C# calling python interpreter

Question

I am new to C# and I tried to execute a python program using the ProcessStartInfo class. I followed this link and did the same. However, I cannot get any redirect output. I tried to execute the Python interpreter with the argument and there were no problems. However, I saw the console pop up and then went away immediately. There was no output print. I tried to use the method process.waitForExit() but the console also went away. Any ideas?

ProcessStartInfo start = new ProcessStartInfo();
            start.FileName = @"C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\python.exe";
            start.Arguments = @"C:\Users\test\test.py";
            start.UseShellExecute = false;
            start.RedirectStandardOutput = true;
            start.RedirectStandardError = true;
            using (Process process = Process.Start(start))
            {

                using (StreamReader reader = process.StandardOutput)
                {
                    string result = reader.ReadToEnd();
                    Console.Write(result);
                    process.WaitForExit();
                }
            }

Is it possible that it's printing out an error? Try reading from StandardError instead of StandardOutput to see if that shows anything. — Jon Skeet
– Jon Skeet, Commented Jun 30, 2018 at 16:26

Ivan R. · Accepted Answer · 2018-06-30 18:53:32Z

1

If you start your application from VS then VS closes application console after finishing execution. Try to add Console.ReadLine() as the last line in your program.

using (Process process = Process.Start(start))
{
    using (StreamReader reader = process.StandardOutput)
    {
        string result = reader.ReadToEnd();
        Console.Write(result);
    }
 }
 Console.ReadLine();

answered Jun 30, 2018 at 18:53

Ivan R.

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