Python.NET March 2007

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10 participants
8 discussions

app.config file equivalent location?
by Andy Smith 15 Mar '07

15 Mar '07

I'm trying to use some third party assemblies that pull their config out of the application config file. In VS.NET land this would be taken care of by the app.config which would create an appropriate appname.exe.config file in the bin directory for the build. In trying to mirror this behaviour I've naively tried adding c:/Python23/python.exe.config in the python build directory since strictly this is the exe that's being run. It's very dubious and doesn't seem to work. Is there a way to programatically tweak this? Cheers, A.

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Simple newbie constructor problem :-(
by Andy Smith 09 Mar '07

09 Mar '07

Hi There, Just getting started - absolute (as of today) newbee.. Seem to be able to load my own assemblies but seem to get stuck passing arguments to my own objects' constructors. Example below................. (using the sourceforge build, have 'added' python .net to the Enthon 2.3 distribution). Code below is being run as-is but the astute will have figured out I don't work for ACME. :-) Have seen similar bugs mentioned in the mailing list but I'd have thought I had to be doing something very wrong for a constructor taking a System.String to be failing :-( So far I've tried calling the Constructor with an unwrapped python string, a System.String, and the constructor taking a String, Uri pair. ( In the hope this would resolve to a specific constructor - no joy! :-( ). Any help appreciated. Cheers, A. ======================================= import sys sys.path.insert( 0, "c:/home/dev/MarketSampler.root/MarketSampler/MarketSampler/MarketSampler/bin/Debug" ) import CLR from CLR.System.Reflection import Assembly from CLR.System import String from CLR.System import Environment as Environment from CLR.System import Uri as Uri a = Assembly.LoadWithPartialName("IntradayPortfolioBuilder") a = Assembly.LoadWithPartialName("MarketSampler") a = Assembly.LoadWithPartialName("ObjectRestorer") a = Assembly.LoadWithPartialName ("Scheduler") import CLR.ACME.IntradayPortfolioBuilder.Exchange as Exchange from CLR.ACME.ObjectRestorer import XmlObjectRestorer as XmlObjectRestorer import CLR.MarketSampler.IntradayBacktesting as IntradayBacktesting import CLR.ACME.Scheduler as Scheduler #IntradayBacktesting.MultiInstrumentTrader() c = Scheduler.Choreographer() XmlObjectRestorer( String("c:/temp/jobs.txt") ) ==================================================== Traceback is .... Python 2.3.5 - Enthought Edition 0.9.9 (#62, Sep 14 2006, 19:20:46) [MSC v.1200 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> ## working on region in file c:/DOCUME~1/andys/LOCALS~1/Temp/python- 3752fom.py... Traceback (most recent call last): File "<stdin>", line 1, in ? File "c:/DOCUME~1/andys/LOCALS~1/Temp/python- 3752fom.py", line 23, in ? XmlObjectRestorer( String("c:/temp/jobs.txt") ) TypeError: no constructor matches given arguments >>> print XmlObjectRestorer.__doc__ Void .ctor(System.IO.TextReader ) Void .ctor(System.IO.TextReader, System.Uri) Void .ctor(System.String) Void .ctor(System.String, System.Uri)

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Problem with DateTimePicker control
by Peter Schwalm 07 Mar '07

07 Mar '07

Hi, I have problems setting the Value of a DateTimePicker control of Windows Forms. The Value property *is* set (I can print it), but if displayed only the current date is shown in the control, not the value I have set the Value property set to before. The python version is 2.3, the .net versions tested are 1.1 and 2.0. Here are some code snippets: #----------------------------------------------------------------------- def dt2SysDt(dtFrom, incr = 0): #----------------------------------------------------------------------- "python date/dateTime in .net-DateTime(Date) umwandeln" return (System.DateTime(dtFrom.year, dtFrom.month, dtFrom.day) .AddDays(incr)) #----------------------------------------------------------------------- def sysDt2Dt(dtFrom, incr = 0): #----------------------------------------------------------------------- ".net-DateTime(Date) in python dateTime.date umwandeln" dtFrom = dtFrom.AddDays(incr) rv = datetime.date(dtFrom.Year, dtFrom.Month, dtFrom.Day) #print "sysDt2Dt=", rv return rv .... # set the value self.dtpErzeugtVon.Value = dt2SysDt(src.dtErzeugtAb) # display the values of dtp's for ctl in (self.dtpErzeugtVon, self.dtpErzeugtBis, self.dtpVersendetVon, self.dtpVersendetBis): print "dtp...=", ctl.Name, ctl.Value, sysDt2Dt(ctl.Value) # the print statement shows the following ... dtp...= dtpErzeugtBis 31.03.2007 00:00:00 2007-03-31 ... When the form is shown with ShowDialog(), only the current date is show (march 7 instead of march 31). Does anyone have an idea? Thanks Peter Schwalm

