with the DLR and IronPython and I've run into a puzzling issue.

1. I have a type (ObjectId) that implements IDynamicMetaObjectProvider (written in C#).

2. My derived DynamicMetaObjectProvider implements all the plumbing so that ObjectId can be converted to IEnumerable.

Given the above the following C# code works:

dynamic btr = ObjectId.GetBlockTableRecord();

foreach (dynamic o in btr)

o.Prop = 1;

HOWEVER, the following IronPython code fails:

-----

import clr

clr.AddReference("Dyn.exe")

import Dyn

for o in Dyn.ObjectId.GetBlockTableRecord() :

o.Prop = 1

-----

The error I'm getting is this:

TypeError: iteration over non-sequence of type ObjectId

Note that IDynamicMetaObjectProvider::GetMetaObject isn't even called by the IronPython runtime in this situation.

Is this a bug? How can make IronPython query IDynamicMetaObjectProvider in this case?

For you reference here's all the C# code that implements Dyn.exe:

----------------------

using System;

using System.Collections.Generic;

using System.Dynamic;

using System.Linq.Expressions;

using System.Reflection;

namespace Dyn

{

class EnumerableProxy : System.Collections.IEnumerable

{

ObjectId m_id;

public EnumerableProxy(ObjectId id)

{

m_id = id;

}

public System.Collections.IEnumerator GetEnumerator()

{

DBObject o = m_id.Open(OpenMode.ForRead);

System.Collections.IEnumerator e = ((System.Collections.IEnumerable)o).GetEnumerator();

o.Close();

return e;

}

class DbObjectProxy : DynamicMetaObject

{

public DbObjectProxy(Expression expression, ObjectId value):base(expression,BindingRestrictions.Empty, value)

{

}

public override DynamicMetaObject BindUnaryOperation(UnaryOperationBinder binder)

{

Console.WriteLine("BindUnaryOperation");

return base.BindUnaryOperation(binder);

}

public override DynamicMetaObject BindBinaryOperation(BinaryOperationBinder binder, DynamicMetaObject arg)

{

Console.WriteLine("BindBinaryOperation");

return base.BindBinaryOperation(binder, arg);

}

public override DynamicMetaObject BindConvert(ConvertBinder binder)

{

Console.WriteLine("BindConvert");

var id = (ObjectId)base.Value;

Type enumerable = id.Type.GetInterface("System.Collections.IEnumerable");

if (enumerable==null)

return base.BindConvert(binder);

//new EnumarableProxy(id);

var exp = Expression.New(typeof(EnumerableProxy).GetConstructor(new Type[] { typeof(ObjectId) }), new Expression[] { Expression.Convert(base.Expression, typeof(ObjectId)) });

var restr = BindingRestrictions.GetTypeRestriction(base.Expression, typeof(ObjectId));

return new DynamicMetaObject(exp, restr);

}

public override DynamicMetaObject BindCreateInstance(CreateInstanceBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindCreateInstance");

return base.BindCreateInstance(binder, args);

}

public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)

{

Console.WriteLine("BindDeleteIndex");

return base.BindDeleteIndex(binder, indexes);

}

public override DynamicMetaObject BindDeleteMember(DeleteMemberBinder binder)

{

Console.WriteLine("BindDeleteMember");

return base.BindDeleteMember(binder);

}

public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes)

{

Console.WriteLine("BindGetIndex");

var id = (ObjectId)base.Value;

return CreateWrapper(

Expression.MakeIndex(Expression.Convert(obj, id.Type), id.Type.GetProperty("Item"), new Expression[] { indexes[0].Expression }), OpenMode.ForRead);

}

public override DynamicMetaObject BindInvoke(InvokeBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindInvoke");

return base.BindInvoke(binder, args);

}

public override DynamicMetaObject BindInvokeMember(InvokeMemberBinder binder, DynamicMetaObject[] args)

{

Console.WriteLine("BindInvokeMember");

return base.BindInvokeMember(binder, args);

}

public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value)

{

Console.WriteLine("BindSetIndex");

var id = (ObjectId)base.Value;

return CreateWrapper(Expression.Assign(

Expression.MakeIndex(Expression.Convert(obj, id.Type), id.Type.GetProperty("Item"), new Expression[] { indexes[0].Expression }),

value.Expression),OpenMode.ForWrite);

}

static ParameterExpression obj = Expression.Variable(typeof(DBObject), "obj");

DynamicMetaObject CreateWrapper(Expression body, OpenMode openMode)

{

Console.WriteLine("CreateWrapper {0}", body);

var self = Expression.Convert(this.Expression, typeof(ObjectId));

DBObject obj = id.Open(<openMode>);

bool commit = false;

try

{

retValue = <body>

commit = true;

}

finally

{

if (commit)

obj.Close();

else

obj.Cancel();

}

(object)retValue;

var commit = Expression.Variable(typeof(bool), "commit");

var retValue = Expression.Variable(body.Type, "retValue");

var target = Expression.Block(

new ParameterExpression[] {obj, commit, retValue},

Expression.Assign(

obj,

Expression.Call(self,

typeof(ObjectId).GetMethod("Open",BindingFlags.Instance | BindingFlags.NonPublic), Expression.Constant(openMode))

Expression.Assign(commit,Expression.Constant(false)),

Expression.TryFinally(

Expression.Block(

Expression.Assign(retValue,body),

Expression.Assign(commit,Expression.Constant(true))

Expression.IfThenElse(commit,

Expression.Call(obj, typeof(DBObject).GetMethod("Close")),

Expression.Call(obj, typeof(DBObject).GetMethod("Cancel")))

)

Expression.Convert(retValue, typeof(object))

);

var id = (ObjectId)base.Value;

var restrictions =

BindingRestrictions.GetExpressionRestriction(

Expression.Equal( Expression.MakeMemberAccess(self, typeof(ObjectId).GetProperty("Type")), Expression.Constant(id.Type))

);

return new DynamicMetaObject(target, restrictions);

}

public override DynamicMetaObject BindGetMember(GetMemberBinder binder)

{

Console.WriteLine("BindGetMember");

var id = (ObjectId)base.Value;

return CreateWrapper(

Expression.MakeMemberAccess(Expression.Convert(obj, id.Type),

id.Type.GetProperty(binder.Name)),

OpenMode.ForRead);

