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：
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PATH
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\include
引用目录：
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PATH
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\libs
链接器→
输入/附加依赖项：
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PATH
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\libs\python37.lib（请根据自身实际选择Python版本）
附言：
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PATH
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为Anaconda或其虚拟环境的路径，请将上述的所有
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PATH
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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
all
first_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