Question

I m 撰写一份“灰色延伸”文件,需要把一个CTypes探测器送回一个“<>条码>>的阵容(我需要与另一个希望一个CTypes点人的“灰色”图书馆接口)。

我找不到任何关于C任何类型的CTypes界面的文件。是否有任何工作环绕,如叫 Python斯底建筑商?

static PyObject *get_pointer(myObject *self)
{
    char *my_pointer = self->internal_pointer;
    return PyCTypes_Pointer(my_pointer); /* how do I turn  my_pointer  into 
              a Python object representing a CTypes pointer? */
}

提前感谢。

Answer 1

尽管你在C区重新编制方案,但还是试图利用Talker。可悲的是,我不了解C类的CTypes接口, could在来源中发现任何 h。也许你能够用以下文字书写你自己的<代码>PyCTypes_Pointer方法。

我没有做任何清理、错误检查或处理,而是用2.7和3.4代我工作。

#include <Python.h>

static const char *test = "Testing Python ctypes char pointer ..."; 

static PyObject *c_char_p = NULL;
static PyObject *c_void_p = NULL;
static PyObject *cast = NULL;

static PyObject * char_p ( void ) {
    PyObject *p = PyLong_FromVoidPtr((void *) test);
    p = PyObject_CallFunction(c_void_p, "O", p);
    return PyObject_CallFunction(cast, "OO", p, c_char_p);
}

static PyObject *len ( void ) {
    return PyLong_FromSize_t(strlen(test));
}

static PyMethodDef methods[] = {
    {"char_p", (PyCFunction) char_p, METH_NOARGS, ""},
    {"len", (PyCFunction) len, METH_NOARGS, ""},
    { NULL }
};

#if PY_MAJOR_VERSION >= 3
static PyModuleDef module = {PyModuleDef_HEAD_INIT, "pyt", "", -1, methods,
    NULL, NULL, NULL, NULL};
#define INIT_FUNC PyInit_pyp
#else
#define INIT_FUNC initpyp
#endif

PyMODINIT_FUNC INIT_FUNC ( void ) {
    PyObject* m;

    PyObject *ctypes = PyImport_ImportModule("ctypes");
    PyObject *c_char = PyObject_GetAttrString(ctypes, "c_char");
    c_char_p = PyObject_CallMethod(ctypes, "POINTER", "O", c_char);
    c_void_p = PyObject_GetAttrString(ctypes, "c_void_p");
    cast = PyObject_GetAttrString(ctypes, "cast");

#if PY_MAJOR_VERSION >= 3
    m = PyModule_Create(&module);
#else
    m = Py_InitModule("pyp", methods);
#endif

    return (PyMODINIT_FUNC) m;
}

正义的建立

from __future__ import print_function
from distutils.core import Extension, setup
import sys
sys.argv.extend(["build_ext", "-i"])
setup(ext_modules = [Extension( pyp , [ pyp.c ])])
import pyp
c = pyp.char_p()
print(c[:pyp.len()])

并取得类似产出

<class  ctypes.LP_c_char > Testing Python ctypes char pointer ...

如果你只重新处理由零污染的扼杀物,你可能使用<条码>c 类型.c_char_p。页: 1

友情链接