VS调用Python函数的方法

VS调用Python函数的方法

Yutai Sun

VS修改为Release x64 VS项目属性→ VC++目录→ 包含目录：$PATH$\include 引用目录：$PATH$\libs 链接器→ 输入/附加依赖项：$PATH$\libs\python37.lib（请根据自身实际选择Python版本）

附言：$PATH$为Anaconda或其虚拟环境的路径，请将上述的所有$PATH$改为形如下列的形式F:\Anaconda\Anaconda3\envs\tensorflow（虚拟环境）

将自己要运行的神经网络写进Python脚本Sample.py，并将脚本放入VS项目文件夹下x64/Release文件夹下。

将下列代码根据注释含义放入自己的VS项目代码中：

#include "Python.h" #include <iostream> int main() { // Initialize the Python interpreter. Py_SetPythonHome(L"E:/Anaconda3"); Py_Initialize(); // Create some Python objects that will later be assigned values. PyObject *pModule, *pDict, *pFunc_add, *pFunc_hello, *pArgs, *pValue; // Import the file as a Python module. pModule = PyImport_ImportModule("Sample"); // Create a dictionary for the contents of the module. pDict = PyModule_GetDict(pModule); // Get the add method from the dictionary. pFunc_add = PyDict_GetItemString(pDict, "add"); pFunc_hello = PyDict_GetItemString(pDict, "hello"); // Create a Python tuple to hold the arguments to the method. pArgs = PyTuple_New(2); // Convert 2 to a Python integer. pValue = PyLong_FromLong(2); // Set the Python int as the first and second arguments to the method. PyTuple_SetItem(pArgs, 0, pValue); PyTuple_SetItem(pArgs, 1, pValue); // Call the function with the arguments. PyObject_CallObject(pFunc_hello, NULL); PyObject* pResult = PyObject_CallObject(pFunc_add, pArgs); // Print a message if calling the method failed. if (pResult == NULL) printf("Calling the add method failed.\n"); // Convert the result to a long from a Python object. long result = PyLong_AsLong(pResult); // Destroy the Python interpreter. Py_Finalize(); // Print the result. printf("Calling Python to find the sum of 2 and 2.\n"); printf("The result is %d.\n", result); std::cin.ignore(); return 0; }

文件输入输出： 这时的文件输入输出，请使用

freopen(“in.txt”,”r”,stdin);freopen(“out.txt”,”w”,stdout);

结束使用后用 fclose(stdin);fclose(stdout); 来关闭输入输出流。 C++的文件输出并非实时输出，因此在关闭输出流之前，您还应该添加这句话来清空缓冲区：fflush(stdout);

此后，如果您还需要在命令行中输出，请在fclose语句之后加上

freopen(“CON”,”r”,stdin);freopen(“CON”,”w”,stdout);以恢复输出在命令行上。

参考资料： https://blog.csdn.net/shanwenkang/article/details/88954652?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2_allfirst_rank_v2~rank_v25-1-88954652.nonecase&utm_term=c++%E8%B0%83%E7%94%A8anaconda

https://blog.csdn.net/weixin_30588675/article/details/97496254?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param