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RunString does not work
by Seshagiri Cherukuri 05 Mar '07

05 Mar '07

hi All, I have embedded pythonnet into my C# application and this works great as far as creating .net objects from python, executing methods etc. Here I am using the RunSimpleString (the PyRun_SimpleString) wrapper to send commands from the C# application to the pythonnet. However I am facing the following problems: 1. After RunSimpleString, PyErr_Occurred or PyErr_Fetch are not able to detect any exceptions even if they did occur - for example, consider the code - curErr = PythonEngine.RunSimpleString( "10/0\n"); - this code does return a -1 value indicating error. - however after this none of PyErr_Occurred or PyErr_Fetch do not detect this error - from python documentation it looks like there is no way to obtain the exception information 2. using RunString - because of above problem I want to send a multi-line code including a try-except: block - I have tried using RunString with all the three modes - Py_eval_input, Py_single_input and Py_file_input - The RunString works only if the code does not have any .net objects or does not include any .net exceptions - If the code sent to RunString includes a .net object e.g. obj, then RunString always returns in NameError, obj is not defined 3. Strangely, if I run the console application, it is able to work with .net exceptions - both .net and user defined exceptions 4. Is this because of the new dictionary created while in RunString? thanks Sesh Cherukuri

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unsubscribe
by andy.bu＠kodak.com 04 Mar '07

04 Mar '07

Best Regards, ============================== Kodak Health Group Global R&D Center (Shanghai) No. 27 Xin Jinqiao Road Building 4 Jinqiao Software Park, Shanghai, P.R.China 201206 Tel :8621-50308810-5374 Mail : Andy.bu(a)Kodak.com Building 4, Jinqiao Software Park, Shanghai 201206 ============================== pythondotnet-request(a)python.org Sent by: pythondotnet-bounces(a)python.org 03/04/2007 07:00 PM Please respond to pythondotnet(a)python.org To pythondotnet(a)python.org cc Subject PythonDotNet Digest, Vol 41, Issue 4 Send PythonDotNet mailing list submissions to pythondotnet(a)python.org To subscribe or unsubscribe via the World Wide Web, visit http://mail.python.org/mailman/listinfo/pythondotnet or, via email, send a message with subject or body 'help' to pythondotnet-request(a)python.org You can reach the person managing the list at pythondotnet-owner(a)python.org When replying, please edit your Subject line so it is more specific than "Re: Contents of PythonDotNet digest..." Today's Topics: 1. RunString does not work (Seshagiri Cherukuri) ---------------------------------------------------------------------- Message: 1 Date: Sun, 4 Mar 2007 01:37:52 -0800 From: "Seshagiri Cherukuri" <seshagiri.cherukuri(a)gmail.com> Subject: [Python.NET] RunString does not work To: pythondotnet(a)python.org Message-ID: <8d12fba0703040137s728f6848vb061a602472c9490(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" hi All, I have embedded pythonnet into my C# application and this works great as far as creating .net objects from python, executing methods etc. Here I am using the RunSimpleString (the PyRun_SimpleString) wrapper to send commands from the C# application to the pythonnet. However I am facing the following problems: 1. After RunSimpleString, PyErr_Occurred or PyErr_Fetch are not able to detect any exceptions even if they did occur - for example, consider the code - curErr = PythonEngine.RunSimpleString( "10/0\n"); - this code does return a -1 value indicating error. - however after this none of PyErr_Occurred or PyErr_Fetch do not detect this error - from python documentation it looks like there is no way to obtain the exception information 2. using RunString - because of above problem I want to send a multi-line code including a try-except: block - I have tried using RunString with all the three modes - Py_eval_input, Py_single_input and Py_file_input - The RunString works only if the code does not have any .net objects or does not include any .net exceptions - If the code sent to RunString includes a .net object e.g. obj, then RunString always returns in NameError, obj is not defined 3. Strangely, if I run the console application, it is able to work with .net exceptions - both .net and user defined exceptions 4. Is this because of the new dictionary created while in RunString? thanks Sesh Cherukuri

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Re: [Python.NET] RunString does not work
by J. Merrill 04 Mar '07

