是否可以将带有许多包的 Python 脚本嵌入到 C# 中？

Question

I need to embed some python scripts in C# application. The problem is these scripts use many packages like numpy, openCV etc. I've read that Ironpython may handle such embedding but it's limited to pure Python code without any packages. It would be awesome to have such script as an object in C# app so I would call it every time I need without redundant input/output operations. Time and performance are of the essence, beacause operations are performed on data captured from camera on Python script.

Is there any way to make it?

Answer 1

using System;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;

namespace App
{
    public  class Test
    {
        

        private void runScript(object sender, EventArgs e)
        {
            run_cmd();
        }

        private void run_cmd()
        {

            string fileName = @"C:\app.py";

            Process p = new Process();
            p.StartInfo = new ProcessStartInfo(@"C:\path\python.exe", fileName)
            {
                RedirectStandardOutput = true,
                UseShellExecute = false,
                CreateNoWindow = true
            };
            p.Start();

            string output = p.StandardOutput.ReadToEnd();
            p.WaitForExit();

            Console.WriteLine(output);

            Console.ReadLine();

        }
    }
}

Answer 2

If you need your python script to interact with .NET objects, you might take a look at the Python.NET package.

using Python.Runtime;

class Test
{

    void RunPython()
    {
        using (Py.GIL())
        {
            using (var scope = Py.CreateScope())
            {
                var scriptFileName = "myscript.py";
                var compiledFile = PythonEngine.Compile(File.ReadAllText(scriptFileName), scriptFileName);

                scope.Execute(compiledFile); // can be compiled once, executed  multiple times.
            }
        }
    }
}

You can pass named object to the Python engine with code like this:

scope.Set("person", pyPerson);

you can find more examples, including examples how to access .NET objects here:

http://pythonnet.github.io/

Using IronPython would be another possibility, but it supports Python 2.7 syntax and is not fully compatible with some Python libraries.