在Python C API中返回多重对象的元组

#include <Python.h>

static PyObject* my_function(PyObject* self, PyObject* args) {
    PyObject* obj1 = PyLong_FromLong(123);
    PyObject* obj2 = PyUnicode_FromString("hello");
    PyObject* obj3 = PyFloat_FromDouble(3.14);

    PyObject* result = PyTuple_New(3);
    PyTuple_SetItem(result, 0, obj1);
    PyTuple_SetItem(result, 1, obj2);
    PyTuple_SetItem(result, 2, obj3);

    return result;
}

static PyMethodDef my_module_methods[] = {
    {"my_function", my_function, METH_NOARGS, "Returns a tuple of multiple objects."},
    {NULL, NULL, 0, NULL}
};

static struct PyModuleDef my_module = {
    PyModuleDef_HEAD_INIT,
    "my_module",
    "A sample module",
    -1,
    my_module_methods
};

PyMODINIT_FUNC PyInit_my_module(void) {
    return PyModule_Create(&my_module);
}

import my_module

result = my_module.my_function()
print(result)  # 输出：(123, 'hello', 3.14)