From sebastian at yuca-lab.de  Thu Jan  3 11:46:17 2008
From: sebastian at yuca-lab.de (Sebastian Stang)
Date: Thu, 3 Jan 2008 11:46:17 +0100
Subject: [Python.NET] dotnet, threading and py2exe
Message-ID: <60442E57-FFAC-4E6B-8AC6-7B244463B8DD@yuca-lab.de>

Dear pythoneers,
i want to deliver my program, which runs perfectly 'uncompiled', as an  
exe file to customers.

The problem: i have to use an activeX component in a windows-form, and  
com-components can only be created in single-thread apartments.
But when i use py2exe to compile it, the application is run in a multi- 
threaded-apartment  
(System.Threading.Thread.CurrentThread.GetApartmentState() is MTA).

I tried some workarounds, e.g. create the form in an STA-thread or  
create the activex in an STA like this:

thread_is_ready = False
axBrowser = None
def create_browser_thread(*args):
	global thread_is_ready
	global axBrowser
	print System.Threading.Thread.CurrentThread.GetApartmentState()
	axBrowser = AxSHDocVw.AxWebBrowser()
	thread_is_ready = True

#and the initialization function in my main form class:
def InitializeComponent(self):
	global thread_is_ready
	global axBrowser
	job = System.Threading.ThreadStart(create_browser_thread)
	thread = System.Threading.Thread(job)
	thread.SetApartmentState(System.Threading.ApartmentState.STA)
	thread.Start()
	while not thread_is_ready:
		pass
	self.Controls.Add(axBrowser)
	
This all worked fine when run with python.exe from command-line.
However, compiled with py2exe, the initialization function ends  
without exceptions, but the form is not shown and the program hangs.
Telling the form to shop does not help either.

Did anyone experience similar problems?

best regards,
Pablo

From brian.lloyd at revolutionhealth.com  Thu Jan  3 15:44:14 2008
From: brian.lloyd at revolutionhealth.com (Brian Lloyd)
Date: Thu, 03 Jan 2008 09:44:14 -0500
Subject: [Python.NET] dotnet, threading and py2exe
In-Reply-To: <60442E57-FFAC-4E6B-8AC6-7B244463B8DD@yuca-lab.de>
Message-ID: <C3A25EEE.12C13%brian.lloyd@revolutionhealth.com>

Hi Sebastian - when you talk about it 'running perfectly with
the normal python.exe', I assume you mean the one that comes
with python.net.

That exe is actually written in C# and explicitly sets the
apartment mode to STA.

I suspect the problem is that py2exe will create its own form
of exe which won't do that, so you'll get the default threading
model (MTA).

It might be possible for your script to set the main thread to
STA, if it is the very first thing your program does. You may
want to refer to the docs on that -- I remember it was kind of
complicated and hard to get it set from python code, but don't
recall all of the details.

-Brian


On 1/3/08 5:46 AM, "Sebastian Stang" <sebastian at yuca-lab.de> wrote:

> Dear pythoneers,
> i want to deliver my program, which runs perfectly 'uncompiled', as an
> exe file to customers.
> 
> The problem: i have to use an activeX component in a windows-form, and
> com-components can only be created in single-thread apartments.
> But when i use py2exe to compile it, the application is run in a multi-
> threaded-apartment
> (System.Threading.Thread.CurrentThread.GetApartmentState() is MTA).
> 
> I tried some workarounds, e.g. create the form in an STA-thread or
> create the activex in an STA like this:
> 
> thread_is_ready = False
> axBrowser = None
> def create_browser_thread(*args):
> global thread_is_ready
> global axBrowser
> print System.Threading.Thread.CurrentThread.GetApartmentState()
> axBrowser = AxSHDocVw.AxWebBrowser()
> thread_is_ready = True
> 
> #and the initialization function in my main form class:
> def InitializeComponent(self):
> global thread_is_ready
> global axBrowser
> job = System.Threading.ThreadStart(create_browser_thread)
> thread = System.Threading.Thread(job)
> thread.SetApartmentState(System.Threading.ApartmentState.STA)
> thread.Start()
> while not thread_is_ready:
> pass
> self.Controls.Add(axBrowser)
> 
> This all worked fine when run with python.exe from command-line.
> However, compiled with py2exe, the initialization function ends
> without exceptions, but the form is not shown and the program hangs.
> Telling the form to shop does not help either.
> 
> Did anyone experience similar problems?
> 
> best regards,
> Pablo
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> http://mail.python.org/mailman/listinfo/pythondotnet

