How to run C# Console Applications via Python?

Question

I've created the following C# Console Application (.NET Core 3.1) with Visual Studio:

using System;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");

            //Check if args contains anything
            if (args.Length > 0)
            {
                Console.WriteLine("args = " + args[0]);
            } else
            {
                Console.WriteLine("args is empty");
            }

            //Prevent the application from closing itself without user input
            string waiter = Console.ReadLine();
        }
    }
}

I am able to execute the application succesfully with one argument via cmd.exe: CMD Input and Output

Now I'd like to run this program with one argument via Python. I've read How to execute a program or call a system command? and tried to implement it. However, it seems that the application is not being run properly.

The python code I am using via Jupyter notebook:

import subprocess
path = "C:/Users/duykh/source/repos/ConsoleApp2/ConsoleApp2/bin/Release/netcoreapp3.1/ConsoleApp2.exe"
subprocess.Popen(path) //#Also tried with .call and .run
                        //#subprocess.Popen([path, "argumentexample"]) doesn't work either

Output:

<subprocess.Popen at 0x2bcaeba49a0>

My question would be:

Why is it not being run (properly) and how do I properly run this application with one argument?

Maybe another option is to call/run shell or cmd from Python and run the application from there? — Capt. Frost
– Capt. Frost, Commented Aug 19, 2021 at 10:01

Capt. Frost · Accepted Answer · 2021-08-19 12:19:54Z

0

I've answered my own question. In a nutshell: I am pretty stupid.

Jupyter Notebook was running in the background and the application was being run there. That's why it didn't open a new prompt.
subprocess.Popen([path, "argument example"]) seems to work well for running a console application with an argument as input.

answered Aug 19, 2021 at 12:19

Capt. Frost

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