如何从C ++程序运行python脚本? [英] How do you run a python script from a C++ program?

问题描述

我能够找出一些我知道需要包含Python.h并且需要具备的东西

I have been able to find out a few things I know that you need to include Python.h and that you need to have

Py_Initialize();
//code that runs the python script
Py_Finalize();

打开和关闭解释器，但中间部分让我迷失了方向.我可以找到的有关该主题的大多数信息都使用带有一些参数的Py_SimpleString()命令.我已经搜索了一段时间，但是找不到任何文档可以清楚地说明该命令的功能或使用方法.

to open and close the interpreter, but that middle part has me lost. Most of the information I can find on the subject use the Py_SimpleString() command with some arguments. I have been searching for a while but I can't find any documentation that clearly explains what that command is doing or how exactly to use it.

我不一定需要python脚本直接将值传递给C ++程序.它正在写入文本文件，而C ++可以解析文本文件中所需的内容.我只需要获取.py文件即可运行并执行其功能.

I don't necessarily need the python script to directly pass values to the C++ program. It's writing to a text file and the C++ can just parse the text file for the piece it needs. I just need to get the .py file to run and preform its functions.

感谢您的帮助！

推荐答案

从C ++程序中运行Python脚本的最简单方法是通过PyRun_SimpleString()，如

The easiest way to run a Python script from within a C++ program is via PyRun_SimpleString(), as shown in the example at this web page:

#include <Python.h>

int main(int argc, char *argv[])
{
  Py_SetProgramName(argv[0]);  /* optional but recommended */
  Py_Initialize();
  PyRun_SimpleString("from time import time,ctime\n"
                     "print 'Today is',ctime(time())\n");
  Py_Finalize();
  return 0;
}

如果您要运行存储在.py文件中的脚本，而不是直接以字符串形式提供Python源文本，则可以调用

If you want to run a script that's stored in a .py file instead of supplying the Python source text directly as a string, you can call PyRun_SimpleFile() instead of PyRun_SimpleString().

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