windows下python调用c文件流程
1.新建fun.c文件和fun.h文件
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int fac(int n)
{
if(n < 2)
return 1;
return n * fac(n-1);
}
char *reverse(char *s)
{
char t, *p = s,*q=(s+(strlen(s)-1));
while(s && (p<q)){
t = *p;
*p++ = *q;
*q-- = t;
}
return s;
}
int test(void)
// int main(void)
{
char s[1024];
printf("4!==%d\n",fac(4));
printf("8!==%d\n",fac(8));
strcpy(s,"arthas");
printf("reversing 'arthas',we get '%s'\n",reverse(s));
return 0;
}
#ifndef FUN_H_
#define FUN_H_
int fac(int n);
char *reverse(char *s);
int test(void);
#endif
2.新建funwrapper.c文件
#include "Python.h"
#include <stdlib.h>
#include <string.h>
#include "fun.h"
static PyObject *fun_fac(PyObject *self,PyObject *args)
{
int num;
if(!PyArg_ParseTuple(args,"i",&num))
return NULL;
return (PyObject*)Py_BuildValue("i",fac(num));
}
static PyObject *fun_reverse(PyObject *self,PyObject *args)
{
char *src;
char *mstr;
PyObject *retval;
if(!PyArg_ParseTuple(args,"s",&src))
return NULL;
mstr = malloc(strlen(src)+1);
strcpy(mstr,src);
reverse(mstr);
retval = (PyObject*)Py_BuildValue("ss",src,mstr);
free(mstr);
return retval;
}
static PyObject *fun_test(PyObject *self,PyObject *args)
{
return (PyObject*)Py_BuildValue("i",test());
}
static PyMethodDef funMethods[] = {
{"fac",fun_fac,METH_VARARGS},
{"reverse",fun_reverse,METH_VARARGS},
{"test",fun_test,METH_VARARGS},
{NULL,NULL},
};
void initfun(void)
{
Py_InitModule("fun",funMethods);
}
3.CMD使用指令
setup.py install build
这里我出错了python Unable to find vcvarsall.bat 错误,
参考上一篇日志python Unable to find vcvarsall.bat 错误解决方法。解决了。
然后生成出fun.pyd文件
4.复制到python的DLLS文件夹下
5.可以用python调用了
import fun
print fun.fac(4)
print fun.reverse("arthas")
fun.test()
6.输出的结果
···
24
('arthas', 'sahtra')
4!24
8!40320
reversing 'arthas',we get 'sahtra'
···
文章对您有帮助,开心可以打赏我,金额随意,欢迎来赏!
需要电子方面开发板/传感器/模块等硬件可以到我的淘宝店逛逛