}

public override DynamicMetaObject BindSetMember(SetMemberBinder binder, DynamicMetaObject value)

{

Console.WriteLine("BindSetMember");

var id = (ObjectId)base.Value;

return CreateWrapper(Expression.Assign(

Expression.MakeMemberAccess(Expression.Convert(obj, id.Type), id.Type.GetProperty(binder.Name)),

value.Expression),OpenMode.ForWrite);

}

public override IEnumerable<string> GetDynamicMemberNames()

{

Console.WriteLine("GetDynamicMemberNames");

return base.GetDynamicMemberNames();

}

enum OpenMode { ForWrite, ForRead }

class DBObject

{

public void Close()

{

Console.WriteLine("DBObject.Close()");

}

public void Cancel()

{

Console.WriteLine("DBObject.Cancel()");

}

class Line : DBObject

{

int m_prop2;

public int Prop

{

get

{

Console.WriteLine("Line.Prop.get()");

return m_prop2;

}

set

{

Console.WriteLine("Line.Prop.set()");

m_prop2 = value;

}

class BlockTableRecord : DBObject, System.Collections.IEnumerable

{

public System.Collections.IEnumerator GetEnumerator()

{

for (int i = 0; i < 5; i++)

{

yield return new ObjectId(typeof(Line));

}

int m_indexer;

public int this[string val]

{

get { return m_indexer; }

set { m_indexer = value; }

}

public struct ObjectId : IDynamicMetaObjectProvider

{

int m_id;

static Dictionary<int, DBObject> handleTable = new Dictionary<int, DBObject>();

public ObjectId(Type type)

{

DBObject obj = (DBObject)Activator.CreateInstance(type);

m_id = obj.GetHashCode();

handleTable.Add(m_id, obj);

}

internal DBObject Open(OpenMode mode)

{

Console.WriteLine("ObjectId.Open({0})", mode);

return handleTable[m_id];

}

public Type Type

{

get { return handleTable[m_id].GetType(); }

}

public DynamicMetaObject GetMetaObject(Expression parameter)

{

Console.WriteLine("ObjectId.GetMetaObject({0})",parameter);

return new DbObjectProxy(parameter, this);

}

public static ObjectId GetBlockTableRecord()

{

return new ObjectId(typeof(BlockTableRecord));

}

public static ObjectId GetLine()

{

return new ObjectId(typeof(Line));

}

class Program

{

static void Main(string[] args)

{

dynamic btr = ObjectId.GetBlockTableRecord();

foreach (dynamic o in btr)

{

o.Prop = 1;

}

---------------------------------

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Re: v1.1 IronPython.CodeDom.PythonProvider

2009-11-25T20:37:06Z

Hi Owen,

As far as I know if you want to compile a python code you could use: clr.CompileModules(…). Or you could use the pyc.py provided in the IronPython2.0 Samples download.

ipy.exe pyc.py /main:winforms_hw.py /target:winexe which will produce a winforms_hw.dll as well. I’m not sure if you could use these compiles assemblies from C# or VB but with Ironpython it should be possible. I’m not sure if this is what you were looking for but hope it helps.

Aravin

From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Owen Sigurdson
Sent: Wednesday, November 25, 2009 11:23 PM
To: users@...
Subject: [IronPython] v1.1 IronPython.CodeDom.PythonProvider

I am attempting to upgrade a component from iron python 1.1 to 2.6 that was previously using the PythonProvider to compile python code into a .NET assembly. It looks like this is no longer present in 2.6. Is this correct? Are their any plans to resurrect it? The biggest difficulty I am facing is not that we require the code to be compiled in an assembly but that reflection used to return methods in an python class. Now reflecting on a python class (that subclasses a given .NET class) only returns the .NET class members.

Thanks,

Owen

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Re: Memory Leak in IronPython 2.6 RC3

2009-11-25T09:45:16Z

That looks like it's removing that memory leak. I'm not positive
that's the one we're having in our production code, but it certainly
can't hurt.

On Nov 25, 5:37 am, Dino Viehland <di...@...> wrote:

> My guess here (I'm on vacation so I haven't tried this) is that some exception info
> is not getting cleared -
>
> ExceptionHelpers.DynamicStackFrames = null;
>
> In the catch block will probably fix it although we should probably
> do this ourselves.
>
>
>
>
>
> > -----Original Message-----
> > From: users-boun...@... [mailto:users-
> > boun...@...] On Behalf Of Jonathan Howard
> > Sent: Tuesday, November 24, 2009 4:45 PM
> > To: us...@...
> > Cc: jfelk...@...
> > Subject: [IronPython] Memory Leak in IronPython 2.6 RC3
>
> > I'm trying to track down a memory leak in our hosted IronPython
> > application as we upgrade to 2.6 from 1.1.2. I saw a post at
> > stackoverflow (http://stackoverflow.com/questions/1664567/embedded-
> > ironpython-memory-leak
> > ) showing how to set up the environment to avoid leaking memory, but
> > we're still having a memory leak. If I take our identical setup code,
> > and use it on very simple code, there's no problem, but we have
> > thousands of lines of Python at this point.
>
> > Below is a minimum way to introduce a memory leak inside a hosted
> > IronPython application. I don't know if it's the only way, or if it's
> > what's affecting us, but it does cause a leak: (Obviously it needs
> > the appropriate DLLs etc.)
>
> > #############################################
>
> > using System;
> > using System.Threading;
> > using IronPython.Hosting;
> > using IronPython.Runtime;
> > using IronPython.Compiler;
> > using System.Collections.Generic;
> > using Microsoft.Scripting.Hosting;
>
> > namespace IPyTest
> > {
> > class Program
> > {
> > static void Main(string[] args)
> > {
> > bool cont = true;
> > while (cont)
> > {
> > var ipy = new IPy();
> > try
> > {
> > // Set the below boolean to "false" to run without
> > a memory leak
> > // Set it to "true" to run with a memory leak.
> > ipy.run(true);
> > }
> > catch { }
> > }
> > }
> > }
>
> > class IPy
> > {
> > private string scriptWithoutLeak = "import random;
> > random.randint(1,10)";
> > private string scriptWithLeak = "raise Exception(), 'error'";
>
> > public IPy()
> > {
> > }
>
> > public void run(bool withLeak)
> > {
> > //set up script environment
> > Dictionary<String, Object> options = new
> > Dictionary<string, object>();
> > options["LightweightScopes"] = true;
> > ScriptEngine engine = Python.CreateEngine(options);
> > PythonCompilerOptions pco = (PythonCompilerOptions)
> > engine.GetCompilerOptions();
> > pco.Module &= ~ModuleOptions.Optimized;
> > engine.SetSearchPaths(new string[]{
> > @"C:\Program Files\IronPython 2.6\Lib"
> > });
> > ScriptRuntime runtime = engine.Runtime;
> > ScriptScope scope = runtime.CreateScope();
> > var source = engine.CreateScriptSourceFromString(
> > withLeak ? scriptWithLeak : scriptWithoutLeak
> > );
> > var comped = source.Compile();
> > comped.Execute(scope);
> > runtime.Shutdown();
> > }
> > }
> > }
> > _______________________________________________
> > Users mailing list
> > Us...@...
> >http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>
> _______________________________________________
> Users mailing list
> Us...@...://lists.ironpython.com/listinfo.cgi/users-ironpython.com