--------------------------
Brian Lloyd

brian.lloyd at revolutionhealth.com


From mkozyarchuk at funddevelopmentservices.com  Thu Jan  3 16:55:22 2008
From: mkozyarchuk at funddevelopmentservices.com (Maksim Kozyarchuk)
Date: Thu, 3 Jan 2008 10:55:22 -0500
Subject: [Python.NET] dotnet, threading and py2exe
In-Reply-To: <C3A25EEE.12C13%brian.lloyd@revolutionhealth.com>
Message-ID: <C3A26F9A.420E%mkozyarchuk@funddevelopmentservices.com>

We found that the following code as the first line of your python file puts
you into the STA.

import pythoncom
pythoncom.CoInitialize()

Maksim

On 1/3/08 9:44 AM, "Brian Lloyd" <brian.lloyd at revolutionhealth.com> wrote:

> Hi Sebastian - when you talk about it 'running perfectly with
> the normal python.exe', I assume you mean the one that comes
> with python.net.
> 
> That exe is actually written in C# and explicitly sets the
> apartment mode to STA.
> 
> I suspect the problem is that py2exe will create its own form
> of exe which won't do that, so you'll get the default threading
> model (MTA).
> 
> It might be possible for your script to set the main thread to
> STA, if it is the very first thing your program does. You may
> want to refer to the docs on that -- I remember it was kind of
> complicated and hard to get it set from python code, but don't
> recall all of the details.
> 
> -Brian
> 
> 
> On 1/3/08 5:46 AM, "Sebastian Stang" <sebastian at yuca-lab.de> wrote:
> 
>> > Dear pythoneers,
>> > i want to deliver my program, which runs perfectly 'uncompiled', as an
>> > exe file to customers.
>> >
>> > The problem: i have to use an activeX component in a windows-form, and
>> > com-components can only be created in single-thread apartments.
>> > But when i use py2exe to compile it, the application is run in a multi-
>> > threaded-apartment
>> > (System.Threading.Thread.CurrentThread.GetApartmentState() is MTA).
>> >
>> > I tried some workarounds, e.g. create the form in an STA-thread or
>> > create the activex in an STA like this:
>> >
>> > thread_is_ready = False
>> > axBrowser = None
>> > def create_browser_thread(*args):
>> > global thread_is_ready
>> > global axBrowser
>> > print System.Threading.Thread.CurrentThread.GetApartmentState()
>> > axBrowser = AxSHDocVw.AxWebBrowser()
>> > thread_is_ready = True
>> >
>> > #and the initialization function in my main form class:
>> > def InitializeComponent(self):
>> > global thread_is_ready
>> > global axBrowser
>> > job = System.Threading.ThreadStart(create_browser_thread)
>> > thread = System.Threading.Thread(job)
>> > thread.SetApartmentState(System.Threading.ApartmentState.STA)
>> > thread.Start()
>> > while not thread_is_ready:
>> > pass
>> > self.Controls.Add(axBrowser)
>> >
>> > This all worked fine when run with python.exe from command-line.
>> > However, compiled with py2exe, the initialization function ends
>> > without exceptions, but the form is not shown and the program hangs.
>> > Telling the form to shop does not help either.
>> >
>> > Did anyone experience similar problems?
>> >
>> > best regards,
>> > Pablo
>> > _________________________________________________
>> > Python.NET mailing list - PythonDotNet at python.org
>> > http://mail.python.org/mailman/listinfo/pythondotnet
> 
> --------------------------
> Brian Lloyd
> 
> brian.lloyd at revolutionhealth.com
> 
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> http://mail.python.org/mailman/listinfo/pythondotnet
> 


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From brian.lloyd at revolutionhealth.com  Thu Jan  3 17:19:06 2008
From: brian.lloyd at revolutionhealth.com (Brian Lloyd)
Date: Thu, 03 Jan 2008 11:19:06 -0500
Subject: [Python.NET] dotnet, threading and py2exe
In-Reply-To: <C3A26F9A.420E%mkozyarchuk@funddevelopmentservices.com>
Message-ID: <C3A2752B.12C29%brian.lloyd@revolutionhealth.com>

wow, python.net, pythoncom and py2exe. Just need to find a way to import
IronPython and use something from that too... ;)

-Brian


On 1/3/08 10:55 AM, "Maksim Kozyarchuk"
<mkozyarchuk at funddevelopmentservices.com> wrote:

> We found that the following code as the first line of your python file puts
> you into the STA.
> 
> import pythoncom
> pythoncom.CoInitialize()
> 
> Maksim
> 
> On 1/3/08 9:44 AM, "Brian Lloyd" <brian.lloyd at revolutionhealth.com> wrote:
> 
>> Hi Sebastian - when you talk about it 'running perfectly with
>> the normal python.exe', I assume you mean the one that comes
>> with python.net.
>> 
>> That exe is actually written in C# and explicitly sets the
>> apartment mode to STA.
>> 
>> I suspect the problem is that py2exe will create its own form
>> of exe which won't do that, so you'll get the default threading
>> model (MTA).
>> 
>> It might be possible for your script to set the main thread to
>> STA, if it is the very first thing your program does. You may
>> want to refer to the docs on that -- I remember it was kind of
>> complicated and hard to get it set from python code, but don't
>> recall all of the details.
>> 
>> -Brian
>> 
>> 
>> On 1/3/08 5:46 AM, "Sebastian Stang" <sebastian at yuca-lab.de> wrote:
>> 
>>> > Dear pythoneers,
>>> > i want to deliver my program, which runs perfectly 'uncompiled', as an
>>> > exe file to customers.
>>> >
>>> > The problem: i have to use an activeX component in a windows-form, and
>>> > com-components can only be created in single-thread apartments.
>>> > But when i use py2exe to compile it, the application is run in a multi-
>>> > threaded-apartment
>>> > (System.Threading.Thread.CurrentThread.GetApartmentState() is MTA).
>>> >
>>> > I tried some workarounds, e.g. create the form in an STA-thread or
>>> > create the activex in an STA like this:
>>> >
>>> > thread_is_ready = False
>>> > axBrowser = None
>>> > def create_browser_thread(*args):
>>> > global thread_is_ready
>>> > global axBrowser
>>> > print System.Threading.Thread.CurrentThread.GetApartmentState()
>>> > axBrowser = AxSHDocVw.AxWebBrowser()
>>> > thread_is_ready = True
>>> >
>>> > #and the initialization function in my main form class:
>>> > def InitializeComponent(self):
>>> > global thread_is_ready
>>> > global axBrowser
>>> > job = System.Threading.ThreadStart(create_browser_thread)
>>> > thread = System.Threading.Thread(job)
>>> > thread.SetApartmentState(System.Threading.ApartmentState.STA)
>>> > thread.Start()
>>> > while not thread_is_ready:
>>> > pass
>>> > self.Controls.Add(axBrowser)
>>> >
>>> > This all worked fine when run with python.exe from command-line.
>>> > However, compiled with py2exe, the initialization function ends
>>> > without exceptions, but the form is not shown and the program hangs.
>>> > Telling the form to shop does not help either.
>>> >
>>> > Did anyone experience similar problems?
>>> >
>>> > best regards,
>>> > Pablo
>>> > _________________________________________________
>>> > Python.NET mailing list - PythonDotNet at python.org
>>> > http://mail.python.org/mailman/listinfo/pythondotnet
>> 
>> --------------------------
>> Brian Lloyd
>> 
>> brian.lloyd at revolutionhealth.com
>> 
>> _________________________________________________
>> Python.NET mailing list - PythonDotNet at python.org
>> http://mail.python.org/mailman/listinfo/pythondotnet
>> 
> 
> 


--------------------------
Brian Lloyd

brian.lloyd at revolutionhealth.com

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From dan at thetrowbridgefamily.com  Tue Jan  8 03:10:08 2008
From: dan at thetrowbridgefamily.com (Dan Trowbridge)
Date: Mon, 7 Jan 2008 21:10:08 -0500
Subject: [Python.NET] Memory Leak in MFC/C++ based Python Extended/Embedded
	code.
Message-ID: <EDENLAFIGKNMDJPONOGIMEHLDCAA.dan@thetrowbridgefamily.com>

Hi all,

I have a MS Windows/MFC based C++ code that I have implemented Python
embedding/extending in.  (I am using Visual Studio 2003.)  The code seems to
do what I have intended except it always reports a memory leak when it
exits.  I tried all kinds of things but there did not seem to be anything I
could do to get rid of it.

So...

I built a new MFC project and the only things I added was...

	#include <Python.h>

at the top of the application class .cpp file and the following two lines

	Py_Initialize();
	Py_Finalize();

in the application class constructor.

The minimal code STILL reports a memory error.  It looks like the memory
leak had nothing to do with my code.

Anybody have any ideas how to fix this?

Background: I am using Python 2.5.1.  I am not using BOOST::PYTHON (I am
using BOOST::NUMERIC and BOOST::SHARED_PTR for other things in the code -
maybe I should use BOOST::PYTHON - maybe their shared_ptr's would take care
of this for me? ).  I also am not using SWIG or any other "helpers".

Any help would be greatly appreciated.  If this is not the right forum
please advise where to post this.

It got to figure that someone has seen this before - considering as long as
Python has been around and as big as the developer community is.

