[IronPython] **kwargs and __getattr__ handling in csharp functions and classes?

[Alex News]

Much appreciated, I will give that a try.  In what namespace is
DynamicObject declared?  (I assume the required assemblies are already
referenced if I'm pulling in IronPython).

Thanks again,
Alex


On Tue, Apr 14, 2009 at 11:16 AM, Dino Viehland <dinov at microsoft.com> wrote:
> For kwargs you need to decorate the function w/ a ParamDictionary attribute such as:
>
> public void __init__(CodeContext/*!*/ context, object o, [ParamDictionary] IAttributesCollection kwArgs)
>
> For __getattr__ IronPython will recognize a special name "GetBoundMember" method such as:
>
> using System;
> using System.Runtime.CompilerServices;
>
> public class Foo {
>    [SpecialName]
>    public object GetBoundMember (string name) {
>        return name;
>    }
> }
>
>
> You can also do "GetCustomMember" which is like __getattribute__.  But for this one what you really want to do is inherit directly from the DynamicObject class and override TryGetMember.  Then it'll work not only w/ Python but w/ other DLR based languages as well (e.g. C#, VB.NET, IronRuby, etc...).
>
>
>> -----Original Message-----
>> From: users-bounces at lists.ironpython.com [mailto:users-
>> bounces at lists.ironpython.com] On Behalf Of Alex News
>> Sent: Tuesday, April 14, 2009 7:32 AM
>> To: users at lists.ironpython.com
>> Subject: [IronPython] **kwargs and __getattr__ handling in csharp
>> functions and classes?
>>
>> I would like to write some functions and classes in csharp that
>> interact nicely python.  I would like to write a function that can
>> respond to keyword arguments, and a class that can dynamically resolve
>> __getattr__.
>>
>> For the function I tried creating a function that takes a
>> IronPython.Runtime.PythonDictionary, but did not work.  For a class I
>> tried creating a function that have a method __getattr__, but that
>> failed too.
>>
>> I see there is a IronPython.Runtime.PythonFunction and some other
>> interesting classes in the Runtime, but it is not apparent exactly how
>> I could use them.
>>
>> I can, luckily, fudge much of what I want to do by creating small
>> python classes and functions in python to proxy the values to
>> underlying csharp classes.  However thing would be cleaner if I could
>> do it directly in csharp.
>>
>> Thanks in advance for any suggestions.
>>
>> Alex
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