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New user small problem
by Zer033
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Hi, I am new to using swig and I encountered a problem while trying to get a small example project put together.
I am trying to figure out how to use C++ function in python using swig, but I can't seem to get it working. The problem is when I try to compile I get some errors. I followed the tutorial for setting up a Microsoft Visual Studio Project here: http://www.dabeaz.com/cgi-bin/wiki.pl?SwigFaqDLLForWindows I'm using VS 2005. I pretty much just wanted to duplicate the example from here: http://www.swig.org/tutorial.html The code in that tutorial is the code I used for the C++ function/header and the example.i that are in my project. I next downloaded Swig from sourceforge the swigwin. I unzipped it. I put the swig.exe in my project folder and tried to compile my project. I get a bunch of "swig errors" of "Unrecognized option" this and that. Here is the exact errors: ------ Build started: Project: interfaceDLLexample, Configuration: Debug Win32 ------ SWIG swig error : Unrecognized option and swig error : Unrecognized option Settings\Blake swig error : Unrecognized option Nicholas\Desktop\interfaceDLLexample\\interfaceDLLexample swig error : Unrecognized option c:\Documents swig error : Unrecognized option and swig error : Unrecognized option Settings\Blake Use 'swig -help' for available options. Project : error PRJ0019: A tool returned an error code from "SWIG" Build log was saved at "file://c:\Documents and Settings\Blake Nicholas\Desktop\interfaceDLLexample\interfaceDLLexample\Debug\BuildLog.htm" interfaceDLLexample - 1 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== I am a newbie with swig. This is probably a pretty easy problem, but I can't really get it and I've tried a few different things. Any other suggestions on setting something like this up that differ from the tutorials above would be great. I don't need to do anything fancy right now I just want to get a simple example module working in python like this example, and if I made any really newbie mistakes please let me know. The solution can be downloaded here if anyone wants to see the project settings I have. http://www.megaupload.com/?d=SEL82U2Q Thanks. |
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Re: New user small problem
by nitro-4
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Am 29.11.2007, 12:15 Uhr, schrieb Zer033 <spband33@...>:
> > Hi, I am new to using swig and I encountered a problem while trying to > get a > small example project put together. > > I am trying to figure out how to use C++ function in python using swig, > but > I can't seem to get it working. The problem is when I try to compile I > get > some errors. The errors look like you didn't put all filenames with spaces in quotes. -Matthias ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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Re: New user small problem
by Christopher Barker
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This looks like you're having trouble with running SWIG itself, not yet
with compiling the results. I think another poster has suggested a fix. However, when you do get to the compiling stage, I highly recommend that you use distutils and a setup.py file to compile the extension , it is by far the easiest way to compile python extensions. I recently added directions to the SWIG docs. I don't know that they've made it to the released version, but you can find them in svn here: http://swig.svn.sourceforge.net/viewvc/*checkout*/swig/trunk/Doc/Manual/Python.html -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@... ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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Re: New user small problem
by wsfulton
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Nitro wrote:
> Am 29.11.2007, 12:15 Uhr, schrieb Zer033 <spband33@...>: > > > Hi, I am new to using swig and I encountered a problem while trying to > > get a > > small example project put together. > > > > I am trying to figure out how to use C++ function in python using > swig, > > but > > I can't seem to get it working. The problem is when I try to > compile I > > get > > some errors. > > The errors look like you didn't put all filenames with spaces in quotes. > Also, open up the Visual Studio project files in the Examples/python directory. They work straight off, if you set the env variables as outlined in http://www.swig.org/Doc1.3/Windows.html#Windows_visual_studio. William ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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Re: New user small problem
by Zer033
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Chris, I think that is the problem. What is it I'm supposed to do with the "swigwin-1.3.33" folder in relation to my VS solution. I can't find any specific steps concerning that. I did set the python environmental variables though and that seems to be okay. Also to the above poster about the Examples/python things working after setting environmental variables that didn't work for me either. I think it is related to me just not installing or incorporating swig folder properly with my solution. |
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Re: New user small problem
by Zer033
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Oh forgot to mention here is the new errors so I think it does have something to do with how I am trying to incorporate the swig folder with my VS Solution. Generating Code... Compiling manifest to resources... Linking... LINK : _example.pyd not found or not built by the last incremental link; performing full link Embedding manifest... SWIG (1): Error: Unable to find 'swig.swg' (3): Error: Unable to find 'python.swg' Project : error PRJ0019: A tool returned an error code from "SWIG" Build log was saved at "file://c:\Documents and Settings\Blake Nicholas\Desktop\interfaceDLLexample\interfaceDLLexample\Debug\BuildLog.htm" interfaceDLLexample - 1 error(s), 1 warning(s) ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ========== Thanks for the help so far. |
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Re: New user small problem
by wsfulton
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Zer033 wrote:
> > > Zer033 wrote: >> >> >> Christopher Barker wrote: >>> This looks like you're having trouble with running SWIG itself, not yet >>> with compiling the results. I think another poster has suggested a fix. >>> >>> However, when you do get to the compiling stage, I highly recommend that >>> you use distutils and a setup.py file to compile the extension , it is >>> by far the easiest way to compile python extensions. >>> >>> I recently added directions to the SWIG docs. I don't know that they've >>> made it to the released version, but you can find them in svn here: >>> >>> http://swig.svn.sourceforge.net/viewvc/*checkout*/swig/trunk/Doc/Manual/Python.html >>> >>> -Chris >>> >>> >>> -- >>> Christopher Barker, Ph.D. >>> Oceanographer >>> >>> Emergency Response Division >>> NOAA/NOS/OR&R (206) 526-6959 voice >>> 7600 Sand Point Way NE (206) 526-6329 fax >>> Seattle, WA 98115 (206) 526-6317 main reception >>> >>> Chris.Barker@... >>> >>> ------------------------------------------------------------------------- >>> SF.Net email is sponsored by: The Future of Linux Business White Paper >>> from Novell. From the desktop to the data center, Linux is going >>> mainstream. Let it simplify your IT future. >>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 >>> _______________________________________________ >>> Swig-user mailing list >>> Swig-user@... >>> https://lists.sourceforge.net/lists/listinfo/swig-user >>> >>> >> Chris, >> I think that is the problem. What is it I'm supposed to do with the >> "swigwin-1.3.33" folder in relation to my VS solution. I can't find any >> specific steps concerning that. I did set the python environmental >> variables though and that seems to be okay. >> >> Also to the above poster about the Examples/python things working after >> setting environmental variables that didn't work for me either. I think >> it is related to me just not installing or incorporating swig folder >> properly with my solution. >> > > Oh forgot to mention here is the new errors so I think it does have > something to do with how I am trying to incorporate the swig folder with my > VS Solution. > > Generating Code... > Compiling manifest to resources... > Linking... > LINK : _example.pyd not found or not built by the last incremental link; > performing full link > Embedding manifest... > SWIG > (1): Error: Unable to find 'swig.swg' > (3): Error: Unable to find 'python.swg' > Project : error PRJ0019: A tool returned an error code from "SWIG" > Build log was saved at "file://c:\Documents and Settings\Blake > Nicholas\Desktop\interfaceDLLexample\interfaceDLLexample\Debug\BuildLog.htm" > interfaceDLLexample - 1 error(s), 1 warning(s) The 2 errors above occur when the SWIG_LIB environment variable is not set correctly. However, for Windows, if you are using the executable supplied in swig.exe, you don't need to set this environment variable unless you have messed around with the location of swig.exe. Basically if you just unzip swigwin-1.3.33.zip (see comment in the zip file), set the target language environment variables as described in Windows.html and then open up the example visual studio solution files, the examples will just work. William ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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Re: New user small problem
by Zer033
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What is the environmental variable I have to set exactly and then what option in my VS solution do I put it under. Is it just an environmental variable for the swig root folder? Then after that in the VS solution settings where is it that I include it. |
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Re: New user small problem
by Christopher Barker
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Zer033 wrote:
> Chris, > I think that is the problem. What is it I'm supposed to do with the > "swigwin-1.3.33" folder in relation to my VS solution. What I was suggesting does not involve the VS GUI at all -- strictly command line: swig --python MyFile.i python setup.py build_ext If you're still working on your C/C++ code in VS, then I suppose it makes sense to figure out out to use the Provided solution. But you might want to see if it works on the command-line as a way to test, anyway. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@... ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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Re: New user small problem
by Zer033
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I got it all to compile and the new files added to the VS solution folder were: example.py, _example.exp, _example.lib, and _example.pyd. I open up python and try it out and it doesn't work like the tutorial. The tutorial says type: import example which gives no errors so I type example.fact(5) when I do this I get this error Traceback (most recent call last): File "<pyshell#1>", line 1, in <module> example.fact(5) AttributeError: 'module' object has no attribute 'fact' so at first I didn't think it was working at all, but this works example.example.fact(5) It works as far as existing unlike the one above, but doesn't give the answer back. I guess this is because I made example a class with header/cpp files. So I know how I could rearrange the code and get example.fact(5) working. The thing I'm interested in is when I type example.example.fact(5) I get this error Traceback (most recent call last): File "<pyshell#4>", line 1, in <module> example.example.fact(5) TypeError: unbound method fact() must be called with example instance as first argument (got int instance instead) Just for curiosity and the possibility I might encounter it in a more complex project later what does this mean? Also thanks for all your help so far I do understand how to use swig and python now and could do it with other projects. |
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Re: New user small problem
by Zer033
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I figured the above problem out it was just a small code error. Thanks again for all the help really appreciated! |
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Re: New user small problem
by nitro-4
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> The thing I'm interested in is when I type
> > example.example.fact(5) > > I get this error > > Traceback (most recent call last): > File "<pyshell#4>", line 1, in <module> > example.example.fact(5) > TypeError: unbound method fact() must be called with example instance as > first argument (got int instance instead) > > Just for curiosity and the possibility I might encounter it in a more > complex project later what does this mean? Sounds like you are doing something like this: class MyClass(object): def test(self, x): print x @staticmethod def test2(x): print x klass = MyClass klass_instance = MyClass() klass.test(5) # error! klass_instance.test(5) # good! it's the same as klass.test( klass_instance, 5 ) In this example there is a class object and there is a class instance object. You can only call fact as-is on the instance object. If you try to call it on a plain class object you get the error above, because python expects the first argument of test (= "self") to be a class instance. If you want to use "test" like a static method (it doesn't depend on any instance-specific data) you can do it like shown above with "test2". I guess you should read some python tutorials on classes to understand what I am trying to tell here. I am sure other people are more talented at explaining this than I am. -Matthias ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Swig-user mailing list Swig-user@... https://lists.sourceforge.net/lists/listinfo/swig-user |
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