Thanks in advance for your collective help.

Dannyt




From brian.lloyd at revolutionhealth.com  Tue Jan  8 15:19:47 2008
From: brian.lloyd at revolutionhealth.com (Brian Lloyd)
Date: Tue, 08 Jan 2008 09:19:47 -0500
Subject: [Python.NET] Memory Leak in MFC/C++ based Python
 Extended/Embedded code.
In-Reply-To: <EDENLAFIGKNMDJPONOGIMEHLDCAA.dan@thetrowbridgefamily.com>
Message-ID: <C3A8F0B3.12E57%brian.lloyd@revolutionhealth.com>

Hi Dan - for regular Python embedding questions you'd be better off asking
on the standard Python list (this list is for an integration of Python with
.NET).

-Brian


On 1/7/08 9:10 PM, "Dan Trowbridge" <dan at thetrowbridgefamily.com> wrote:

> Hi all,
> 
> I have a MS Windows/MFC based C++ code that I have implemented Python
> embedding/extending in.  (I am using Visual Studio 2003.)  The code seems to
> do what I have intended except it always reports a memory leak when it
> exits.  I tried all kinds of things but there did not seem to be anything I
> could do to get rid of it.
> 
> So...
> 
> I built a new MFC project and the only things I added was...
> 
> #include <Python.h>
> 
> at the top of the application class .cpp file and the following two lines
> 
> Py_Initialize();
> Py_Finalize();
> 
> in the application class constructor.
> 
> The minimal code STILL reports a memory error.  It looks like the memory
> leak had nothing to do with my code.
> 
> Anybody have any ideas how to fix this?
> 
> Background: I am using Python 2.5.1.  I am not using BOOST::PYTHON (I am
> using BOOST::NUMERIC and BOOST::SHARED_PTR for other things in the code -
> maybe I should use BOOST::PYTHON - maybe their shared_ptr's would take care
> of this for me? ).  I also am not using SWIG or any other "helpers".
> 
> Any help would be greatly appreciated.  If this is not the right forum
> please advise where to post this.
> 
> It got to figure that someone has seen this before - considering as long as
> Python has been around and as big as the developer community is.
> 
> Thanks in advance for your collective help.
> 
> Dannyt
> 
> 
> 
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> http://mail.python.org/mailman/listinfo/pythondotnet

--------------------------
Brian Lloyd

brian.lloyd at revolutionhealth.com


From adrian at cadifra.com  Wed Jan  9 20:18:56 2008
From: adrian at cadifra.com (Adrian Buehlmann)
Date: Wed, 09 Jan 2008 20:18:56 +0100
Subject: [Python.NET] pythonnet-2.0-alpha2: PyString cannot create 8-bit
	Python strings
Message-ID: <47851E20.4070506@cadifra.com>

Hi all

While trying to call Python code from within C# using "Python.Runtime" from
pythonnet-2.0-alpha2, I ran into a problem using "PyString", which can only
create *unicode* python strings and I needed a way to create 8-bit (single
byte character) Python strings in order to call "PyObject.Invoke(PyTuple,
PyDict)". Detailed report follows below. [Side note: .Net "string" (which is
"System.String") is a unicode string]

I've tried calling Python code from within C# code using:

   Python.Runtime.PyObject.Invoke(PyTuple, PyDict)

I prepared the PyDict by using:

   Python.Runtime.PyObject.this[string]

The original code I tried was:

<code-snip-1>
   PythonEngine.Initialize();
   IntPtr lck = PythonEngine.AcquireLock();

   PyObject mod_builtin = PythonEngine.ImportModule("__builtin__");
   PyObject False = mod_builtin.GetAttr("False");

   PyObject mod_hg = PythonEngine.ImportModule("mercurial");
   PyObject mod_ui = PythonEngine.ImportModule("mercurial.ui");
   PyObject ui_ctor = mod_ui.GetAttr("ui");

   PyDict d = new PyDict();
   d["interactive"] = False;
   PyTuple noargs = new PyTuple();

   PyObject ui = ui_ctor.Invoke(noargs, d);
</code-snip-1>

(For the Mercurial details see:
http://www.selenic.com/mercurial/wiki/
http://selenic.com/repo/hg/file/23889160905a/mercurial/ui.py)

The relevant called python code is:

<code-snip-2>
class ui(object):
     def __init__(self, verbose=False, debug=False, quiet=False,
                  interactive=True, traceback=False,
                  report_untrusted=True, parentui=None):
</code-snip-2>

Problem is, my code-snip-1 didn't work, because that adds
a *unicode* key string to the dict, because it uses:

   Python.Runtime.PyString.PyString(string)

which creates a *unicode" python string. But Invoke() works only when using
8-bit (single byte) strings for the keys in the dict.

