1.Python脚本,名称为py_add.py defadd(a=,b=):print('Function of python called!')print('a=',a)print('b=',b)print('a+b=',a+b) 1. 2. 3. 4. 5. 2.C代码 #include#include#includeintmain(intargc,char**argv){//初始化,载入python的扩展模块Py_Initialize();//判断初始化是否成功if(...
/* Get a reference to the math.pow function */ pow_func = import_name("math","pow"); /* Call it using our call_func() code */ for (x = 0.0; x < 10.0; x += 0.1) { printf("%0.2f %0.2f\n", x, call_func(pow_func,x,2.0)); } /* Done */ Py_DECREF(pow_func); ...
先介绍第一种方法,python文档中给出了python c api,可以实现C++与python的互动。 先新建一个C++ Project,名字叫CallPythonFunction,在项目->属性->VC++目录,包含目录添加你自己的python的inclue文件夹路径, 在库目录添加python的libs目录,如下(记得查看自己的python安装目录) 此时去你的python安装目录下面,找到libs文件...
PREDICTED(CALL_FUNCTION);//sp: 运行时栈栈顶指针//res: 函数的返回值, 一个PyObject *PyObject **sp, *res;//指向运行时栈的栈顶sp = stack_pointer;//调用函数, 将返回值赋值给res, tstate表示线程对象, &sp显然是一个三级指针了, oparg表示指令的操作数res = call_function(tstate, &sp, oparg,...
2. 如果你没有按照我说的方式g++ call_function.c -I/usr/include/python2.7 -lpython2.7编译，...
EXTEND_ARG 1 CALL_FUNCTION 4 被解释为: EXTENDED_ARG 1 CALL_FUNCTION 260 对于每个操作码,最多允许三个前缀EXTENDED_ARG,形成从两个字节到四个字节的参数。 值得一提的是,我们看到上图有尖括号,例如第4偏移量为12,第5行偏移量22,第7行偏移量为50,第8行偏移量52,这些指令都是在Python函数执行流程中...
Calling the function Structs and metaclasses Next in the series Last time we’ve looked at using ctypes to call C API, and writing extension module using Python/C API. Now we can finally tie these two together - looking at how ctypes is actually implem...
For simplicity, let’s start with a function from the standard C library. This does not add any dependencies to your code, and it has the additional advantage that Cython already defines many such functions for you. So you can just cimport and use them. ...
这个在Python中定义的函数在 ctypes 中称为回调函数 (callback function)。也就是说需要把Python函数当作变量传给C语言,想想还是有些难度。 但调查以后发现 ctypes 提供了CFUNCTYPE来方便地进行回调函数定义,而C语言本身也是支持函数指针的,因此这个功能实现还算简单,具体展开如下。
All python initialization module functions need to be named init<module_name> - this is how python knows which function to call in your extension module. All it needs to do right now is to register the module with the list of static methods you supplied....