Trying to call Python script in C#

Question

I'm making a mini Python IDE for fun. Why not. So I want to be able to call a python script from C# and right now I'm just testing a simple scenario. I know this is NOT how professional IDE's probably work.

    private void Run_Click(object sender, EventArgs e)
    {
        run_cmd("C:/Python34/python.exe", "C:/Users/Alaseel/Desktop/test.py");
    }

    private void About_Click(object sender, EventArgs e)
    {
        // Open the about documentation
    }

    private void run_cmd(string cmd, string args)
    {
        ProcessStartInfo start = new ProcessStartInfo();
        start.FileName = "C:/Python34/python.exe";
        start.Arguments = string.Format("{0} {1}", cmd, args);
        start.UseShellExecute = false;
        start.RedirectStandardOutput = true;
        using (Process process = Process.Start(start))
        {
            using (StreamReader reader = process.StandardOutput)
            {
                string result = reader.ReadToEnd();
                Console.Write(result);
            }
        }
    }

Whenever I click the "run" button on the Windows Form app, it briefly runs the python.exe then closes. It does not actually run the file that I passed in. Am I doing something wrong?

PS: The run_cmd method is NOT mine. I looked up this issue previously on a thread and used their code. But I think I'm using the method wrong.

Any ideas? Thank you!

HammerHeart · Accepted Answer · 2016-03-21 16:50:46Z

3

You are actually putting twice your python.exe path in this case. You have it as cmd and start.Filename

Your commandline will look like : "C:/Python34/python.exe" "C:/Python34/python.exe" "C:/Users/Alaseel/Desktop/test.py"

Which is probably an invalid command.

answered Mar 21, 2016 at 16:50

HammerHeart

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2 Comments

katie1245 Over a year ago

Thanks for your help! How would I restructure the method signature or the method call?

HammerHeart Over a year ago

There are different ways to do this. I would probably do something like : start.FileName = cmd. And then, you don't pass cmd to Arguments, as..it is not an argument to the program you are calling but the program itself ! So, start.Arguments = args. That should work ! ( I didn't test )

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