To fix this I changed "src/runtime/pydict.cs" (mercurial patch):

<hg-patch1>
# HG changeset patch
# User Adrian Buehlmann
# Date 1199891100 -3600
# Node ID 89623ba76fd3d72c56e05981f2504dd2872560fb
# Parent  3c3b7151ad596a4e6cf3012c33246418c641a66d
New SetItemString() on PyDict

diff -r 3c3b7151ad59 -r 89623ba76fd3 runtime/pydict.cs
--- a/runtime/pydict.cs Wed Jan 09 15:59:24 2008 +0100
+++ b/runtime/pydict.cs Wed Jan 09 16:05:00 2008 +0100
@@ -201,6 +201,22 @@ namespace Python.Runtime {
          public void Clear() {
              Runtime.PyDict_Clear(obj);
          }
+
+
+        /// <summary>
+        /// SetItemString Method
+        /// </summary>
+        ///
+        /// <remarks>
+        /// Inserts value into this dictionary using ansi string key as a key.
+        /// </remarks>
+
+        public void SetItemString(string key, PyObject value) {
+            int result = Runtime.PyDict_SetItemString(obj, key, value.obj);
+            if (result < 0) {
+                throw new PythonException();
+            }
+        }


      }
</hg-patch1>

which adds a new SetItemString() method to PyDict and then did:

<code-snip-3>
   PythonEngine.Initialize();
   IntPtr lck = PythonEngine.AcquireLock();

   PyObject mod_builtin = PythonEngine.ImportModule("__builtin__");
   PyObject False = mod_builtin.GetAttr("False");

   PyObject mod_hg = PythonEngine.ImportModule("mercurial");
   PyObject mod_ui = PythonEngine.ImportModule("mercurial.ui");
   PyObject ui_ctor = mod_ui.GetAttr("ui");

   PyDict d = new PyDict();
   d.SetItemString("interactive", False);
   PyTuple noargs = new PyTuple();

   PyObject ui = ui_ctor.Invoke(noargs, d);
</code-snip-3>

I didn't see a better way to create a PyObject that represents an ansi python
string. With PyString I can only create *unicode* python strings.

I was tempted to do:

<code-snip-4>
     public PyString(string s) : base() {
         // obj = Runtime.PyUnicode_FromUnicode(s, s.Length);  // orig code
         obj = Runtime.PyString_FromString(s);  // create ansi string instead
         if (obj == IntPtr.Zero) {
             throw new PythonException();
         }
     }
</code-snip-4>

but that would break existing code (not mine).

Adrian









From mkozyarchuk at funddevelopmentservices.com  Thu Jan 10 04:08:51 2008
From: mkozyarchuk at funddevelopmentservices.com (Maksim Kozyarchuk)
Date: Wed, 09 Jan 2008 22:08:51 -0500
Subject: [Python.NET] Errors with Python.Net 2.0 SP 1
Message-ID: <C3AAF673.4B49%mkozyarchuk@funddevelopmentservices.com>



Getting the following exception when attempting to bind a python delegate to
an event handler. Has anyone come across this before?



Unhandled Exception: System.TypeInitializationException: The type
initializer for 'Python.Runtime.CodeGenerator' threw an exception. --->
System.InvalidCastException: Unable to cast object of type
'System.Reflection.Module' to type 'System.Reflection.Emit.ModuleBuilder'.
   at System.Reflection.Emit.AssemblyBuilderData.GetInMemoryAssemblyModule()
   at System.AppDomain.InternalDefineDynamicAssembly(AssemblyName name,
AssemblyBuilderAccess access, String dir, Evidence evidence, PermissionSet
requiredPermissions, PermissionSet optionalPermissions, PermissionSet
refusedPermissions, StackCrawlMark& stackMark, IEnumerable`1
unsafeAssemblyAttributes)
   at System.AppDomain.DefineDynamicAssembly(AssemblyName name,
AssemblyBuilderAccess access)
   at Python.Runtime.CodeGenerator..cctor() in
C:\workspace2\Python.Net\runtime\codegenerator.cs:line 37
   --- End of inner exception stack trace ---
   at Python.Runtime.DelegateManager.GetDispatcher(Type dtype) in
C:\workspace2\Python.Net\runtime\delegatemanager.cs:line 79
   at Python.Runtime.DelegateManager.GetDelegate(Type dtype, IntPtr
callable) in C:\workspace2\Python.Net\runtime\delegatemanager.cs:line 168
   at Python.Runtime.EventObject.AddEventHandler(IntPtr target, IntPtr
handler) in C:\workspace2\Python.Net\runtime\eventobject.cs:line 49
   at Python.Runtime.EventBinding.nb_inplace_add(IntPtr ob, IntPtr arg) in
C:\workspace2\Python.Net\runtime\eventbinding.cs:line 44