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IronPython 2.6 CodePlex Source Update

2009-11-25T08:52:52Z

v1.1 IronPython.CodeDom.PythonProvider

2009-11-25T07:22:37Z

Thanks,

Owen

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Re the The Fifth Assembly post (http://devhawk.net/2008/10/21/The+Fifth+Assembly.aspx)

2009-11-25T07:02:36Z

Hello,

We are experiencing the problem that is mentioned in this post using IronPython 2.6 RC 2 but are un-able to un-reference the associated assembly. I am getting the following error:

Error 2 Unknown build error, 'Cannot resolve dependency to assembly 'Microsoft.Scripting.ExtensionAttribute, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.'

Would anyone have any insight into what is going on here?

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Re: Memory Leak in IronPython 2.6 RC3

2009-11-25T05:37:36Z

My guess here (I'm on vacation so I haven't tried this) is that some exception info
is not getting cleared -

ExceptionHelpers.DynamicStackFrames = null;

In the catch block will probably fix it although we should probably
do this ourselves.

> -----Original Message-----
> From: users-bounces@... [mailto:users-
> bounces@...] On Behalf Of Jonathan Howard
> Sent: Tuesday, November 24, 2009 4:45 PM
> To: users@...
> Cc: jfelkner@...
> Subject: [IronPython] Memory Leak in IronPython 2.6 RC3
>
> I'm trying to track down a memory leak in our hosted IronPython
> application as we upgrade to 2.6 from 1.1.2. I saw a post at
> stackoverflow ( http://stackoverflow.com/questions/1664567/embedded-
> ironpython-memory-leak
> ) showing how to set up the environment to avoid leaking memory, but
> we're still having a memory leak. If I take our identical setup code,
> and use it on very simple code, there's no problem, but we have
> thousands of lines of Python at this point.
>
> Below is a minimum way to introduce a memory leak inside a hosted
> IronPython application. I don't know if it's the only way, or if it's
> what's affecting us, but it does cause a leak: (Obviously it needs
> the appropriate DLLs etc.)
>
> #############################################
>
> using System;
> using System.Threading;
> using IronPython.Hosting;
> using IronPython.Runtime;
> using IronPython.Compiler;
> using System.Collections.Generic;
> using Microsoft.Scripting.Hosting;
>
> namespace IPyTest
> {
> class Program
> {
> static void Main(string[] args)
> {
> bool cont = true;
> while (cont)
> {
> var ipy = new IPy();
> try
> {
> // Set the below boolean to "false" to run without
> a memory leak
> // Set it to "true" to run with a memory leak.
> ipy.run(true);
> }
> catch { }
> }
> }
> }
>
> class IPy
> {
> private string scriptWithoutLeak = "import random;
> random.randint(1,10)";
> private string scriptWithLeak = "raise Exception(), 'error'";
>
> public IPy()
> {
> }
>
> public void run(bool withLeak)
> {
> //set up script environment
> Dictionary<String, Object> options = new
> Dictionary<string, object>();
> options["LightweightScopes"] = true;
> ScriptEngine engine = Python.CreateEngine(options);
> PythonCompilerOptions pco = (PythonCompilerOptions)
> engine.GetCompilerOptions();
> pco.Module &= ~ModuleOptions.Optimized;
> engine.SetSearchPaths(new string[]{
> @"C:\Program Files\IronPython 2.6\Lib"
> });
> ScriptRuntime runtime = engine.Runtime;
> ScriptScope scope = runtime.CreateScope();
> var source = engine.CreateScriptSourceFromString(
> withLeak ? scriptWithLeak : scriptWithoutLeak
> );
> var comped = source.Compile();
> comped.Execute(scope);
> runtime.Shutdown();
> }
> }
> }
> _______________________________________________
> Users mailing list
> Users@...
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com

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Memory Leak in IronPython 2.6 RC3

2009-11-24T16:44:31Z

I'm trying to track down a memory leak in our hosted IronPython
application as we upgrade to 2.6 from 1.1.2. I saw a post at
stackoverflow ( http://stackoverflow.com/questions/1664567/embedded-ironpython-memory-leak
) showing how to set up the environment to avoid leaking memory, but
we're still having a memory leak. If I take our identical setup code,
and use it on very simple code, there's no problem, but we have
thousands of lines of Python at this point.

Below is a minimum way to introduce a memory leak inside a hosted
IronPython application. I don't know if it's the only way, or if it's
what's affecting us, but it does cause a leak: (Obviously it needs
the appropriate DLLs etc.)

