[Ironpython-users] instropection in an embedded engine

Dino Viehland dinov at microsoft.com
Fri Sep 23 21:43:48 CEST 2011

__class__ exists on object in python and is then inherited by the other types.  When accessing a member from
C# you get its view of the world which doesn't include Python object members.  To get the Python type I suggest calling DynamicHelpers.GetPythonType.

Sent from my Windows Phone

-----Original Message-----
From: Hernán Foffani
Sent: Friday, September 23, 2011 9:12 AM
To: ironpython-users at python.org
Subject: [Ironpython-users] instropection in an embedded engine

Having the following Python code:

    class Plugin:
      def method(self):
    plugin = Plugin()

and an embedded ScriptScope instance in my .NET application,
the following C# works fine

   dynamic plugin = pythonEngine.GetVariable("plugin");
   var attrs = plugin.__class__.__dict__;

if Plugin python class was defined as an old-style class, but fails if
Plugin inherits from object (__class__ non existent).

Under the VS debugger the dynamic object plugin shows as having three
attributes .class, .dict and .slots_and_weakref (with dots in their names) but
no __class__ or __dict__.

I found that I could do something like plugin.method.im_class.__dict__ but
I'd rather stick with the common idiom.

Is it a known issue? Something related to the way I'm using the engine?

Thanks in advance,

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