Beginning Python - From Novice to Professional

CHAPTER 17 ■ EXTENDING PYTHON 359
Once you have compiled the class (and put the .class file either in your current directory
or somewhere in your Java CLASSPATH), you can fire up Jython (with the jython command) and
import the class directly:
>>> import JythonTest
>>> test = JythonTest()
>>> test.greeting()
Hello, world!
See? There’s nothing to it.
■Tip If you’re working with Java, you can also use the command jythonc to compile your Python classes
into Java classes, which can then be imported into your Java programs.
Listing 17-2 shows a similar class in C#. Compile this with your compiler of choice (free
software available from http://www.mono-project.com).
Listing 17-2. A Simple C# Class (IronPythonTest.cs)
using System;
namespace FePyTest {
public class IronPythonTest {
public void greeting() {
Console.WriteLine("Hello, world!");
}
}
}
One way of using this in IronPython would be to compile the class to a DLL (see the documentation
for your C# installation for details) and update the relevant environment variables
(such as PATH) as needed. Then you should be able to use it as in the following (using the
FePyConsole prompt):
>>> import sys
>>> sys.LoadAssemblyFromFile("IronPythonTest.dll")
>>> import FePyTest
>>> f = FePyTest.IronPythonTest()
>>> f.greeting()