#############################################

using System;
using System.Threading;
using IronPython.Hosting;
using IronPython.Runtime;
using IronPython.Compiler;
using System.Collections.Generic;
using Microsoft.Scripting.Hosting;

namespace IPyTest
{
class Program
{
static void Main(string[] args)
{
bool cont = true;
while (cont)
{
var ipy = new IPy();
try
{
// Set the below boolean to "false" to run without
a memory leak
// Set it to "true" to run with a memory leak.
ipy.run(true);
}
catch { }
}
}
}

class IPy
{
private string scriptWithoutLeak = "import random;
random.randint(1,10)";
private string scriptWithLeak = "raise Exception(), 'error'";

public IPy()
{
}

public void run(bool withLeak)
{
//set up script environment
Dictionary<String, Object> options = new
Dictionary<string, object>();
options["LightweightScopes"] = true;
ScriptEngine engine = Python.CreateEngine(options);
PythonCompilerOptions pco = (PythonCompilerOptions)
engine.GetCompilerOptions();
pco.Module &= ~ModuleOptions.Optimized;
engine.SetSearchPaths(new string[]{
@"C:\Program Files\IronPython 2.6\Lib"
});
ScriptRuntime runtime = engine.Runtime;
ScriptScope scope = runtime.CreateScope();
var source = engine.CreateScriptSourceFromString(
withLeak ? scriptWithLeak : scriptWithoutLeak
);
var comped = source.Compile();
comped.Execute(scope);
runtime.Shutdown();
}
}
}
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IronPython 2.6 CodePlex Source Update

2009-11-24T08:52:42Z

This is an automated email letting you know that sources
have recently been pushed out. You can download these newer
sources directly from http://ironpython.codeplex.com/SourceControl/changeset/view/61762.

MODIFIED SOURCES
$/IronPython/IronPython_Main/Src/Tests/interop/net/type/test_clrtype.py
$/IronPython/IronPython_Main/Src/IronPython/Lib/iptest/misc_util.py
$/IronPython/IronPython_Main/Src/Tests/modules/io_related/codecs_test.py
$/IronPython/IronPython_Main/Src/Tests/regressions.py
$/IronPython/IronPython_Main/Src/Tests/test_help.py
$/IronPython/IronPython_Main/Src/Tests/test_cliclass.py
$/IronPython/IronPython_Main/Src/Tests/test_stdmodules.py
$/IronPython/IronPython_Main/Src/Tests/test_winforms.py

CHECKIN COMMENTS
--------------------------------------------------------------------------------
Changeset Id: 1284427
Date: 11/23/2009 2:05:34 PM

(CPy) test_doctest.py - CP23430 has been fixed
(CPy) test_mailbox.py - CP16453 and CP13702 are fixed, but test cases still disabled for other reasons
iptest.misc_util - added a few more strange codec encodings
regressions.py - added regressions for CP23822 and CP23823
test_cliclass.py - extended test_dir. Added regressions for test_cp24004 and test_cp23772
test_help.py - added a regression for "help(type)". Still broken under Silverlight
test_stdmodules.py - added a regression for CP21929. Fixed
test_winforms.py - CP9908 is fixed
codecs_test.py - CP20302 is nearly fixed

(Shelveset: CP84;REDMOND\dfugate | SNAP CheckinId: 9909)

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IronPython 2.6 CodePlex Source Update

2009-11-23T08:54:37Z

This is an automated email letting you know that sources
have recently been pushed out. You can download these newer
sources directly from http://ironpython.codeplex.com/SourceControl/changeset/view/61729.

MODIFIED SOURCES
$/IronPython/IronPython_Main/Config/Signed/App.config
$/IronPython/IronPython_Main/Config/Unsigned/App.config
$/IronPython/IronPython_Main/Tutorial/Tutorial.htm

CHECKIN COMMENTS
--------------------------------------------------------------------------------
Changeset Id: 1282641
Date: 11/20/2009 6:33:26 PM

http://ironpython.codeplex.com/WorkItem/View.aspx?WorkItemId=25420
Disabled verification of section T3.1.2 in the IronPython Tutorial test. This is all based on AgentServer which doesn't exist in Windows 7.

(Shelveset: MSAGENT_TUT;REDMOND\dfugate | SNAP CheckinId: 9879)

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Re: built-in modules

2009-11-22T21:13:47Z

I started writing up some documentation around this as part of our push to actually have useful documentation J Here’s the current version of that – if you have any feedback or additional questions it’d be great to hear to improve the docs.

1. Implementing new modules in .NET

When creating a new module usually you would just implement it in IronPython its self. But sometimes you may have requirements that preclude implementing it in IronPython. These could be due to needing a .NET library which IronPython cannot fully or easily consume (because it requires attributes, for example), due to performance, or other reasons. When you run into this road block you have one of two options.

First, you can simply expose this functionality as a normal .NET library and allow the user to interact with it through the normal IronPython .NET interop mechanisms. Alternately you can implement a Python module in your favorite .NET language. If you’re not entirely sure which one to choose you’re lucky because there’s not much difference between the two - but in this section we’ll cover how to implement a Python module.

The first thing to do is to create a new project, or open an existing one, and add a reference to IronPython.dll.

The next step is to define a new class and add an assembly level PythonModuleAttribute which points at the class giving the module name and type. After doing this you should have a file which looks like:

C# example:

using System;

using IronPython.Runtime;

[assembly: PythonModule("my_module", typeof(MyModule))]

public static class MyModule {

}

VB.NET example:

Imports System

Imports IronPython.Runtime

<Assembly: PythonModule("my_module", GetType(MyModule))>

Public Module MyModule

End Module

Consuming from Python:

>>> import clr

>>> clr.AddReference('test')

>>> import my_module

From here you just need to start implementing the functionality of your module. You can start to add methods, fields, properties, or types. All the member must be static as there will not be an instance of the module created.

Here’s an example where we define a method, a property, and a couple of fields. One of the fields is a literal and the other is a static field. One important detail to note is that modules are entirely read-only. Even if you implement a property or a mutable field IronPython will never set a value into the property or field. Instead the updated field will always be stored in the modules dictionary.

