是否可以从ObjC调用Python模块？

Question

使用PyObjC,是否可以导入Python模块,调用函数并获得结果(例如)NSString？

例如,执行以下Python代码的等效操作:

import mymodule
result = mymodule.mymethod()

..in伪ObjC:

PyModule *mypymod = [PyImport module:@"mymodule"];
NSString *result = [[mypymod getattr:"mymethod"] call:@"mymethod"];

Answer 1

正如Alex Martelli的回答中提到的那样(虽然邮件列表信息中的链接被破坏了,但它应该是https://docs.python.org/extending/embedding.html#pure-embedding).C的呼叫方式. .

print urllib.urlopen("http://google.com").read()

• 将Python.framework添加到项目中(右键单击External Frameworks..,Add > Existing Frameworks.中的框架/System/Library/Frameworks/
• 添加/System/Library/Frameworks/Python.framework/Headers到"标题搜索路径"(Project > Edit Project Settings)

以下代码应该可以工作(虽然它可能不是有史以来最好的代码..)

#include <Python.h>

int main(){
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    Py_Initialize();

    // import urllib
    PyObject *mymodule = PyImport_Import(PyString_FromString("urllib"));
    // thefunc = urllib.urlopen
    PyObject *thefunc = PyObject_GetAttrString(mymodule, "urlopen");

    // if callable(thefunc):
    if(thefunc && PyCallable_Check(thefunc)){
        // theargs = ()
        PyObject *theargs = PyTuple_New(1);

        // theargs[0] = "http://google.com"
        PyTuple_SetItem(theargs, 0, PyString_FromString("http://google.com"));

        // f = thefunc.__call__(*theargs)
        PyObject *f = PyObject_CallObject(thefunc, theargs);

        // read = f.read
        PyObject *read = PyObject_GetAttrString(f, "read");

        // result = read.__call__()
        PyObject *result = PyObject_CallObject(read, NULL);


        if(result != NULL){
            // print result
            printf("Result of call: %s", PyString_AsString(result));
        }
    }
    [pool release];
}

此外本教程是好的