04 Mar '07

Without any specific reference to Python.Net or C#, my experience has been that cross-process or cross-language calling is made easier by defining a routine on the receiving side that accepts parameters of a string to be run and an indication of whether a return value is desired. The called routine sets up its own try/except block, and runs the string. The return value is a tuple of two values: a boolean indicating whether an error occurred and data. If the boolean indicates failure, the data is the error message as a string or, if you want, a more complex value with error message and execution state information. If the boolean indicates success, the data is the result of running the string if requested or an empty value. (Avoiding sending a potentially large value back as a result is an optimization in the case where the caller doesn't need it.) When you do this, you can use all the power of the called environment to do error-handling in a routine that's written once and re-used. Good luck. At 04:37 AM 3/4/2007, Seshagiri Cherukuri wrote >hi All, > >I have embedded pythonnet into my C# application and this works great as far as creating .net objects from python, executing methods etc. >Here I am using the RunSimpleString (the PyRun_SimpleString) wrapper to send commands from the C# application to the pythonnet. > >However I am facing the following problems: > >1. After RunSimpleString, PyErr_Occurred or PyErr_Fetch are not able to detect any exceptions even if they did occur >- for example, consider the code - curErr = PythonEngine.RunSimpleString("10/0\n" ); >- this code does return a -1 value indicating error. >- however after this none of PyErr_Occurred or PyErr_Fetch do not detect this error >- from python documentation it looks like there is no way to obtain the exception information > >2. using RunString >- because of above problem I want to send a multi-line code including a try-except: block >- I have tried using RunString with all the three modes - Py_eval_input, Py_single_input and Py_file_input >- The RunString works only if the code does not have any .net objects or does not include any .net exceptions >- If the code sent to RunString includes a .net object e.g. obj, then RunString always returns in NameError, obj is not defined > >3. Strangely, if I run the console application, it is able to work with .net exceptions - both .net and user defined exceptions > >4. Is this because of the new dictionary created while in RunString? > >thanks > >Sesh Cherukuri J. Merrill / Analytical Software Corp

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Using Third Party C# Libraries
by angel ignacio colmenares laguado 03 Mar '07

03 Mar '07

for Python.NET support for .NET 2.0: 1. Download de latest source from http://pythonnet.svn.sourceforge.net/viewvc/pythonnet/trunk/ (you can use Tortoise SVN in win*) 2. change in importhook.cs : line 25 static *Clr*Module clr; with static *clr*Module clr; line 50 clr = new *Clr*Module("clr"); with clr = new *clr*Module(); line 51 Runtime.PyDict_SetItemString(dict, "clr", *clr*.pyHandle); with Runtime.PyDict_SetItemString(dict, "clr", *root*.pyHandle); line 111: Runtime.Incref(*clr*.pyHandle); with Runtime.Incref(*root*.pyHandle); line 112: return *clr*.pyHandle; with return *root*.pyHandle; 3. Change makefile with this: ILDASM=ildasm.exe ILASM=/c/WINDOWS/Microsoft.NET/Framework/v2.0.50727/ilasm.exe CSC=/c/WINDOWS/Microsoft.NET/Framework/v2.0.50727/csc.exe all: python.exe python.exe: Python.Runtime.dll cd src; cd console; \ $(CSC) -nologo -target:exe -out:../../python.exe \ -reference:../../Python.Runtime.dll -recurse:*.cs cd ..; cd ..; Python.Runtime.dll:clr.dll cd src; cd runtime; \ $(CSC) -nologo -unsafe -target:library -out:../../Python.Runtime.dll \ -reference:clr.dll \ * -recurse:*.cs cd ..; cd ..; *clr.dll: $(ILASM) -nologo -dll -quiet -output=clr.dll \ ./src/runtime/clrmodule.il; 4. using Mingw32 (msys) execute: makefile you get :Python.Runtime.dll, clr.dll and pyton.exe ready for net 2.0 5. put Python.Runtime.dll and crl.dll in your python24 directory. 6. you can get ready binaries (Python.Runtime.dll , clr.dll and pyton.exe) for Net 2.0 from : http://angel.ignacio.colmenares.googlepages.com/pythonnet 7. Some screenshots in : http://angel.ignacio.colmenares.googlepages.com/pythonnet* <http://angel.ignacio.colmenares.googlepages.com/pythonnet>* angel ignacio colmenares laguado

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Re: [Python.NET] PythonDotNet Digest, Vol 41, Issue 1
by Philippe C. Martin 02 Mar '07