C# example:

using System;

using IronPython.Runtime;

[assembly: PythonModule("my_module", typeof(MyModule))]

public static class MyModule {

public static void hello_world() {

Console.WriteLine("hello world");

}

public static string foo {

get {

return "foo";

}

public const string bar = "bar";

public static readonly string baz = "baz";

}

VB.NET example:

Imports System

Imports IronPython.Runtime

<Assembly: PythonModule("my_module", GetType(MyModule))>

Public Module MyModule

Public Sub hello_world()

Console.WriteLine("Hello World")

End Sub

Public ReadOnly Property foo As String

Get

Return "foo"

End Get

End Property

Public Const bar As String = "bar"

Public ReadOnly baz As String = "baz"

End Module

Consuming from Python:

>>> import clr

>>> clr.AddReference('test')

>>> import my_module

>>> my_module.hello_world()

hello world

>>> my_module.foo

'foo'

>>> my_module.bar

'bar'

>>> my_module.baz

'baz'

1.1. Initialization / Reloading

If your module requires to run specific code to be initialized you can provide a method marked with SpecialNameAttribute which receives the PythonContext the module is running in as well as the PythonDictionary where the module members will live.

This example will make “some_name” available in the module and it will have the value “Hello World”.

C# example:

using System;

using System.Runtime.CompilerServices;

using IronPython.Runtime;

[assembly: PythonModule("my_module", typeof(MyModule))]

public static class MyModule {

[SpecialName]

public static void PerformModuleReload(PythonContext context, PythonDictionary dict) {

dict["some_name"] = "Hello World";

}

VB.NET example:

Imports System

Imports IronPython.Runtime

Imports System.Runtime.CompilerServices

<Assembly: PythonModule("my_module", GetType(MyModule))>

Public Module MyModule

<SpecialName> _

Public Sub PerformModuleReload(ByVal context As PythonContext, ByVal dict As PythonDictionary)

dict("some_name") = "Hello World"

End Sub

End Module

Consuming from Python:

>>> import clr

>>> clr.AddReference('test')

>>> import my_module

>>> my_module.some_value

'Hello World'

>>>

1.2. Per-Runtime State

Because modules are static classes you need to have somewhere you can store state for the current IronPython runtime instance. If you were to store it in a static field this state would bleed between IronPython runtimes in the same app domain. To accomodate this the PythonContext has a set of APIs which are specifically designed for storing state for Python modules. These APIs can be used either in the PerformModuleReload method or in methods which receive CodeContext as their first parameter. The CodeContext object will automatically be flowed in and from it you can get the PythonContext from the LanguageContext property.

C# example:

using System;

using IronPython.Runtime;

[assembly: PythonModule("my_module", typeof(MyModule))]

public static class MyModule {

private static readonly object _stateKey = new object();

public static object get_state(CodeContext context, object value) {

object prev_value = null;

if (context.LanguageContext.HasModuleState(_stateKey)) {

prev_value = context.LanguageContext.GetModuleState(_stateKey);

}

context.LanguageContext.SetModuleState(_stateKey, value);

return prev_value;

}

VB.NET example:

Imports System

Imports IronPython.Runtime

<Assembly: PythonModule("my_module", GetType(MyModule))>

Public Module MyModule

dim _stateKey as object = new object()

Public Function get_state(ByVal context As CodeContext, ByVal value As Object) As Object

Dim moduleState As Object = Nothing

If context.LanguageContext.HasModuleState(MyModule._stateKey) Then

moduleState = context.LanguageContext.GetModuleState(MyModule._stateKey)

End If

context.LanguageContext.SetModuleState(MyModule._stateKey, value)

Return moduleState

End Function

End Module

Consuming from Python:

>>> import clr

>>> clr.AddReference('test')

>>> from my_module import get_state

>>> get_state(42)

>>> get_state(23)

1.2.1. Runtime State API Reference

public object GetModuleState(object key)

Gets per-runtime state used by a module. The module should have a unique key for each piece of state it needs to store.

public void SetModuleState(object key, object value)

Sets per-runtime state used by a module. The module should have a unique key for each piece of state it needs to store.

public object GetSetModuleState(object key, object value)

Sets per-runtime state used by a module and returns the previous value. The module should have a unique key for each piece of state it needs to store.

public T GetOrCreateModuleState<T>(object key, Func<T> value)

Gets the the module state if a value already exists. If one does not exist then calls the provided delegate to create the new value. The module should have a unique key for each piece of state it needs to store.

bool HasModuleState(object key)

Checks to see if module state has the current value stored already.

1.3. Deploying Modules

So far in all of the examples we’ve seen the Python consumer has been required to call clr.AddReference on the module containing the DLL before it can be used. Obviously this is less than ideal as it both requires import clr (which has the side effect of making .NET members available) as well as requiring the AddReference call itself.

ipy.exe also supports automatically loading modules which have been deployed to a directory named “DLLs” next to ipy.exe. Therefore once you’ve finished developing your module you can copy it over and it will always be available.

From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Slide
Sent: Sunday, November 22, 2009 9:04 PM
To: Discussion of IronPython
Subject: [IronPython] built-in modules

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built-in modules

2009-11-22T21:04:25Z

Are there any tutorials on writing modules that appear as built-ins? does it have to be part of the IronPython.Modules assembly to be loaded correctly?

thanks,

slide

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pdb.set_trace in 2.6?

2009-11-22T16:59:35Z

Is the pdb.set_trace functionality going to be in the first production release of 2.6? It doesn't appear to be in RC3...

Thanks,
Mike Gates

Compiling .py to .dll to use with Silverlight

2009-11-22T13:26:37Z

Hi,
I'd like to know status of the $subj. I have found some discussions
(e.g. Michael tried to use pyc or
http://sdlsdk.codeplex.com/Thread/View.aspx?ThreadId=52207&ANCHOR
<http://sdlsdk.codeplex.com/Thread/View.aspx?ThreadId=52207&ANCHOR>) but
no working example - is there any? And if not will be any? :-)
Thanks.

--
-- Lukáš

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Re: WCF Service in pure IronPython

2009-11-22T12:19:25Z

Hi,
I am able to save the WCF service to the assembly, so I can use .config
files to configure it - see
http://gui-at.blogspot.com/2009/11/wcf-service-in-pure-ironpython-with.html

I think there is only a small step left to make possible to host
IronPython WCF services in IIS.

IIS configures services in .svc files which contains the following:

<% @ServiceHost Service="myWcfService.myService" %>

This obviously fails because IIS cannot find such type in the .dll
created by pyc.py. Does anybody have an idea how to overcome this issue?

