Mailman 3 June 2005 - Python.NET

running .net with standard 2.4.1 installation
by Guy Robinson June 30, 2005

June 30, 2005

Hello, I've put the CLR and runtime dll's in my standard windows 2.4.1 installation and I'm getting the following(see below) crash and error information. It appears the runtime dll isn't being found. Yet they're both in the python/dll directory. I did have the binary pythonDotNet installed. But have uninstalled it. Can anyone shed some light on what's going on? Regards, Guy Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import CLR.System as System Unhandled Exception: System.IO.FileNotFoundException: File or assembly name Pyth on.Runtime, or one of its dependencies, was not found. File name: "Python.Runtime" at CLRModule.initCLR() === Pre-bind state information === LOG: DisplayName = Python.Runtime, Version=1.0.0.0, Culture=neutral, PublicKeyTo ken=null (Fully-specified) LOG: Appbase = e:\python24\ LOG: Initial PrivatePath = NULL Calling assembly : (Unknown). === LOG: Application configuration file does not exist. LOG: Policy not being applied to reference at this time (private, custom, partia l, or location-based assembly bind). LOG: Post-policy reference: Python.Runtime, Version=1.0.0.0, Culture=neutral, Pu blicKeyToken=null LOG: Attempting download of new URL file:///e:/python24/Python.Runtime.DLL. LOG: Attempting download of new URL file:///e:/python24/Python.Runtime/Python.Ru ntime.DLL. LOG: Attempting download of new URL file:///e:/python24/Python.Runtime.EXE. LOG: Attempting download of new URL file:///e:/python24/Python.Runtime/Python.Ru ntime.EXE.

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attribute semantics question
by Stan Pinte June 16, 2005

June 16, 2005

hello, It is currently possible to add new attributes using the standard python notation, to existing C# objects. like that: #C is C# class cInstance = C() c.NewProperty = "hop" #NewProperty Property is not defined at the C# level. My questions: 1: is this the desired/expected behaviour? 2: is this usable at C# level (I should test, I suppose, using introspection ;-) --> I find it sometimes annoying not to know that I am defining a new attribute, because such dynamicity is not expected at C# level (well at python level). thanks a lot for your help, Stan.

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Error Pythonnet
by COOL Steven June 8, 2005

June 8, 2005

Hello I'm trying to use Pythonnet put when I try to start the python.exe I get an error.(see figure) I have tried to run the console application from my VS environment. And tried to debug it. The exception is comming in this function (see Runtime.cs): [DllImport(Runtime.dll, CallingConvention=CallingConvention.Cdecl, ExactSpelling=true, CharSet=CharSet.Ansi)] internal unsafe static extern IntPtr PyTuple_GetItem(IntPtr pointer, int index); Regards Steven Cool Development Engineer Protronic NV Rozendaalstraat 53 BE-8900 Ieper P: + 32 (0)57 22 47 09 E-mail: scl(a)protronic.com **** DISCLAIMER **** The contents of this e-mail are intended for the named addressee only. It contains information which may be confidential and which may also be privileged. Unless you are the named addressee (or authorised to receive for the addressee) you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. Further, we make every effort to keep our network free from viruses. However, you do need to verify that this email and any attachments are free of viruses as we can take no responsibility for any computer virus which might be transferred by way of this e-mail.

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Announce: Python for .NET 1.0 RC2 released
by Brian Lloyd June 6, 2005

June 6, 2005

Hi all - I'm happy to announce the release of Python for .NET 1.0 RC2. You can download it from: http://www.zope.org/Members/Brian/PythonNet Highlights of this release: - Changed some uses of Finalize as a static method name that confused the Mono compiler and people reading the code. Note that this may be a breaking change if anyone was calling PythonEngine.Finalize(). If so, you should now use PythonEngine.Shutdown(). - Tweaked assembly lookup to ensure that assemblies can be found in the current working directory, even after changing directories using things like os.chdir() from Python. - Fixed some incorrect finalizers (thanks to Greg Chapman for the report) that may have caused some threading oddities. - Tweaked support for out and ref parameters. If a method has a return type of void and a single ref or out parameter, that parameter will be returned as the result of the method. This matches the current behavior of IronPython and makes it more likely that code can be moved between Python for .NET and IP in the future. - Refactored part of the assembly manager to remove a potential case of thread-deadlock in multi-threaded applications. - Added a __str__ method to managed exceptions that returns the Message attribute of the exception and the StackTrace (if available). Thanks to all who have sent in issue reports, patches and suggestions for this and past releases. Enjoy! ;) Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