Here is a simple script that demonstrates this error

>>>>
from System.Windows.Forms import Application

def global_exception_handler(sender, event_args):
    print "GOT AN EXCEPTION"
    print event_args.Exception
Application.ThreadException += global_exception_handler
>>>>
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From nico_ml at mgdesign.fr  Tue Jan 22 10:22:49 2008
From: nico_ml at mgdesign.fr (Nicolas Lelong)
Date: Tue, 22 Jan 2008 10:22:49 +0100
Subject: [Python.NET] current PythonEngine.RunString implementation
Message-ID: <002801c85cd8$5b4aa8d0$d100a8c0@nicopc>

Hello !

First of all, thanks for your work on Python.NET ; I'm a new user, and I'm quite pleased with the abilities of this library !

I'm currently setting up a project aiming at dynamic GUI creation for python objects of an existing codebase. So far, I've been able to make some bootstrapping work, allowing me to view and edit arbitrary python objects using MS PropertyGrid control.

The application I'm working on already embeds a Python interpreter, and I've been able to also embed Python.NET and seamlessly make all this communicate without too much problems.

The only point I had to tweak was PythonEngine.RunString code : the original code calls "PyEval_GetGlobals" which invariably crashed my application. Moreover, I needed a version of RunString that used "Py_eval_input".

I tried to write my own version of RunString using Python.Runtime.Runtime methods, but as they are marked as 'internal', all I could do is patch python.NET code.

For now, I rewrote another version of RunString, which looks similar to the RunString code that is often recommanded ::
Index: pythonengine.cs
===================================================================
--- pythonengine.cs     (r?vision 90)
+++ pythonengine.cs     (copie de travail)
@@ -314,23 +314,24 @@
         /// </remarks>

         public static PyObject RunString(string code) {
-            IntPtr globals = Runtime.PyEval_GetGlobals();
-            IntPtr locals = Runtime.PyDict_New();
+            return RunString(code, Runtime.Py_file_input);
+        }

-            IntPtr builtins = Runtime.PyEval_GetBuiltins();
-            Runtime.PyDict_SetItemString(locals, "__builtins__", builtins);
+        public static PyObject RunString(string code, IntPtr flags)
+        {
+            IntPtr main_module = Runtime.PyImport_AddModule("__main__");
+            IntPtr main_namespace = Runtime.PyModule_GetDict(main_module);

-            IntPtr flag = (IntPtr)257; /* Py_file_input */
-            IntPtr result = Runtime.PyRun_String(code, flag, globals, locals);
-            Runtime.Decref(locals);
-            if (result == IntPtr.Zero) {
+            IntPtr result = Runtime.PyRun_String(code, flags, main_namespace, main_namespace);
+
+            if (result == IntPtr.Zero)
+            {
                 return null;
             }
             return new PyObject(result);
         }


-
     }

It seems that there is often people having problems with a default unique RunString implementation.

As I'd prefer not to have to maintain my own set of patches to Python.NET, I was wondering if it could be possible to remove the 'internal' modifiers on Python.Runtime.Runtime methods so that everyone out there could use them, at their own risk, to create custom python interaction functionalities ?

Any toughts ?

Thanks in advance, cheers,

Nicolas.
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From Sathish.Kaveripakam at phonak.com  Tue Jan 22 16:53:32 2008
From: Sathish.Kaveripakam at phonak.com (Kaveripakam, Sathish)
Date: Tue, 22 Jan 2008 16:53:32 +0100
Subject: [Python.NET] importing the dll using Python on net 2.0
Message-ID: <FBB055C769471C42BBAE2E206073B8ED08580F55@CH01SWC2.corp.ads>

Hi All,
 
I was using  a setup wherein I have python scripts importing the C# dll
(on Python on net 1.0 and Dll is compiled on .nET 1.0) 
Now, my new input dll is compiled for .NET 2.0. To ensure my python
scripts import the C# dll , I started to use the Python ON net 2.0 Alpha
2 version.But I am having problems in importing the dll .
 
Here is my snapshot of the code which used to work using python on
net1.0:
 
import CLR.System.Reflection import Assembly
 
def load():
         name= "x1.dll"
         Assembly.LoadFrom(name)       
         import CLR.x.y.z as z
         return;
 
When the above sample code is compiled on python on net 2.0, I got a
warning "DeprecationWarning: Importing from the CLR.* namespace is
deprecated" and it gives DLL Exception, when I try to use the elements
of the dll.
 
