AttributeError: 'dict' object has no attribute 'size' when fully qualified

[Jeff Donner]

Hi; I can get a C struct to show like I expect when I cimport the symbols into the global namespace, but not when I leave them needing to be fully qualified - can anyone point out what's likely wrong? 

This is with both Cython 19.x, and 20.1.

Thanks.

== Banana.pyx DOESN'T work when symbols have to be fully qualified

cimport cbanana

def add(i):

    cdef cbanana.Banana b

    b.size = i

    cbanana.print_banana(&b)

== test

~/banana> python -c 'import Banana ; Banana.add(5)'

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "Banana.pyx", line 5, in Banana.add (Banana.c:708)

    b.size = i

AttributeError: 'dict' object has no attribute 'size'

== Banana.pyx WORKS but makes the symbols global

from cbanana cimport Banana, print_banana

def add(i):

    cdef Banana b

    b.size = i

    print_banana(&b)

== test

~/banana> python -c 'import Banana ; Banana.add(5)'

banana 5!

Remaining files:

== banana.h

typedef struct {

  int size;

} Banana;

void print_banana(Banana* b);

== banana-impl.c

#include "banana.h"

#include <stdio.h>

void print_banana(Banana* b) {

  printf("banana %d!\n", b->size);

}

== cbanana.pxd

cdef extern from "banana.h":

    ctypedef struct Banana:

        int size

    void print_banana(Banana* banana)

== setup.py

from distutils.core import setup

from distutils.extension import Extension

from Cython.Distutils import build_ext

# build:

#   rm -rf build banana.c Banana.so && \

#   CFLAGS="-I." LDFLAGS="-Llib" python setup.py build_ext -i

# basic test

#   export PYTHONPATH=.

#   python -c 'import Banana ; Banana.add(5)'

setup(name='BananaExtension',

      version='0.1',

      packages=['Banana'],

      package_dir = {'Banana': 'Banana'},

      cmdclass = {'build_ext': build_ext},

      ext_modules=[Extension('Banana',

                             ['Banana.pyx',

                              'banana-impl.c'])

                 ],

     )

[Robert Bradshaw]

On Thu, Apr 17, 2014 at 12:11 AM, Jeff Donner <jeffrey...@gmail.com> wrote:

Hi; I can get a C struct to show like I expect when I cimport the symbols into the global namespace, but not when I leave them needing to be fully qualified - can anyone point out what's likely wrong? 

This is with both Cython 19.x, and 20.1.

Thanks.

I'm unable to reproduce this. Could you post a complete tarball somewhere?

 

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[Jeff Donner]

On Thursday, April 17, 2014 9:35:35 AM UTC-7, Robert Bradshaw wrote:

On Thu, Apr 17, 2014 at 12:11 AM, Jeff Donner <jeffrey...@gmail.com> wrote:

Hi; I can get a C struct to show like I expect when I cimport the symbols into the global namespace, but not when I leave them needing to be fully qualified - can anyone point out what's likely wrong? 

This is with both Cython 19.x, and 20.1.

Thanks.

I'm unable to reproduce this. Could you post a complete tarball somewhere?

It's working for me now, I just wasn't cleaning up the intermediate files correctly. Sorry for the false alarm! 

Jeff