Are you running on a beta of Orcas? It could be an Orcas bug. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dino Viehland Sent: Friday, November 02, 2007 4:12 PM To: Discussion of IronPython Subject: Re: [IronPython] [python] Re: Embedding CPython Messes with the IronPython 2 Import Mechanism
I'm not sure what's going on here - I've pinged the CLR dev who owns this feature. In some patches (at some point) post v2.0.50727.42 there were some changes made to Ref.Emit w.r.t. ModuleBuilder's vs. Modules - this looks like it could be a regression related to those changes. But I don't understand the big picture here. As a work around you might be able to run in -X:GenerateAsSnippets mode. In v2.0 this results in about a 10% perf degrade (last time I measured at least, and this was against Pystone) but stops us from generating types to create modules. So ultimately we won't create an assembly and won't go down this code path. Of course, that may just be putting off the inevitable. Another possiblity might be grepping Python.NET to see if they're doing anything weird w/ Module or Assembly objects, although I wouldn't know exactly what to look for. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Foord Sent: Friday, November 02, 2007 3:33 PM To: Discussion of IronPython Subject: Re: [IronPython] [python] Re: Embedding CPython Messes with the IronPython 2 Import Mechanism You asked for it. :-) IronPython console: IronPython 2.0A5 (2.0.11011.00) on .NET 2.0.50727.1378 Copyright (c) Microsoft Corporation. All rights reserved. >>> import clr >>> clr.AddReference('Python.Runtime') >>> from Python.Runtime import PythonEngine >>> engine = PythonEngine() >>> engine.Initialize() >>> import xyzz Unable to cast object of type 'System.Reflection.Module' to type 'System.Reflect ion.Emit.ModuleBuilder'. at System.Reflection.Emit.AssemblyBuilderData.GetInMemoryAssemblyModule() at System.AppDomain.InternalDefineDynamicAssembly(AssemblyName name, Assembly BuilderAccess access, String dir, Evidence evidence, PermissionSet requiredPermi ssions, PermissionSet optionalPermissions, PermissionSet refusedPermissions, Sta ckCrawlMark& stackMark, IEnumerable`1 unsafeAssemblyAttributes) at System.AppDomain.DefineDynamicAssembly(AssemblyName name, AssemblyBuilderA ccess access) at Microsoft.Scripting.Generation.AssemblyGen..ctor(String moduleName, String outDir, String outFile, AssemblyGenAttributes generationAttributes, PortableExe cutableKinds peKind, ImageFileMachine machine) at Microsoft.Scripting.Generation.StaticFieldModuleGenerator.CreateModuleAsse mbly(ScriptCode scriptCode) at Microsoft.Scripting.Generation.StaticFieldModuleGenerator.CreateSlotFactor y(ScriptCode scriptCode) at Microsoft.Scripting.Generation.OptimizedModuleGenerator.CreateStorageAlloc ator(ScriptCode scriptCode) at Microsoft.Scripting.Generation.OptimizedModuleGenerator.GenerateScriptMeth ods() at Microsoft.Scripting.Generation.OptimizedModuleGenerator.GenerateScope() at Microsoft.Scripting.ScriptDomainManager.CreateModule(String name, ScriptMo duleKind kind, Scope scope, ScriptCode[] scriptCodes) at Microsoft.Scripting.ScriptDomainManager.CompileModule(String name, ScriptM oduleKind kind, Scope scope, CompilerOptions options, ErrorSink errorSink, Sourc eUnit[] sourceUnits) at Microsoft.Scripting.ScriptDomainManager.CompileModule(String name, SourceU nit sourceUnit) at IronPython.Runtime.Importer.LoadModuleFromSource(CodeContext context, Stri ng name, String path) at IronPython.Runtime.Importer.ImportFromPath(CodeContext context, String nam e, String fullName, List path) at IronPython.Runtime.Importer.ImportTopAbsolute(CodeContext context, String name) at IronPython.Runtime.Importer.ImportModule(CodeContext context, String modNa me, Boolean bottom) at IronPython.Runtime.Builtin.