02 Mar '07

1) do what you want 2) stick to your word 3) let him breathe 4) keep me out of this On Friday 2 March 2007 12:00, pythondotnet-request(a)python.org wrote: > Send PythonDotNet mailing list submissions to > pythondotnet(a)python.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.python.org/mailman/listinfo/pythondotnet > or, via email, send a message with subject or body 'help' to > pythondotnet-request(a)python.org > > You can reach the person managing the list at > pythondotnet-owner(a)python.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of PythonDotNet digest..." > > > Today's Topics: > > 1. Re: Using Third Party C# Libraries (Jim Hargrave) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 01 Mar 2007 23:32:44 -0700 > From: Jim Hargrave <jhargraveiii(a)comcast.net> > Subject: Re: [Python.NET] Using Third Party C# Libraries > To: pythondotnet(a)python.org > Message-ID: <es8ged$jt3$1(a)sea.gmane.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I installed the Python.Net for 2.0 (pre-compiles binaries) from the link > > below. But I am unable to get this working: > >>> import clr # this works > >>> clr.AddReference("System.Windows.Forms") > > Traceback (most recent call last): > File "<input>", line 1, in ? > AttributeError: AddReference > > According to the readme file this is supposed to work and matches up > with the IronPython syntax. Am I doing something wrong? > > I copied the Python.Net for 2.0 binaries over my Python 2.4 install > (overwriting my python.exe). > > All sample Python.NET files worked fine - but they use the old "CLR" > syntax. > > Jim > > angel ignacio colmenares laguado wrote: > > for Python.NET support for .NET 2.0: > > > > 1. Download de latest source from > > http://pythonnet.svn.sourceforge.net/viewvc/pythonnet/trunk/ > > > > > > (you can use Tortoise SVN in win*) > > > > 2. change in importhook.cs : > > > > line 25 > > static *Clr*Module clr; with static *clr*Module clr; > > > > > > line 50 > > clr = new *Clr*Module("clr"); with clr = new > > *clr*Module(); > > > > line 51 > > > > Runtime.PyDict_SetItemString(dict, "clr", *clr*.pyHandle); > > with > > Runtime.PyDict_SetItemString > > (dict, "clr", *root*.pyHandle); > > > > > > line 111: > > > > Runtime.Incref(*clr*.pyHandle); > > with > > Runtime.Incref(*root*.pyHandle); > > > > > > line 112: > > return *clr*.pyHandle; > > > > with > > return *root*.pyHandle; > > > > > > 3. Change makefile with this: > > > > > > ILDASM=ildasm.exe > > ILASM=/c/WINDOWS/Microsoft.NET/Framework/v2.0.50727/ilasm.exe > > CSC=/c/WINDOWS/Microsoft.NET/Framework/v2.0.50727/csc.exe > > > > > > all: python.exe > > > > python.exe: Python.Runtime.dll > > cd src; cd console; \ > > > > $(CSC) -nologo -target:exe -out:../../python.exe \ > > -reference:../../Python.Runtime.dll -recurse:*.cs > > cd ..; cd ..; > > > > > > > > Python.Runtime.dll:clr.dll > > cd src; cd runtime; \ > > $(CSC) -nologo -unsafe -target:library -out:../../Python.Runtime.dll \ > > > > -reference:clr.dll \ > > / -recurse:*.cs > > cd ..; cd ..; > > > > > > /clr.dll: > > $(ILASM) -nologo -dll -quiet -output=clr.dll \ > > ./src/runtime/clrmodule.il; > > > > > > > > 4. using Mingw32 (msys) execute: > > > > makefile > > > > > > you get :Python.Runtime.dll, clr.dll and pyton.exe > > ready for net 2.0 > > > > > > 5. put Python.Runtime.dll and crl.dll in your python24 directory. > > > > > > 6. you can get ready binaries (Python.Runtime.dll > > , clr.dll and pyton.exe) for Net 2.0 from : > > > > http://angel.ignacio.colmenares.googlepages.com/pythonnet > > > > 7. Some screenshots in : > > > > http://angel.ignacio.colmenares.googlepages.com/pythonnet/ > > <http://angel.ignacio.colmenares.googlepages.com/pythonnet>/ > > > > > > angel ignacio colmenares laguado > > > > > > ------------------------------------------------------------------------ > > > > _________________________________________________ > > Python.NET mailing list - PythonDotNet(a)python.org > > http://mail.python.org/mailman/listinfo/pythondotnet > > ------------------------------ > > _______________________________________________ > PythonDotNet mailing list > PythonDotNet(a)python.org > http://mail.python.org/mailman/listinfo/pythondotnet > > > End of PythonDotNet Digest, Vol 41, Issue 1 > ******************************************* -- _________________________ Philippe C. Martin +1 405 562 7005 www.snakecard.com _________________________

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Python.NET March 2007