我正在尝试使用以下IBM tutorial作为参考创建到vala库的python绑定。
我的初始目录包含以下两个文件:
test.vala
using GLib;
namespace Test {
public class Test : Object {
public int sum(int x, int y) {
return x + y;
}
}
}
test.override
%%
headers
#include <Python.h>
#include "pygobject.h"
#include "test.h"
%%
modulename test
%%
import gobject.GObject as PyGObject_Type
%%
ignore-glob
*_get_type
%%
并尝试使用以下代码构建python模块源test_wrap.c
build.sh
#/usr/bin/env bash
valac test.vala -CH test.h
python /usr/share/pygobject/2.0/codegen/h2def.py test.h > test.defs
pygobject-codegen-2.0 -o test.override -p test test.defs > test_wrap.c
但是,最后一个命令失败并显示错误
$ ./build.sh
Traceback (most recent call last):
File "/usr/share/pygobject/2.0/codegen/codegen.py", line 1720, in <module>
sys.exit(main(sys.argv))
File "/usr/share/pygobject/2.0/codegen/codegen.py", line 1672, in main
o = override.Overrides(arg)
File "/usr/share/pygobject/2.0/codegen/override.py", line 52, in __init__
self.handle_file(filename)
File "/usr/share/pygobject/2.0/codegen/override.py", line 84, in handle_file
self.__parse_override(buf, startline, filename)
File "/usr/share/pygobject/2.0/codegen/override.py", line 96, in __parse_override
command = words[0]
IndexError: list index out of range
这是pygobject中的错误,还是我的设置有问题?从python调用用vala编写的代码的最佳方法是什么?
修改 删除额外的行修复了当前的问题,但现在我继续构建python模块,我面临另一个问题。将以下C文件添加到目录中的现有两个文件:
test_module.c
#include <Python.h>
void test_register_classes (PyObject *d);
extern PyMethodDef test_functions[];
DL_EXPORT(void)
inittest(void)
{
PyObject *m, *d;
init_pygobject();
m = Py_InitModule("test", test_functions);
d = PyModule_GetDict(m);
test_register_classes(d);
if (PyErr_Occurred ()) {
Py_FatalError ("can't initialise module test");
}
}
并使用以下脚本构建
build.sh
#/usr/bin/env bash
valac test.vala -CH test.h
python /usr/share/pygobject/2.0/codegen/h2def.py test.h > test.defs
pygobject-codegen-2.0 -o test.override -p test test.defs > test_wrap.c
CFLAGS="`pkg-config --cflags pygobject-2.0` -I/usr/include/python2.6/ -I."
LDFLAGS="`pkg-config --libs pygobject-2.0`"
gcc $CFLAGS -fPIC -c test.c
gcc $CFLAGS -fPIC -c test_wrap.c
gcc $CFLAGS -fPIC -c test_module.c
gcc $LDFLAGS -shared test.o test_wrap.o test_module.o -o test.so
python -c 'import test; exit()'
导致错误:
$ ./build.sh
***INFO*** The coverage of global functions is 100.00% (1/1)
***INFO*** The coverage of methods is 100.00% (1/1)
***INFO*** There are no declared virtual proxies.
***INFO*** There are no declared virtual accessors.
***INFO*** There are no declared interface proxies.
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: ./test.so: undefined symbol: init_pygobject
init_pygobject
符号在哪里定义?我错过了哪些链接?
答案 0 :(得分:4)
答案 1 :(得分:1)
非常糟糕的情况!为pygtk编写绑定非常地狱,幸运的是他们正在转向gobject内省,这将使事情变得更容易。
无论如何,似乎test.override文件中有一个额外的换行符,尝试删除它,它应该可以工作(至少我已经测试过了)
答案 2 :(得分:1)
看起来此代码也已开启 Charlie's Second Blog 2008
test_module.c
需要包含<pygobject.h>
:
#include <Python.h>
#include <pygobject.h>
通过该更改,它在python中构建并运行:
>>> import test
>>> t = test.Test()
>>> t.sum(1,2)
3