__import__(CodeContext context, String name, Ob ject globals, Object locals, Object fromList) at _stub_##2(Object[] , DynamicSite`6 , CodeContext , Object , String , IAttr ibutesCollection , IAttributesCollection , PythonTuple ) at Microsoft.Scripting.Actions.DynamicSite`6.Invoke(CodeContext context, T0 a rg0, T1 arg1, T2 arg2, T3 arg3, T4 arg4) at IronPython.Runtime.Operations.PythonOps.ImportTop(CodeContext context, Str ing fullName) at ##18(Object[] , CodeContext ) at Microsoft.Scripting.ScriptCode.Run(CodeContext codeContext, Boolean tryEva luate) at Microsoft.Scripting.ScriptCode.Run(ScriptModule module) at Microsoft.Scripting.Hosting.CompiledCode.Evaluate(IScriptModule module) at Microsoft.Scripting.Hosting.ScriptEngine.ExecuteCommand(String code, IScri ptModule module) at Microsoft.Scripting.Shell.CommandLine.RunOneInteraction() at Microsoft.Scripting.Shell.CommandLine.TryInteractiveAction() at IronPython.Hosting.PythonCommandLine.TryInteractiveAction() at Microsoft.Scripting.Shell.CommandLine.RunInteractiveLoop() TypeError: Unable to cast object of type 'System.Reflection.Module' to type 'Sys tem.Reflection.Emit.ModuleBuilder'. >>> Dino Viehland wrote: > Could you run with -X:ExceptionDetail and report back the stack trace? > That'll let us know where the exception is actually coming from. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Foord > Sent: Friday, November 02, 2007 3:25 PM > To: Discussion of IronPython > Subject: [IronPython] Embedding CPython Messes with the IronPython 2 Import > Mechanism > > Hello Guys, > > Not sure what is going on here, nor whether it indicates a bug in > IronPython, but it is certainly odd. Loading a CPython interpreter > through the Python.NET assembly seems to change the IronPython (2a5) > import machinery. > > I have a test module 'xyzz.py' that has an unused name 'wibble'. > Unsurprisingly, attempting to import this into IronPython 2.0a5 raises a > name error: > > IronPython console: IronPython 2.0A5 (2.0.11011.00) on .NET 2.0.50727.1378 > Copyright (c) Microsoft Corporation. All rights reserved. > >>> import xyzz > Traceback (most recent call last): > File , line 0, in ##7 > File , line 0, in _stub_##2 > File C:\compile\cext\trunk\cext\xyzz.py, line 1, in Initialize > NameError: name 'wibble' is not defined > > > Executing the following code, (using the 'Python.Runtime' assembly from > Python.NET with Python 2.4): > > IronPython console: IronPython 2.0A5 (2.0.11011.00) on .NET 2.0.50727.1378 > Copyright (c) Microsoft Corporation. All rights reserved. > >>> import clr > >>> clr.AddReference('Python.Runtime') > >>> > >>> from Python.Runtime import PythonEngine > >>> engine = PythonEngine() > >>> engine.Initialize() > >>> > >>> import xyzz > Traceback (most recent call last): > File , line 0, in ##18 > File , line 0, in _stub_##2 > File mscorlib, line unknown, in DefineDynamicAssembly > File mscorlib, line unknown, in InternalDefineDynamicAssembly > TypeError: Unable to cast object of type 'System.Reflection.Module' to > type 'Sys > tem.Reflection.Emit.ModuleBuilder'. > > Just importing the 'PythonEngine' isn't enough. The problem only happens > if the PythonEngine is instantiated and initialized. > > All the best, > > > Michael > > > _______________________________________________ > Users mailing list > Users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > _______________________________________________ > Users mailing list > Users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > > _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
