我试图使用下面的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:
测试.vala
using GLib;
namespace Test {
public class Test : Object {
public int sum(int x, int y) {
return x + y;
}
}
}
测试覆盖
%%
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模块源代码
build.sh版本
#/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出现错误
$ ./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中的一个bug,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?
编辑:
删除多余的行修复了当前的问题,但是现在当我继续构建python模块时,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:
测试模块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");
}
}
用下面的脚本构建
build.sh版本
#/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
test_wrap.c
符号定义在哪里?我错过了什么链接? 最佳答案
你可以用一种自省的方式。
此存储库包含如何将vala库自动绑定到其他语言的示例:
https://github.com/antono/vala-object
关于python - vala库的Python绑定(bind),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3018914/