--
-- Lukáš

Lukas Cenovsky wrote:

> The latest version of clrtype.py has support for ClrInterface
> metaclass - see the usage on my blog:
> http://gui-at.blogspot.com/2009/11/wcf-service-in-pure-ironpython.html
>
> --
> -- Lukáš
>
>
>
> _______________________________________________
> Users mailing list
> Users@...
> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>
>

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Re: Ability to use CPython csv module

2009-11-22T09:20:11Z

2009/11/19 Slide <slide.o.mix@...>:
> Are modules things that can be contributed to IP? If I were to go write a
> compatible _csv module and post it as a patch, would it be accepted?

As I understand, no. But you can provide a compatible _csv module
outside of IP, and indeed this is exactly what is happening on pyexpat
module right now.

--
Seo Sanghyeon
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Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-21T15:45:42Z

No need. It hasn't been verified as Fixed yet, and I should be getting to this particular bug next week. Looks like you've probably even saved me a bit of investigative time for proving this can't be closed so thanks:)

Dave

-----Original Message-----
From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Michael Foord
Sent: Saturday, November 21, 2009 7:59 AM
To: Discussion of IronPython
Subject: Re: [IronPython] [ANN]: IronPython 2.6 Release Candidate 3

Dave Fugate wrote:
> Hi Michael, glancing over the source history it appears as if _codecs.lookup_error has been disabled under Silverlight forever and is not a regression from IronPython 2.0. That said, it might turn out this falls under the umbrella of http://ironpython.codeplex.com/WorkItem/View.aspx?WorkItemId=17383, and is something we can address for 2.6.1.
>
>

That issue is closed, shall I open a new one?

Michael

> Thanks,
>
> Dave
>
> -----Original Message-----
> From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Michael Foord
> Sent: Friday, November 20, 2009 4:01 PM
> To: Discussion of IronPython
> Subject: Re: [IronPython] [ANN]: IronPython 2.6 Release Candidate 3
>
> Dave Fugate wrote:
>
>> Hello Python Community,
>>
>> We're pleased to announce the third and hopefully final release
>> candidate of IronPython 2.6 which can be downloaded at
>> http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36150.
>> Release Candidate 3 only includes Silverlight-related changes
>> pertaining to some incompatibilities between 2.6 RC1 and RC2. Those
>> who utilize IronPython for non-Silverlight scenarios will happily find
>> virtually no churn from RC2. We strongly encourage everyone interested
>> in Silverlight to test out this release ASAP because we plan on
>> releasing IronPython 2.6 final in a week if no major new regressions
>> are detected.
>>
>>
> Any chance the _codecs issue I mentioned is fixed in Release Candidate
> 3? It blocks me using the standard library json module (simplejson) in
> Silverlight so is a major PITA.
>
> Michael
>
>
>
>> Thanks to everyone in the IronPython Community who reported bugs and
>> provided valuable feedback: Zachc, yamakox, vernondcole, VAks,
>> tscottw, tonyandrewmeyer, tomwright, TomasMatousek, tkamiya, timers,
>> srivatsn, sopeajw, saveenr, sanxiyn, rridge, ronniemaor, quirogaco,
>> pythonfoo, py_sunil, pm100, pl6306, paulfelix, orestis, olegt, oldman,
>> NDHUMuscle, mycall, mmaly, mmacdonaldssfcu, maplpro, luntain, llaske,
>> lbaker, Lawouach, laurionb, laughingboy, kurhan, kuno, kowenswp,
>> klrohe, kevgu, jmesserly, jlunder, jdhardy, jbevain, jackeyoo,
>> hhonisch, gz, gjones, fwereade, deadalusai, daveremy, CurtHagenlocher,
>> chaghi, cgravill, cartman, bobarnso, atifaziz, ashcor, alvanet,
>> __Helmut__, fuzzyman, fabiofz, Eloff, egonw_, dungen, dsblank, and
>> dmajnemer.
>>
>> Thank you for your continued support of IronPython.
>>
>> The IronPython Team
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Users mailing list
>> Users@...
>> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>>
>>
>
>
>

--
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Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-21T07:59:04Z

Dave Fugate wrote:
> Hi Michael, glancing over the source history it appears as if _codecs.lookup_error has been disabled under Silverlight forever and is not a regression from IronPython 2.0. That said, it might turn out this falls under the umbrella of http://ironpython.codeplex.com/WorkItem/View.aspx?WorkItemId=17383, and is something we can address for 2.6.1.
>
>

That issue is closed, shall I open a new one?

Michael

Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-21T05:49:38Z

[Dropping python-announce-list]

Yes, it’s certain that the hosting APIs will not ship in .NET 4. Basically everything that is in Microsoft.Scripting.Core.dll is what has made its way into .NET 4.0. Sorry if that wasn’t clear.

You’ll also notice that Microsoft.Scripting.dll has been split into Microsoft.Scripting.dll and Microsoft.Dynamic.dll; the hosting APIs are still contained in Microsoft.Scripting.dll, while the things language implementers need to care about is in Microsoft.Dynamic.dll. We’re trying to not change Microsoft.Scripting.dll as much as possible, as those APIs have undergone some rigorous design and reviews. Microsoft.Dynamic.dll definitely will change.

~Jimmy

From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Keith J. Farmer
Sent: Saturday, November 21, 2009 2:56 AM
To: Discussion of IronPython; python-announce-list@...
Subject: Re: [IronPython] [ANN]: IronPython 2.6 Release Candidate 3

Hey, Dave.. Based on Dino’s presentation at PDC, is it therefore certain that the hosting APIs will *not* ship as part of .NET 4? Has there been any official word as to support of those APIs in that event?

From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Dave Fugate
Sent: Friday, November 20, 2009 9:54 AM
To: users@...; python-announce-list@...
Subject: [IronPython] [ANN]: IronPython 2.6 Release Candidate 3

Hello Python Community,

We’re pleased to announce the third and hopefully final release candidate of IronPython 2.6 which can be downloaded at http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36150. Release Candidate 3 only includes Silverlight-related changes pertaining to some incompatibilities between 2.6 RC1 and RC2. Those who utilize IronPython for non-Silverlight scenarios will happily find virtually no churn from RC2. We strongly encourage everyone interested in Silverlight to test out this release ASAP because we plan on releasing IronPython 2.6 final in a week if no major new regressions are detected.

