Python.NET February 2005

pythonnet@python.org

14 participants
14 discussions

RE: Python for .NET, multithreading case.
by Duong, Thuy 24 Feb '05

24 Feb '05

Hi Brian, Sorry for the late reply. I've attached the Python script (_M4.py) which invokes the .NET DLL. Basically, the following happens: 1) Create a "main" thread called: Main Thread 2) Main Thread can successfully invoke the function: GetOne() in our .NET DLL. GetOne() simply prints: "Entering the C# static function GetOne()" and returns "1". 3) Main Thread now spawns a child thread: Child Thread 4) Child Thread unsuccessfully invokes the .NET DLL. When we wrote to the console, we see Child Thread entering into GetOne() but the control never returns back to Child Thread after that. Below is the actual console print out when I ran the script. ===> D:\PythonNet-1.0-beta4>python _m4.py Entering the C# static function GetOne() Main Thread - GetOne() 1 ######init MessageRouter ######run MessageRouter - Child Thread Child Thread starts Entering the C# static function GetOne() ===> Thanks for looking into this. -thuy -----Original Message----- From: Brian Lloyd To: Duong, Thuy; pythondotnet(a)python.org Cc: vantuando(a)computer.org; Smith, Daniel Sent: 2/22/2005 10:16 AM Subject: RE: Python for .NET, multithreading case. If you can post (or email me directly) the Python code that you use to create the threads, that would help me in making a test case (just to make sure any subtle differences aren't lost...) -Thanks Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com > -----Original Message----- > From: Duong, Thuy [mailto:tduong@alarismed.com] > Sent: Tuesday, February 22, 2005 12:50 PM > To: Brian Lloyd; pythondotnet(a)python.org > Cc: vantuando(a)computer.org; Smith, Daniel > Subject: RE: Python for .NET, multithreading case. > > Hi Brian, > > Thanks for getting back to us so promptly! > > The threads (ThreadA and Threadaa) are created from Python and invoke > the .NET DLL. > > Pls. let us know if you need any additional information. > > Thanks. > > -thuy > > -----Original Message----- > From: Brian Lloyd [mailto:brian@zope.com] > Sent: Tuesday, February 22, 2005 6:39 AM > To: Duong, Thuy; pythondotnet(a)python.org > Cc: Smith, Don S. (ALARIS); vantuando(a)computer.org > Subject: RE: Python for .NET, multithreading case. > > > Just to clarify - are you creating these threads from > Python or from managed code? > > > Brian Lloyd brian(a)zope.com > V.P. Engineering 540.361.1716 > Zope Corporation http://www.zope.com > > > > -----Original Message----- > > From: Duong, Thuy [mailto:tduong@alarismed.com] > > Sent: Saturday, February 19, 2005 6:29 PM > > To: pythondotnet(a)python.org; brian(a)zope.com > > Cc: Smith, Don S. (ALARIS); vantuando(a)computer.org > > Subject: Python for .NET, multithreading case. > > > > > > Hi Brian, > > > > We've been using Python for .NET and it's been working pretty > > well interacting > > with a .NET DLL. However, we've encountered some problems with > > this multithreading > > scenario: > > > > 1) Create a "main" thread called: ThreadA > > 2) ThreadA can successfully invoke our .NET DLL. > > 3) ThreadA now spawns a child thread: Threadaa > > 4) Threadaa unsuccessfully invokes the .NET DLL. > > When we wrote to the console, we see Threadaa invoke the > .NET DLL but > > the control never returns back to Threadaa after the .NET DLL call. > > > > Do you have any thoughts on this and do you have any suggestions? > > Thanks in advance for your help! > > > > > > Regards, > > > > Thuy Duong > > >

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RE: Python for .NET, multithreading case.
by Duong, Thuy 22 Feb '05

22 Feb '05

Hi Brian, Thanks for getting back to us so promptly! The threads (ThreadA and Threadaa) are created from Python and invoke the .NET DLL. Pls. let us know if you need any additional information. Thanks. -thuy -----Original Message----- From: Brian Lloyd [mailto:brian@zope.com] Sent: Tuesday, February 22, 2005 6:39 AM To: Duong, Thuy; pythondotnet(a)python.org Cc: Smith, Don S. (ALARIS); vantuando(a)computer.org Subject: RE: Python for .NET, multithreading case. Just to clarify - are you creating these threads from Python or from managed code? Brian Lloyd brian(a)zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com > -----Original Message----- > From: Duong, Thuy [mailto:tduong@alarismed.com] > Sent: Saturday, February 19, 2005 6:29 PM > To: pythondotnet(a)python.org; brian(a)zope.com > Cc: Smith, Don S. (ALARIS); vantuando(a)computer.org > Subject: Python for .NET, multithreading case. > > > Hi Brian, > > We've been using Python for .NET and it's been working pretty > well interacting > with a .NET DLL. However, we've encountered some problems with > this multithreading > scenario: > > 1) Create a "main" thread called: ThreadA > 2) ThreadA can successfully invoke our .NET DLL. > 3) ThreadA now spawns a child thread: Threadaa > 4) Threadaa unsuccessfully invokes the .NET DLL. > When we wrote to the console, we see Threadaa invoke the .NET DLL but > the control never returns back to Threadaa after the .NET DLL call. > > Do you have any thoughts on this and do you have any suggestions? > Thanks in advance for your help! > > > Regards, > > Thuy Duong >