 
Hence I was wondering does the Version 2.0 of python on net has any
special way of porting the dll's compiled on .NET 2.0. Could any one
please let me know, how to handle the CLR issues on Python On net 2.0 ?
 
PS:- I could able to add the reference for the above dll in a stand
alone C# project and I havent found any problems.
 
Regards,
 
 
 

******************** 
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From lists at cheimes.de  Tue Jan 22 18:59:34 2008
From: lists at cheimes.de (Christian Heimes)
Date: Tue, 22 Jan 2008 18:59:34 +0100
Subject: [Python.NET] importing the dll using Python on net 2.0
In-Reply-To: <FBB055C769471C42BBAE2E206073B8ED08580F55@CH01SWC2.corp.ads>
References: <FBB055C769471C42BBAE2E206073B8ED08580F55@CH01SWC2.corp.ads>
Message-ID: <47962F06.3070303@cheimes.de>

Kaveripakam, Sathish wrote:
> Hence I was wondering does the Version 2.0 of python on net has any
> special way of porting the dll's compiled on .NET 2.0. Could any one
> please let me know, how to handle the CLR issues on Python On net 2.0 ?

You don't need to fiddle around with Reflection. PythonDotNet's clr
module contains the function AddReference(). It loads an assembly and
makes its namespaces available to Python.

import clr
clr.AddReference("x1")
from x.y.z as z

Christian


From lists at cheimes.de  Tue Jan 22 18:59:34 2008
From: lists at cheimes.de (Christian Heimes)
Date: Tue, 22 Jan 2008 18:59:34 +0100
Subject: [Python.NET] importing the dll using Python on net 2.0
In-Reply-To: <FBB055C769471C42BBAE2E206073B8ED08580F55@CH01SWC2.corp.ads>
References: <FBB055C769471C42BBAE2E206073B8ED08580F55@CH01SWC2.corp.ads>
Message-ID: <47962F06.3070303@cheimes.de>



Kaveripakam, Sathish wrote:
> Hence I was wondering does the Version 2.0 of python on net has any
> special way of porting the dll's compiled on .NET 2.0. Could any one
> please let me know, how to handle the CLR issues on Python On net 2.0 ?

You don't need to fiddle around with Reflection. PythonDotNet's clr
module contains the function AddReference(). It loads an assembly and
makes its namespaces available to Python.

import clr
clr.AddReference("x1")
from x.y.z as z

Christian



From nico_ml at mgdesign.fr  Thu Jan 24 11:54:58 2008
From: nico_ml at mgdesign.fr (Nicolas Lelong)
Date: Thu, 24 Jan 2008 11:54:58 +0100
Subject: [Python.NET] Errors with Python.Net 2.0 SP 1
Message-ID: <002d01c85e77$9024a920$d100a8c0@nicopc>

Hi,

I have the same problem here since this morning, as XP installed automatically the .NET 2.0 SP 1 update.

Unit test 'leaktest.py' illustrated the problem ::

H:\temp\pythonnet\pythonnet_orig\src\tests>..\..\python.exe leaktest.py
Running module leak check...
  start: 16109568  end: 17137664 diff: +1028096

Running class leak check...

Unhandled Exception: System.TypeInitializationException: The type initializer for 'Python.Runtime.CodeGenerator' threw an exception. --
-> System.InvalidCastException: Unable to cast object of type 'System.Reflection.Module' to type 'System.Reflection.Emit.ModuleBuilder'.
   at System.Reflection.Emit.AssemblyBuilderData.GetInMemoryAssemblyModule()
   at System.AppDomain.InternalDefineDynamicAssembly(AssemblyName name, AssemblyBuilderAccess access, String dir, Evidence evidence, PermissionSet requiredPermissions, PermissionSet optionalPermissions, PermissionSet refusedPermissions, StackCrawlMark& stackMark, IEnumerable`1 unsafeAssemblyAttributes)
   at System.AppDomain.DefineDynamicAssembly(AssemblyName name, AssemblyBuilderAccess access)
   at Python.Runtime.CodeGenerator..cctor() in H:\temp\pythonnet\pythonnet_orig\src\runtime\codegenerator.cs:line 37
   --- End of inner exception stack trace ---
   at Python.Runtime.DelegateManager.GetDispatcher(Type dtype) in H:\temp\pythonnet\pythonnet_orig\src\runtime\delegatemanager.cs:line 79
   at Python.Runtime.DelegateManager.GetDelegate(Type dtype, IntPtr callable) in H:\temp\pythonnet\pythonnet_orig\src\runtime\delegatemanager.cs:line 168
   at Python.Runtime.DelegateObject.tp_new(IntPtr tp, IntPtr args, IntPtr kw) in H:\temp\pythonnet\pythonnet_orig\src\runtime\delegateobject.cs:line 74
   at e__NativeCall.Call_3(IntPtr , IntPtr , IntPtr , IntPtr )
   at Python.Runtime.MetaType.tp_call(IntPtr tp, IntPtr args, IntPtr kw) in H:\temp\pythonnet\pythonnet_orig\src\runtime\metatype.cs:line 156
   at Python.Runtime.Runtime.Py_Main(Int32 argc, String[] argv)
   at Python.Runtime.PythonConsole.Main(String[] args) in H:\temp\pythonnet\pythonnet_orig\src\console\pythonconsole.cs:line 24

