通过C#脚本运行Python应用程序并与之交互

时间:2018-11-11 20:19:16

标签: c# python unity3d

我正在尝试使用Unity C#(不用担心,很容易移植到普通C#,但是我目前没有让我这样做的程序)使用以下代码运行python应用程序,基本上只是启动一个python程序并读取和写入一些输入和输出:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using System;
using System.Diagnostics;
using System.IO;
 using System.Text;

public class PythonSetup : MonoBehaviour {

    // Use this for initialization
    void Start () {
        SetupPython ();
    }

    void SetupPython() {
        string fileName = @"C:\sample_script.py";

        Process p = new Process();
        p.StartInfo = new ProcessStartInfo(pythonExe, "YOUR PYTHON3 PATH")
        {
            RedirectStandardOutput = true,
            UseShellExecute = false,
            CreateNoWindow = true
        };

        p.Start();

        UnityEngine.Debug.Log (p.StandardOutput.ReadToEnd ());
        p.StandardInput.WriteLine ("\n hi \n");
        UnityEngine.Debug.Log(p.StandardOutput.ReadToEnd());

        p.WaitForExit();
    }
}

位于C:/sample_script.py的python应用程序是:

print("Input here:")
i = input()
print(i)

C#程序给我错误:

InvalidOperationException: Standard input has not been redirected System.Diagnostics.Process.get_StandardInput () (wrapper remoting-invoke-with-check) System.Diagnostics.Process:get_StandardInput ()

感谢您的帮助!

要放入普通的C#项目,只需将UnityEngine.Debug.Log替换为Console.WriteLine,然后将Start()替换为Main()。

1 个答案:

答案 0 :(得分:1)

您需要配置您的进程,以便它知道将输入从标准输入流重定向到目标应用程序。详细了解此here

几乎等于等于在您的ProcessStartInfo中包含另一个属性初始化程序:

    p.StartInfo = new ProcessStartInfo(pythonExe, "YOUR PYTHON3 PATH")
    {
        //You need to set this property to true if you intend to write to StandardInput.
        RedirectStandardInput = true,
        RedirectStandardOutput = true,
        UseShellExecute = false,
        CreateNoWindow = true
    };
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