Thanks to everyone in the IronPython Community who reported bugs and provided valuable feedback: Zachc, yamakox, vernondcole, VAks, tscottw, tonyandrewmeyer, tomwright, TomasMatousek, tkamiya, timers, srivatsn, sopeajw, saveenr, sanxiyn, rridge, ronniemaor, quirogaco, pythonfoo, py_sunil, pm100, pl6306, paulfelix, orestis, olegt, oldman, NDHUMuscle, mycall, mmaly, mmacdonaldssfcu, maplpro, luntain, llaske, lbaker, Lawouach, laurionb, laughingboy, kurhan, kuno, kowenswp, klrohe, kevgu, jmesserly, jlunder, jdhardy, jbevain, jackeyoo, hhonisch, gz, gjones, fwereade, deadalusai, daveremy, CurtHagenlocher, chaghi, cgravill, cartman, bobarnso, atifaziz, ashcor, alvanet, __Helmut__, fuzzyman, fabiofz, Eloff, egonw_, dungen, dsblank, and dmajnemer.

Thank you for your continued support of IronPython.

The IronPython Team

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Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-21T02:56:17Z

Hello Python Community,

Thank you for your continued support of IronPython.

The IronPython Team

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Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-20T20:36:57Z

Hi Michael, glancing over the source history it appears as if _codecs.lookup_error has been disabled under Silverlight forever and is not a regression from IronPython 2.0. That said, it might turn out this falls under the umbrella of http://ironpython.codeplex.com/WorkItem/View.aspx?WorkItemId=17383, and is something we can address for 2.6.1.

Thanks,

Dave

-----Original Message-----
From: users-bounces@... [mailto:users-bounces@...] On Behalf Of Michael Foord
Sent: Friday, November 20, 2009 4:01 PM
To: Discussion of IronPython
Subject: Re: [IronPython] [ANN]: IronPython 2.6 Release Candidate 3

Dave Fugate wrote:

>
> Hello Python Community,
>
> We're pleased to announce the third and hopefully final release
> candidate of IronPython 2.6 which can be downloaded at
> http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36150.
> Release Candidate 3 only includes Silverlight-related changes
> pertaining to some incompatibilities between 2.6 RC1 and RC2. Those
> who utilize IronPython for non-Silverlight scenarios will happily find
> virtually no churn from RC2. We strongly encourage everyone interested
> in Silverlight to test out this release ASAP because we plan on
> releasing IronPython 2.6 final in a week if no major new regressions
> are detected.
>

Any chance the _codecs issue I mentioned is fixed in Release Candidate
3? It blocks me using the standard library json module (simplejson) in
Silverlight so is a major PITA.

Michael

> Thanks to everyone in the IronPython Community who reported bugs and
> provided valuable feedback: Zachc, yamakox, vernondcole, VAks,
> tscottw, tonyandrewmeyer, tomwright, TomasMatousek, tkamiya, timers,
> srivatsn, sopeajw, saveenr, sanxiyn, rridge, ronniemaor, quirogaco,
> pythonfoo, py_sunil, pm100, pl6306, paulfelix, orestis, olegt, oldman,
> NDHUMuscle, mycall, mmaly, mmacdonaldssfcu, maplpro, luntain, llaske,
> lbaker, Lawouach, laurionb, laughingboy, kurhan, kuno, kowenswp,
> klrohe, kevgu, jmesserly, jlunder, jdhardy, jbevain, jackeyoo,
> hhonisch, gz, gjones, fwereade, deadalusai, daveremy, CurtHagenlocher,
> chaghi, cgravill, cartman, bobarnso, atifaziz, ashcor, alvanet,
> __Helmut__, fuzzyman, fabiofz, Eloff, egonw_, dungen, dsblank, and
> dmajnemer.
>
> Thank you for your continued support of IronPython.
>
> The IronPython Team
>
> ------------------------------------------------------------------------
>
> _______________________________________________
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> Users@...
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>

Re: [ANN]: IronPython 2.6 Release Candidate 3

2009-11-20T16:00:35Z

Dave Fugate wrote:

>
> Hello Python Community,
>
> We’re pleased to announce the third and hopefully final release
> candidate of IronPython 2.6 which can be downloaded at
> http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=36150.
> Release Candidate 3 only includes Silverlight-related changes
> pertaining to some incompatibilities between 2.6 RC1 and RC2. Those
> who utilize IronPython for non-Silverlight scenarios will happily find
> virtually no churn from RC2. We strongly encourage everyone interested
> in Silverlight to test out this release ASAP because we plan on
> releasing IronPython 2.6 final in a week if no major new regressions
> are detected.
>

Any chance the _codecs issue I mentioned is fixed in Release Candidate
3? It blocks me using the standard library json module (simplejson) in
Silverlight so is a major PITA.

Michael

[ANN]: IronPython 2.6 Release Candidate 3

2009-11-20T09:54:05Z

Hello Python Community,

Thank you for your continued support of IronPython.

The IronPython Team

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IronPython 2.6 CodePlex Source Update

2009-11-20T08:52:38Z

This is an automated email letting you know that sources
have recently been pushed out. You can download these newer
sources directly from http://ironpython.codeplex.com/SourceControl/changeset/view/61659.

ADDED SOURCES
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MODIFIED SOURCES
$/IronPython/IronPython_Main/Doc/Chiron.txt
$/IronPython/IronPython_Main/Src/Tests/Modes/ConsoleFlags.ps1

CHECKIN COMMENTS
--------------------------------------------------------------------------------
Changeset Id: 1280333
Date: 11/19/2009 3:05:23 PM

Merged over IronPython\Public\Doc changes from IP 2.6 branch.
Attempting to fix another Win7/PowerShell 2.0 issue.