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Python for .NET, multithreading case.
by Duong, Thuy 22 Feb '05

22 Feb '05

Hi Brian, We've been using Python for .NET and it's been working pretty well interacting with a .NET DLL. However, we've encountered some problems with this multithreading scenario: 1) Create a "main" thread called: ThreadA 2) ThreadA can successfully invoke our .NET DLL. 3) ThreadA now spawns a child thread: Threadaa 4) Threadaa unsuccessfully invokes the .NET DLL. When we wrote to the console, we see Threadaa invoke the .NET DLL but the control never returns back to Threadaa after the .NET DLL call. Do you have any thoughts on this and do you have any suggestions? Thanks in advance for your help! Regards, Thuy Duong

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Zope
by bksasha＠zahav.net.il 13 Feb '05

13 Feb '05

Greetings Does enayone have a good experionce of using Python .NET with Zope? Thanks Alexander

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Loss of import hook?
by JONES, Michael, FM Quantitative Research 11 Feb '05

11 Feb '05

Hello, I've just unzipped Python.Net, and copied the two DLLs to my c:\Python24 ActivePython install directory, but if I first import CLR on it's own, then python seems to lose its import hook? ActivePython 2.4 Build 243 (ActiveState Corp.) based on Python 2.4 (#60, Nov 30 2004, 09:34:21) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import CLR >>> from CLR.System.Reflection import Assembly Traceback (most recent call last): File "<stdin>", line 1, in ? ImportError: __import__ not found >>> If on the other hand I don't import CLR to begin with then it takes two attempts to import a module: ActivePython 2.4 Build 243 (ActiveState Corp.) based on Python 2.4 (#60, Nov 30 2004, 09:34:21) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from CLR.System.Reflection import Assembly Traceback (most recent call last): File "<stdin>", line 1, in ? ImportError: No module named System.Reflection >>> from CLR.System.Reflection import Assembly >>> What am I doing wrong? Thanks, Michael *********************************************************************************** The Royal Bank of Scotland plc. Registered in Scotland No 90312. Registered Office: 36 St Andrew Square, Edinburgh EH2 2YB. Authorised and regulated by the Financial Services Authority This e-mail message is confidential and for use by the addressee only. If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer. Internet e-mails are not necessarily secure. The Royal Bank of Scotland plc does not accept responsibility for changes made to this message after it was sent. Whilst all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by The Royal Bank of Scotland plc in this regard and the recipient should carry out such virus and other checks as it considers appropriate. Visit our websites at: http://www.rbs.co.uk/CBFM http://www.rbsmarkets.com ********************************************************************************

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Sample embedding code?
by Mark Anderson 11 Feb '05

11 Feb '05

Hi all ; I'm a total neophyte at this, and am hoping to avoid a lot of time consuming experimentation. I've got an existing VB.NET app which I'd like to make scriptable using Python for .NET. The app is a client server thing where a fat client calls a bunch of webmethods. If anyone can post or point me to some example / template code which illustrates the necessary steps, it'd reallly help me out. Thanks, Mark Anderson

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PythonNet VS IronPython ?
by Simon Roses Femerling 10 Feb '05

10 Feb '05

I have just come across pythonNet and looks very nice! Can somebody tell me the differences between PythonNet and IronPython, besides Net support? Note a part: Any good examples of embedding PythonNet on c# app ? :) Thx, Sincerely, Simon Roses Femerling Consultor en Seguridad / IT Security Consultant IT Deusto http://www.itdeusto.com Madrid, Spain

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PythonNet VS IronPython ?
by Simon Roses Femerling 10 Feb '05

10 Feb '05

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.NET character and byte
by Edward Diener 08 Feb '05

08 Feb '05

What is the Python equivalent to the .NET 'char' and 'byte' types ? I need to pass in an array of bytes to a .NET constructor and when I attempted to pass in a list of strings of single characters, it failed. Is there a way of doing this in PythonDotNet ?

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managed exception stack trace.
by Stan Pinte 08 Feb '05

08 Feb '05

hello, I am using pythonNet with a great pleasure, thanks a lot for that piece of work. IMHO, a wiki would be very very useful for this project, as I would be ready to contribute... One question: How do I print out managed exceptions full stack trace? thanks, Stan.

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Python.NET February 2005