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From: Nick H. <wee...@ya...> - 2009-10-25 01:10:17
|
Hello all,
I am trying to plot things from C using pylab. The configuration:
Window XP 32 bits
Python-2.6.3
numpy-1.3.0
matplotlib-0.99.1.
I can easily do this on Linux, but the same code does not work on Windows. Here is a test program that tries to import pylab:
#include <stdio.h>
#include <Python.h>
int main(void)
{
PyObject * module = NULL;
Py_Initialize();
module = PyImport_ImportModule("matplotlib.pylab");
if(module == NULL || module == Py_None)
{
printf("no\n");
PyErr_Print();
PyErr_Clear();
}
else
{
printf("yes\n");
}
Py_Finalize();
return 0;
}
The code above works fine with Python2.6 and Linux. However, on Windows it fails; here is the output:
no
Traceback (most recent call last):
File "C:\Python26\lib\site-packages\matplotlib\pylab.py", line 206, in <module>
from matplotlib import mpl # pulls in most modules
File "C:\Python26\lib\site-packages\matplotlib\mpl.py", line 1, in <module>
from matplotlib import artist
File "C:\Python26\lib\site-packages\matplotlib\artist.py", line 5, in <module>
from transforms import Bbox, IdentityTransform, TransformedBbox, TransformedPath
File "C:\Python26\lib\site-packages\matplotlib\transforms.py", line 34, in <module>
from matplotlib._path import affine_transform
ImportError: DLL load failed: The specified module could not be found.
Has anybody tried this?
Thanks!
Nick
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From: Michael D. <md...@st...> - 2009-10-26 12:54:57
|
I'm not aware of anyone trying this, but I suspect it's related to
differences in how DLL paths are searched on Windows vs. shared objects
on Linux.
This sort of seems like a lower-level Python issue -- I wonder if you
could find other projects that do this and see where matplotlib
differs. For instance, can you import numpy this way? If not, I would
bring this up on the Python users list and see if they have any advice.
Mike
Nick Hilton wrote:
> Hello all,
>
> I am trying to plot things from C using pylab. The configuration:
>
> Window XP 32 bits
> Python-2.6.3
> numpy-1.3.0
> matplotlib-0.99.1.
>
> I can easily do this on Linux, but the same code does not work on Windows. Here is a test program that tries to import pylab:
>
> #include <stdio.h>
>
> #include <Python.h>
>
>
>
> int main(void)
>
> {
>
> PyObject * module = NULL;
>
>
>
> Py_Initialize();
>
>
>
> module = PyImport_ImportModule("matplotlib.pylab");
>
>
>
> if(module == NULL || module == Py_None)
>
> {
>
> printf("no\n");
>
> PyErr_Print();
>
> PyErr_Clear();
>
> }
>
> else
>
> {
>
> printf("yes\n");
>
> }
>
>
>
> Py_Finalize();
>
>
>
> return 0;
>
> }
>
> The code above works fine with Python2.6 and Linux. However, on Windows it fails; here is the output:
>
> no
>
> Traceback (most recent call last):
>
> File "C:\Python26\lib\site-packages\matplotlib\pylab.py", line 206, in <module>
>
> from matplotlib import mpl # pulls in most modules
>
> File "C:\Python26\lib\site-packages\matplotlib\mpl.py", line 1, in <module>
>
> from matplotlib import artist
>
> File "C:\Python26\lib\site-packages\matplotlib\artist.py", line 5, in <module>
>
> from transforms import Bbox, IdentityTransform, TransformedBbox, TransformedPath
>
> File "C:\Python26\lib\site-packages\matplotlib\transforms.py", line 34, in <module>
>
> from matplotlib._path import affine_transform
>
> ImportError: DLL load failed: The specified module could not be found.
>
> Has anybody tried this?
>
> Thanks!
> Nick
>
>
>
>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
> http://p.sf.net/sfu/devconference
> _______________________________________________
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> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
--
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA
|
|
From: Nick H. <wee...@ya...> - 2009-10-28 03:48:13
|
I have confirmed that this error does not occur with Matplotlib-0.99.0 and Python 2.6.
It does occur when I remove 0.99.0 and install 0.99.1.
--- On Mon, 10/26/09, Michael Droettboom <md...@st...> wrote:
> From: Michael Droettboom <md...@st...>
> Subject: Re: [Matplotlib-users] Can't import pylab on Windows with C API
> To: "Nick Hilton" <wee...@ya...>
> Cc: mat...@li...
> Date: Monday, October 26, 2009, 5:54 AM
> I'm not aware of anyone trying this,
> but I suspect it's related to
> differences in how DLL paths are searched on Windows vs.
> shared objects
> on Linux.
>
> This sort of seems like a lower-level Python issue -- I
> wonder if you
> could find other projects that do this and see where
> matplotlib
> differs. For instance, can you import numpy this
> way? If not, I would
> bring this up on the Python users list and see if they have
> any advice.
>
> Mike
>
> Nick Hilton wrote:
> > Hello all,
> >
> > I am trying to plot things from C using pylab.
> The configuration:
> >
> > Window XP 32 bits
> > Python-2.6.3
> > numpy-1.3.0
> > matplotlib-0.99.1.
> >
> > I can easily do this on Linux, but the same code does
> not work on Windows. Here is a test program that tries
> to import pylab:
> >
> > #include <stdio.h>
> >
> > #include <Python.h>
> >
> >
> >
> > int main(void)
> >
> > {
> >
> > PyObject * module = NULL;
> >
> >
> >
> > Py_Initialize();
> >
> >
> >
> > module =
> PyImport_ImportModule("matplotlib.pylab");
> >
> >
> >
> > if(module == NULL || module ==
> Py_None)
> >
> > {
> >
> > printf("no\n");
> >
> > PyErr_Print();
> >
> > PyErr_Clear();
> >
> > }
> >
> > else
> >
> > {
> >
> >
> printf("yes\n");
> >
> > }
> >
> >
> >
> > Py_Finalize();
> >
> >
> >
> > return 0;
> >
> > }
> >
> > The code above works fine with Python2.6 and
> Linux. However, on Windows it fails; here is the
> output:
> >
> > no
> >
> > Traceback (most recent call last):
> >
> > File
> "C:\Python26\lib\site-packages\matplotlib\pylab.py", line
> 206, in <module>
> >
> > from matplotlib import
> mpl # pulls in most modules
> >
> > File
> "C:\Python26\lib\site-packages\matplotlib\mpl.py", line 1,
> in <module>
> >
> > from matplotlib import artist
> >
> > File
> "C:\Python26\lib\site-packages\matplotlib\artist.py", line
> 5, in <module>
> >
> > from transforms import Bbox,
> IdentityTransform, TransformedBbox, TransformedPath
> >
> > File
> "C:\Python26\lib\site-packages\matplotlib\transforms.py",
> line 34, in <module>
> >
> > from matplotlib._path import
> affine_transform
> >
> > ImportError: DLL load failed: The specified module
> could not be found.
> >
> > Has anybody tried this?
> >
> > Thanks!
> > Nick
> >
> >
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> > Come build with us! The BlackBerry(R) Developer
> Conference in SF, CA
> > is the only developer event you need to attend this
> year. Jumpstart your
> > developing skills, take BlackBerry mobile applications
> to market and stay
> > ahead of the curve. Join us from November 9 - 12,
> 2009. Register now!
> > http://p.sf.net/sfu/devconference
> > _______________________________________________
> > Matplotlib-users mailing list
> > Mat...@li...
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> >
>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>
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