HelloPython (Calling Python from C#)

using System;
using IronPython.Hosting;
using Microsoft.Scripting.Hosting;

/* HelloPython.cs
 * Calls functions from an external script written in Python (see end comments)
 * Uses IronPython
 *
 * lots of help/hints from a post by Jeff Mercado on StackOverflow
 * http://stackoverflow.com/questions/7053172/how-can-i-call-ironpython-code-from-a-c-sharp-app
 */

namespace HelloPython
{
    class Program
    {
        static void Main(string[] args)
        {
            // Instantiate the engine and create a scope
            ScriptEngine pyEngine = Python.CreateEngine();
            dynamic scriptScope = pyEngine.CreateScope();

            // Load a script from file, passing the scope to get variables
            pyEngine.ExecuteFile("HelloPy.py", scriptScope);

            // Pull a variable from the scope
            string aMesssage = scriptScope.GetVariable("aMessage");

            // Do something with the variable
            Greeter welcomer = new Greeter(aMesssage);
            welcomer.Greet();

            // Call a function from the file
            scriptScope.SayHello();

            // Call a function that requires variables
            scriptScope.Flatter("Fisher");

            // Return a value from a function
            string someMessage = scriptScope.GetMessage();
            welcomer.Message = someMessage;
            welcomer.Greet();

        }
    }
}


/* HelloPy.py

import sys

aMessage = "Hello, this is Python"

def SayHello():
    print "Hello from Python"

def Flatter(person):
    print "You look lovely today " + person

def GetMessage():
    return "Python says hello"

 */