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<p class=MsoNormal><span style='color:#1F497D'>The only change I had to make to
get your simple sample code to work was change PythonInstance to derive from
MarshalByRefObject. I wonder if typeof(Program).Assembly.Location could end up
pointing to a location which is not fully trusted (e.g. a network share?) It
seems highly unlikely but it’s the only explanation I can come up with (.NET
determines what level of trust to grant assemblies based upon what zone the
code came from – where the zone is the same zones that IE uses).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using System;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using
System.Collections.Generic;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using System.Text;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using System.IO;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using System.Reflection;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using IronPython.Hosting;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using IronPython.Runtime;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using
IronPython.Runtime.Operations;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>using IronPython.Modules;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>namespace ConsoleApplication1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>{<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> [Serializable]<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> public class PythonInstance
: MarshalByRefObject<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> {<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> // IronPython Modules<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> private static
PythonEngine _python;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> public PythonInstance()<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> {<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> // Create Python
Engine<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> EngineOptions
options = new EngineOptions();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
options.ExceptionDetail = true;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
options.ClrDebuggingEnabled = true;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
PythonInstance._python = new PythonEngine(options);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> public void
AddPythonPath(string path)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> {<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
PythonInstance._python.AddToPath(path);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> class Program<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> {<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> static void
Main(string[] args)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> {<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> AppDomainSetup setup
= new AppDomainSetup();<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
setup.ApplicationName = Assembly.GetEntryAssembly().FullName;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
setup.ApplicationBase =
Path.GetDirectoryName(typeof(Program).Assembly.Location);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> AppDomain domain =
AppDomain.CreateDomain("PythonDomain", null, setup);<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> // Create Test
Engine in remote domain<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> object obj = domain.CreateInstanceAndUnwrap("ConsoleApplication1",<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
"ConsoleApplication1.PythonInstance");<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> PythonInstance
python = obj as PythonInstance;<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
python.AddPythonPath(@"C:\temp");<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> }<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>}<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>michael_sweeney@agilent.com<br>
<b>Sent:</b> Wednesday, May 23, 2007 9:22 AM<br>
<b>To:</b> users@lists.ironpython.com<br>
<b>Subject:</b> Re: [IronPython] PythonEngine in separate AppDomain?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Hi Dino,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I get this error with or without
the permission code. Here is the problem I am trying to solve...<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We have a test tool that allows
the load/reload of Python test scripts. It is implemented in CPython. We manipulate
the sys.modules dictionary to “clean” out any modules the test module loaded.
This “cleaning” allows the developers to quickly run/edit/reload/run the test
scripts. We are porting this application to IronPython by hosting the
PythonEngine in a C# application. The new tool allows the user to load .NET
assemblies as well as the classic python modules. The ability to reload is
handy. Since it is possible to unload AppDomains for the assembly based tests,
I was thinking that just putting the PythonEngine in a separate AppDomain I
could handle the unload the same way. This is when I started running into
permission issues.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I wanted to avoid the “cleaning”
of the sys.modules dictionary because it has proved error-prone in the CPython
implementation. I may have to start going down this path.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks for your feedback.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Mike<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>Dino Viehland<br>
<b>Sent:</b> Tuesday, May 22, 2007 1:54 PM<br>
<b>To:</b> Discussion of IronPython<br>
<b>Subject:</b> Re: [IronPython] PythonEngine in separate AppDomain?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Are you getting this even if you
don’t do anything w/ permissions? <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>You’re going to have a tough
time running IronPython in partial trust before .NET 2.0 SP1 or Orcas. In
SP1 of the CLR (which is the CLR included w/ Orcas and I believe will ship
stand-alone as its own SP at some point) various portions of Reflection.Emit
have had the appropriate security hardening to ensure they work properly in
partial trust. Unfortunately both of those are still beta code </span><span
style='font-family:Wingdings;color:#1F497D'>L</span><span style='color:#1F497D'>.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>Thanks
in advance...<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'>Mike<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Consolas'> </span><span
style='font-family:Consolas'> <o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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