Trying to wrap SFML Window; getting "ImportError: No module named 'ExprNodes'"

[Goran Milovanovic]

# sfml.pxd:

cdef extern from "SFML/Window.hpp" namespace "sf":

cdef cppclass VideoMode:

VideoMode(unsigned int, unsigned int) except +

cdef cppclass Window:

Window(VideoMode, String) except + 

void display()

# display.pyx:

cimport sfml

cdef class Window:

cdef sfml.Window* _this

def __cinit__(self, unsigned int width, unsigned int height):

self._this = new sfml.Window(sfml.VideoMode(width, height), "title")

def __dealloc__(self):

del self._this

def display(self):

self._this.display()

# setup.py:

from distutils.core import setup

from distutils.extension import Extension

from Cython.Distutils import build_ext

setup(

cmdclass = {'build_ext': build_ext},

ext_modules = [

Extension("display", ["display.pyx"],

language='c++',

libraries=["sfml-system", "sfml-window"])

]

)

The error when running `python setup.py build`:

running build

running build_ext

cythoning display.pyx to display.cpp

Traceback (most recent call last):

  File "setup.py", line 10, in <module>

    libraries=["sfml-system", "sfml-window"])

  File "/usr/lib/python3.3/distutils/core.py", line 148, in setup

    dist.run_commands()

  File "/usr/lib/python3.3/distutils/dist.py", line 917, in run_commands

    self.run_command(cmd)

  File "/usr/lib/python3.3/distutils/dist.py", line 936, in run_command

    cmd_obj.run()

  File "/usr/lib/python3.3/distutils/command/build.py", line 126, in run

    self.run_command(cmd_name)

  File "/usr/lib/python3.3/distutils/cmd.py", line 313, in run_command

    self.distribution.run_command(command)

  File "/usr/lib/python3.3/distutils/dist.py", line 936, in run_command

    cmd_obj.run()

  File "/usr/lib/python3.3/site-packages/Cython/Distutils/build_ext.py", line 163, in run

    _build_ext.build_ext.run(self)

  File "/usr/lib/python3.3/distutils/command/build_ext.py", line 354, in run

    self.build_extensions()

  File "/usr/lib/python3.3/site-packages/Cython/Distutils/build_ext.py", line 170, in build_extensions

    ext.sources = self.cython_sources(ext.sources, ext)

  File "/usr/lib/python3.3/site-packages/Cython/Distutils/build_ext.py", line 317, in cython_sources

    full_module_name=module_name)

  File "/usr/lib/python3.3/site-packages/Cython/Compiler/Main.py", line 608, in compile

    return compile_single(source, options, full_module_name)

  File "/usr/lib/python3.3/site-packages/Cython/Compiler/Main.py", line 549, in compile_single

    return run_pipeline(source, options, full_module_name)

  File "/usr/lib/python3.3/site-packages/Cython/Compiler/Main.py", line 386, in run_pipeline

    from . import Pipeline

  File "/usr/lib/python3.3/site-packages/Cython/Compiler/Pipeline.py", line 7, in <module>

    from .Visitor import CythonTransform

  File "Visitor.py", line 10, in init Cython.Compiler.Visitor (/build/src/Cython-0.19/Cython/Compiler/Visitor.c:15987)

ImportError: No module named 'ExprNodes'

Apparently, it can't find something called 'ExprNodes', but I don't think that my Cython installation is broken, because I managed to successfully wrap a different C++ library some time ago (reference), and I didn't run into this problem.

I'm using Cython 0.19.

I would appreciate any help/insight that you could offer.

Thanks.