Question

So if I have a class like:

CustomVal 

I want to be able to represent a literal value, so like setting it in the constructor:

val = CustomVal ( 5 )  val.SomeDefaultIntMethod 

Basically I want the CustomVal to represent whatever is specified in the constructor.

I am not talking about custom methods that know how to deal with CustomVal, but rather making it another value that I need.

Is this possible?

Btw 5 is just an example, in reality it’s a custom COM type that I want to instance easily.

So by referencing CustomVal, I will have access to int related functionality (for 5), or the functionality of the object that I want to represent (for COM).

So if the COM object is RasterizedImage, then I will have access to its methods directly:

CustomVal.Raster () ... 

EDIT: This is what I mean: I don’t want to access as an attribute, but the object itself:

CustomVal 

instead of:

CustomVal.SomeAttribute 

The reason I want this is because, the COM object is too involved to initialize and by doing it this way, it will look like the original internal implementation that app offers.

Answer 1

The usual way to wrap an object in Python is to override __getattr__ in your class:

class CustomVal(object):     def __init__(self, value):         self.value = value      def __getattr__(self, attr):         return getattr(self.value, attr) 

So then you can do

>>> obj = CustomVal(wrapped_obj) >>> obj.SomeAttributeOfWrappedObj 

You can also override __setattr__ and __delattr__ to enable setting and deleting attributes, respectively (see the Python library documentation).