How to return the "return value" of a python script in C#?

I want to run a python script in C# and then want to return the "return value" of the python script into C#.

My python script:

def myfunc():
    print("aaa")
    return "abc"

if __name__ == "__main__":
     myfunc()

My C# file:

void Main()
{
    var result = run_cmd();
    Console.WriteLine(result);
}


private string run_cmd()
{

    string fileName = @"C:\Users\NCH-Lap10\Desktop\return_one.py";
    string python = @"C:\Users\NCH-Lap10\AppData\Local\Programs\Python\Python37-32\python.exe";

    Process psi = new Process();
    psi.StartInfo = new ProcessStartInfo(python, fileName)
    {
        RedirectStandardOutput = true,
        UseShellExecute = false,
        CreateNoWindow = false
    };
    psi.Start();

    string output = psi.StandardOutput.ReadToEnd();
    Console.WriteLine(output);
    
    psi.WaitForExit();
    int result = psi.ExitCode;
        
    return output;
}

I can return the printed message "aaa" but I need "abc". I assumed the psi.ExitCode would give me the needed output but it is not working.

Your script returns the value of myfunc only internally. If you want to export the value, you can write print(myfunc()) after the main-if. Also check this answer as it discusses various methods and concepts