(Shelveset: CHIRON_DOC;REDMOND\dfugate | SNAP CheckinId: 9864)

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Re: IRONPYTHONPATH

2009-11-20T02:02:55Z

David Seruyange wrote:
> It's been a while since I've written some IronPython. By reflex/memory
> I was going to set IRONPYTHONPATH but wondered if anything had changed
> w/r/t the Python Standard Library. Just for the sake of interest I ran
> "import this" with IronPython 2.6 RC2 and I do get The Zen of Python.
> Pretty trite but that didn't work w/o setting the aforementioned
> environment variable beforehand.

If you install IronPython 2.6 then you get the working parts of the
Python standard library and they are automatically on sys.path - no need
to set IRONPYTHONPATH just to get the standard library.

All the best,

Michael

>
> David
>
> ------------------------------------------------------------------------
>
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>

IRONPYTHONPATH

2009-11-19T20:41:15Z

It's been a while since I've written some IronPython. By reflex/memory I was going to set IRONPYTHONPATH but wondered if anything had changed w/r/t the Python Standard Library. Just for the sake of interest I ran "import this" with IronPython 2.6 RC2 and I do get The Zen of Python. Pretty trite but that didn't work w/o setting the aforementioned environment variable beforehand.

David

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IronPython 2.6 CodePlex Source Update

2009-11-19T12:09:03Z

This is an automated email letting you know that sources
have recently been pushed out. You can download these newer
sources directly from http://ironpython.codeplex.com/SourceControl/changeset/view/61619.

MODIFIED SOURCES
$/IronPython/IronPython_2_6/Src/IronPython.Modules/IronPython.Modules.csproj
$/IronPython/IronPython_2_6/Src/IronPython/IronPython.csproj
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$/IronPython/IronPython_2_6/Src/Hosts/SilverLight/Microsoft.Scripting.Silverlight/Microsoft.Scripting.Silverlight.csproj
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$/IronPython/IronPython_2_6/Src/Runtime/Microsoft.Scripting/Microsoft.Scripting.csproj
$/IronPython/IronPython_2_6/Src/Tests/ClrAssembly/ClrAssembly.csproj

CHECKIN COMMENTS
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Changeset Id: 1279997
Date: 11/19/2009 11:26:29 AM

Added Chiron instructions in the form of Doc\Chiron.txt.
Updated the Wix ProductVersion number for IP 2.6.

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_codecs in Silverlight

2009-11-19T11:26:46Z

Hello all,

In IronPython 2.6 RC2 the Silverlight implementation of _codecs seems to
have missing 'bits' - specifically lookup_error is missing which breaks
the encodings module. This means I can't use a recent version of
simplejson with Silverlight.

Any way I can mitigate against this? Any reason for this?

All the best,

Michael Foord

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http://www.voidspace.org.uk/blog

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IronPython 2.6 CodePlex Source Update

2009-11-18T15:25:44Z

This is an automated email letting you know that sources
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ADDED SOURCES
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$/IronPython/IronPython_2_6/Doc/Chiron.txt
$/IronPython/IronPython_2_6/Src/IronPython.Modules/IronPython.Modules.csproj
$/IronPython/IronPython_2_6/Src/IronPython/IronPython.csproj
$/IronPython/IronPython_2_6/Src/IronPythonTest/IronPythonTest.csproj
$/IronPython/IronPython_2_6/Src/Hosts/SilverLight/Microsoft.Scripting.Silverlight/Microsoft.Scripting.Silverlight.csproj
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$/IronPython/IronPython_2_6/Src/Runtime/Microsoft.Scripting.Core/Microsoft.Scripting.Core.csproj
$/IronPython/IronPython_2_6/Src/Runtime/Microsoft.Scripting.Core/Microsoft.Scripting.ExtensionAttribute.csproj
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$/IronPython/IronPython_2_6/Src/Runtime/Microsoft.Scripting/Microsoft.Scripting.csproj
$/IronPython/IronPython_2_6/Src/Tests/ClrAssembly/ClrAssembly.csproj

CHECKIN COMMENTS
--------------------------------------------------------------------------------
Changeset Id: 1250429
Date: 11/3/2009 12:39:57 PM

(dfugate) Migrated sbs_library.dll change from the Main branch over to IP_26.

(Shelveset: SBS_LIBRARY_IP26;REDMOND\dfugate | SNAP CheckinId: 9735)

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Re: Ability to use CPython csv module

2009-11-18T13:45:04Z

Are modules things that can be contributed to IP? If I were to go write a compatible _csv module and post it as a patch, would it be accepted?

Thanks,

slide

On Wed, Nov 18, 2009 at 2:16 PM, William Clifford <william.clifford.mit@...> wrote:

Thanks. That may be an option for a little while, at least as far as reading csv files goes. Writing them really shouldn't be too hard to implement, but rather than re-write essentially a library of my code, I think I'll hold off on the switch for a little while, at least until some of the CPython mods like csv are ported over.

Some time ago, Joshua Kramer wrote:
>
> I had some csv-involved tasks to complete with IronPython 2.0.2. I did
> not use CSV from CPython. However, there is another way to do this:
>
> http://www.ironpython.info/index.php/Reading_CSV_Files
>
> I was able to use the LumenWorks CSV DLL without issue.
>
> Best,
> -JK

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Mobile: 954-347-8037

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Re: Ability to use CPython csv module

2009-11-18T13:16:35Z

Thanks. That may be an option for a little while, at least as far as reading csv files goes. Writing them really shouldn't be too hard to implement, but rather than re-write essentially a library of my code, I think I'll hold off on the switch for a little while, at least until some of the CPython mods like csv are ported over.

Some time ago, Joshua Kramer wrote:

> I had some csv-involved tasks to complete with IronPython 2.0.2. I did
> not use CSV from CPython. However, there is another way to do this:
>
> http://www.ironpython.info/index.php/Reading_CSV_Files
>
> I was able to use the LumenWorks CSV DLL without issue.
>
> Best,
> -JK

--
William M. Clifford, M.I.T.
william.clifford.mit@...
Mobile: 954-347-8037

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IronPython 2.6 CodePlex Source Update

2009-11-18T12:07:27Z

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$/IronPython/IronPython_2_6/Src/Hosts/SilverLight/Microsoft.Scripting.Silverlight/init.rb
$/IronPython/IronPython_2_6/Src/Hosts/SilverLight/Microsoft.Scripting.Silverlight/Repl.cs
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