[C++-sig] How do I wrap a C++ object to a PyObject*

[Ralf W. Grosse-Kunstleve]

--- David Abrahams <dave at boost-consulting.com> wrote:
> "Bjorn Pettersen" <BPettersen at NAREX.com> writes:
> > I've looked through the documentation but haven't found anything
> > obvious...
> 
> Let's see. You have a wrapped C++ class somewhere?
> If so, you can write in __main__:
> 
>   import some_boost_python_module
>   x = some_boost_python_module.some_class(some_arg)
> 
> But this is trivially explained in the docs, so you must mean
> something else...

I believe he wants to do this from C++. I don't know what __main__
is, but I am guessing that his problem is solved by using a
construct like this:

    scope().attr("key") = value;

which I believe is just a shorthand for

    scope().attr("key") = object(value);

This sets an attribute in the importing module.
value can be any object that is convertible from C++ to Python,
including but not limited to instances of a user-defined classes
X with a corresponding class_<X> statement.

Ralf


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