c如何调用python界面

在C语言中调用Python界面，可以使用Python的C API，Python提供了一套C API，可以让开发者在C程序中嵌入Python代码，或者在C程序中调用Python函数，以下是详细的技术教学：

1、安装Python和开发库

确保你的计算机上已经安装了Python，需要安装Python的开发库，在Linux系统中，可以使用以下命令安装：

sudo aptget install pythondev

在Windows系统中，可以从Python官网下载并安装Python开发库。

2、编写C程序

创建一个名为call_python.c的C文件，并在其中编写以下代码：

#include <Python.h>
int main(int argc, char *argv[]) {
    // 初始化Python解释器
    Py_Initialize();
    // 导入Python模块
    PyObject *pName = PyUnicode_FromString("your_python_module"); // 替换为你的Python模块名
    PyObject *pModule = PyImport_Import(pName);
    Py_DECREF(pName);
    if (pModule != NULL) {
        // 获取Python模块中的函数或类
        PyObject *pFunc = PyObject_GetAttrString(pModule, "your_function_or_class"); // 替换为你的函数或类名
        if (pFunc && PyCallable_Check(pFunc)) {
            // 调用Python函数或类，并获取返回值
            PyObject *pResult = PyObject_CallObject(pFunc, NULL);
            if (pResult != NULL) {
                printf("Result of calling Python function or class: %ld
", PyLong_AsLong(pResult));
                Py_DECREF(pResult);
            } else {
                PyErr_Print();
            }
        } else {
            if (PyErr_Occurred()) {
                PyErr_Print();
            }
            fprintf(stderr, "Cannot find function or class
");
        }
        Py_XDECREF(pFunc);
        Py_DECREF(pModule);
    } else {
        PyErr_Print();
        fprintf(stderr, "Failed to load Python module
");
    }
    // 关闭Python解释器
    Py_FinalizeEx();
    return 0;
}

3、编译C程序

使用以下命令编译C程序：

gcc call_python.c o call_python I/usr/include/python3.x lpython3.xm lpthread ldl lutil lm Wl,rpath,/usr/lib/python3.x/config3.xamd64 lpython3.x lboost_system L/usr/lib/python3.x/config3.xamd64 Wl,rpath,/usr/lib/python3.x/config3.xamd64 lpython3.x lboost_filesystem L/usr/lib/python3.x/config3.xamd64 Wl,rpath,/usr/lib/python3.x/config3.xamd64 lpython3.x lboost_iostreams L/usr/lib/python3.x/config3.xamd64 Wl,rpath,/usr/lib/python3.x/config3.xamd64 lpython3.x lboost_regex L/usr/lib/python3.x/config3.xamd64 Wl,rpath,/usr/lib/python3.x/config3.xamd64 lpython3.x ldl lutil lm Wl,rpath,/home/user/anaconda3/envs/py38/lib Wl,enablenewdtags Wl,excludelibs=ALL Wl,stripall Wl,noasneeded Wl,warnunusedcommandlineargument Wl,buildid Wl,hashstyle=both Wl,enablestd=c99 Wl,disablenls Wl,enableshared Wl,enablethreads Wl,withsystemroot /usr Wl,withoutheaders /home/user/anaconda3/envs/py38/include /home/user/anaconda3/envs/py38/lib /usr/lib /usr/local/lib /home/user/anaconda3/envs/py38/lib /home/user/anaconda3/envs/py38/include /usr/include /home/user/anaconda3/envs/py38/lib /home/user/anaconda3/envs/py38/include /home/user/anaconda3/envs/py38/lib /home/user/anaconda3/envs/py38/include /home/user/anaconda3/envs/py38/lib /home/user/anaconda3`