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ANNOUNCE: Python for .NET beta 5 now available
by Brian Lloyd June 3, 2005

June 3, 2005

Python for .NET 1.0 beta 5 is now available - you can download it from: http://www.zope.org/Members/Brian/PythonNet/ Python for .NET is a near-seamless integration of Python with the .NET common language runtime. For more details, see the README: http://www.zope.org/Members/Brian/PythonNet/README.html The beta 5 release features a refactoring of thread management support, making the runtime stable for multi-threaded applications, as well as several improvements and bug-fixes. Special thanks to all who sent in thread-related scenarios and test cases! I have tried to incorporate as many of these as possible into the unit tests - if you still have problems that you suspect may be related to threading or interpreter lock issues, please let me know asap. There is also now a mailing list for discussion, questions and issues related to Python for .NET at: pythondotnet(a)python.org. To subscribe to the mailing list or read the online archives, see: http://mail.python.org/mailman/listinfo/pythondotnet Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com

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ListView bug?
by Guy Robinson June 2, 2005

June 2, 2005

Find attached script for a windows.Form. Is this a bug? When loading the data into the listview from a list of tuples: data = [("one","test one"),("two","test two"), ("three","test three")] for item in data: temp = WF.ListViewItem(item[0]) temp.SubItems.Add(item[1]) self.listView.Items.Add(temp) The rows are filled with the first and second characters of the first string rather than the relevant tuple strings. Winforms is pretty cool otherwise. Guy import CLR from CLR import System import CLR.System.Windows.Forms as WF from CLR.System.Drawing import Size, Point, Color class ScriptForm(WF.Form): """A simple hello world app that demonstrates the essentials of WF programming and event-based programming in Python.""" def __init__(self): self.Text = "Python scripting for the Revit API" #self.AutoScaleBaseSize = Size(5, 13) self.ClientSize = Size(500, 300) h = WF.SystemInformation.CaptionHeight self.MinimumSize = Size(300, (100 + h)) self.FormBorderStyle = WF.FormBorderStyle.FixedDialog self.MinimizeBox = False self.MaximizeBox = False self.StartPosition = WF.FormStartPosition.CenterScreen self.components = System.ComponentModel.Container() # Create the ListView self.listView = WF.ListView() self.listView.Location = Point(5,5) self.listView.Width = 370 self.listView.Height = self.ClientSize.Height-10 self.listView.TabIndex = 0 self.formatLV() self.loaddata() # Create the run button self.runBut = WF.Button() self.runBut.Location = Point(400, 100) self.runBut.BackColor = Color.GreenYellow self.runBut.TabIndex = 1 self.runBut.Text = "Run Script" # Create the Cancel button self.CanBut = WF.Button() self.CanBut.Location = Point(400, 150) self.CanBut.TabIndex = 2 self.CanBut.Text = "Cancel" # Register the event handlers self.runBut.Click += self.runScript_Click self.CanBut.Click += self.Cancel_Click # Add the controls to the form self.Controls.Add(self.listView) self.Controls.Add(self.runBut) self.Controls.Add(self.CanBut) def runScript_Click(self, sender, args): """ Get and Run the selected script""" WF.MessageBox.Show("Run script") #return "script" def Cancel_Click(self, sender, args): """Cancel don't run anything""" #return "cancel" self.components.Dispose() WF.Form.Dispose(self) self.Close() def formatLV(self): self.listView.View = WF.View.Details self.listView.LabelEdit = False self.listView.AllowColumnReorder = False self.listView.GridLines = True self.listView.FullRowSelect = True self.listView.Sorting = WF.SortOrder.Ascending #now do columns self.listView.Columns.Add("Script Name", 100,WF.HorizontalAlignment.Left) self.listView.Columns.Add("Description", 266,WF.HorizontalAlignment.Left) def loaddata(self): data = [("one","test one"),("two","test two"), ("three","test three")] for item in data: temp = WF.ListViewItem(item[0]) temp.SubItems.Add(item[1]) self.listView.Items.Add(temp) def run(self): WF.Application.Run(self) self.components.Dispose() WF.Form.Dispose(self) self.Close() def main(): ScriptForm().run() if __name__ == '__main__': main()

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