I think, for now, I will uninstall this SP1...

Cheers,

Nicolas.
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From nico_ml at mgdesign.fr  Fri Jan 25 09:44:08 2008
From: nico_ml at mgdesign.fr (Nicolas Lelong)
Date: Fri, 25 Jan 2008 09:44:08 +0100
Subject: [Python.NET] Errors with Python.Net 2.0 SP 1
References: <002d01c85e77$9024a920$d100a8c0@nicopc>
Message-ID: <004f01c85f2e$736a2690$d100a8c0@nicopc>

After having setup a minimum repro case for a MSDN Forum (http://forums.microsoft.com/Forums/ShowPost.aspx?PostID=2735385&SiteID=1), I came up with a simple workaround that suits me for now...

The problems comes for the AssemblyManager, it seems that on dynamic Assemblies, the AssemblyLoad event is called before the Assembly object is properly set up, and that the GetTypes() call issued in ScanAssembly messes up the internal state of the newly created Assembly....

As, dynamic assemblies are empty when created, there's no point is scanning them - at least, this is the case of assemblies created by Python.Runtime.CodeGenerator and Python.Runtime.NativeCall.

So, checking is an assembly is dynamic before calling ScanAssembly does the trick, see the following patch :

Index: pythonnet/src/runtime/assemblymanager.cs
===================================================================
--- pythonnet/src/runtime/assemblymanager.cs    (r?vision 90)
+++ pythonnet/src/runtime/assemblymanager.cs    (copie de travail)
@@ -87,7 +87,12 @@
         static void AssemblyLoadHandler(Object ob, AssemblyLoadEventArgs args){
             Assembly assembly = args.LoadedAssembly;
             assemblies.Add(assembly);
-            ScanAssembly(assembly);
+            // .NET v2.0 SP1 bug workaround ; ScanAssembly called on newly created DynamicAssembly causes problems
+            // only scan non-dynamic assemblies...
+            if ( !(assembly is System.Reflection.Emit.AssemblyBuilder) )
+            {
+                ScanAssembly(assembly);
+            }
         }

It fixes the issue, as I'm quite new to .NET I may miss something obvious...

Any thoughts ?

Cheers,
Nicolas.
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From Sathish.Kaveripakam at phonak.com  Mon Jan 28 22:32:11 2008
From: Sathish.Kaveripakam at phonak.com (Kaveripakam, Sathish)
Date: Mon, 28 Jan 2008 22:32:11 +0100
Subject: [Python.NET] Impoting the dll in python 2.0
Message-ID: <FBB055C769471C42BBAE2E206073B8ED08700C6B@CH01SWC2.corp.ads>

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From Sathish.Kaveripakam at phonak.com  Thu Jan 31 17:58:35 2008
From: Sathish.Kaveripakam at phonak.com (Kaveripakam, Sathish)
Date: Thu, 31 Jan 2008 17:58:35 +0100
Subject: [Python.NET] converting Pyobject to user defined type data
	structures
Message-ID: <FBB055C769471C42BBAE2E206073B8ED08791CC9@CH01SWC2.corp.ads>

Hi All,
 
I am reading a PyObject from Python in C#. In C# code, I  would like to
convert the PyObject to the user defined type. In this regard, I used
the call:
<usrDefinedType> x  = (usrDefinedType)
Convert.ChangeType(pyObjectInstance,typeof(usrDefinedType));

The compilation went on fine, but during runtime, I got an error saying:
"Object must implement IConvertible". 

I was wondering, is there any other way to convert the PyObjects to
userdefined types ?

Regards

 


******************** 
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The information in this electronic transmission may contain confidential or
legally privileged information and is intended solely for the individual(s)
named above. If you are not an intended recipient or an authorized agent,
you are hereby notified that reading, distributing, or otherwise
disseminating, copying or taking any action based on the contents of this
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