[IronPython] Creating Python classes in IP2

[Slide]

I use the following for finding a class that implements a certain interface.

IAttributesCollection attrs =
IronPython.Runtime.Types.PythonModuleOps.Get__dict__(__main__);
                foreach (KeyValuePair<object, object> attr in attrs)
                {
                    IronPython.Runtime.Types.PythonType attr_type =
attr.Value as IronPython.Runtime.Types.PythonType;
                    if (attr_type != null)
                    {
                        foreach (IronPython.Runtime.Types.PythonType
dt in attr_type.BaseTypes)
                        {
                            if (dt.UnderlyingSystemType != null &&
dt.UnderlyingSystemType == typeof(T))
                            {
                                CodeContext context = new
CodeContext(__main__.Scope, _context, new ModuleContext(__main__));
                                inst = (T)attr_type.CreateInstance(context);
                                break;
                            }
                        }
                    }
                }


Is there a way that is more portable between the different languages?

On Sun, Mar 30, 2008 at 4:53 AM, Curt Hagenlocher <curt at hagenlocher.org> wrote:
> On Sun, Mar 30, 2008 at 2:59 AM, Paul Turbett <sls at iinet.net.au> wrote:
>  >
>  > I've looked through the DLR hosting spec, and experimented a bit, but I
>  > can't see how to get the same thing working with DLR hosting. So, how do
>  > I create instances of python classes from C#?
>
>  This is what works for me:
>
>     ScriptRuntime runtime = ScriptRuntime.Create();
>     ScriptEngine engine = runtime.GetEngine("py");
>
>     // These next two lines are needed if you expect to be able to import System
>     // without manually loading the assembly through Python
>     // runtime.LoadAssembly(typeof(string).Assembly);
>     // runtime.LoadAssembly(typeof(System.Diagnostics.Debug).Assembly);
>
>     // File foo.py contains class Foo
>     ScriptScope scope = runtime.ExecuteFile("foo.py");
>     object theClass;
>     scope.TryGetVariable("Foo", out theClass);
>     object theValue = PythonCalls.Call(theClass);
>
>  --
>  Curt Hagenlocher
>  curt at hagenlocher.org
>
>
> _______________________________________________
>  Users mailing list
>  Users at lists.ironpython.com
>  http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
>



-- 
slide-o-blog
http://slide-o-blog.blogspot.com/