[C++-sig] Re: to_python (by-value) converter

[Simon Ouellet]

I attached a complete reproducible test case.
The ouptut that I got is:

The following error occur in python converter:
================================================
TypeError: No to_python (by-value) converter found for C++ type: 3Foo
================================================
3
The following error occur in python interpreter:
================================================
Traceback (most recent call last):
  File "<string>", line 4, in ?
NameError: name 'SomeFoo' is not defined
================================================




Thanks



On Wed, 2003-09-10 at 23:42, David Abrahams wrote:
> Simon Ouellet <simon.ouellet at orthosoft.ca> writes:
> 
> > Hi,
> >
> > I'm using boost::python for embedding python into my application.
> >
> > I defined a module that containt a class_<Vector>.
> >
> > I can successfully instantiate a Vector in the embedded python but
> > I cannot create a python::object containing a Vector in C++
> >
> > Vector aVector;
> > python::object(aVector);
> > this statement gave me an error:
> >
> > TypeError: No to_python (by-value) converter found for C++ type:
> > N3Osm13MotionCapture6VectorE
> >
> >
> > Where N3Osm13MotionCapture6VectorE is my class Vector that has a default
> > copy constructor publicly available. 
> >
> > What could be the problem? and what should I do to fix it?
> 
> I can only guess that the C++ type "Vector" that you're wrapping below
> is not the same as Osm::MotionCapture::Vector, the type in the error
> message.  Could you post a complete, reproducible test case?
> 
> Did you base your code on the contents of the
> libs/python/test/embedding.cpp file?
> 
> For what it's worth, this:
> 
> >  mGlobals["SomeVector"] = python::object(aVector);
>                             ^^^^^^^^^^^^^^^       ^
> 
> is redundant.
> 
>    mGlobals["SomeVector"] = aVector;
> 
> is equivalent.
> 
> -- 
> Dave Abrahams
> Boost Consulting
> www.boost-consulting.com
> 
> 
> _______________________________________________
> C++-sig mailing list
> C++-sig at python.org
> http://mail.python.org/mailman/listinfo/c++-sig
-- 
_________________________________________________________
Simon Ouellet		email: simon.ouellet at orthosoft.ca
Programmeur 		tel:   514-861-4074 #269
Orthosoft Inc.		fax:   514-866-2197

-------------- next part --------------
A non-text attachment was scrubbed...
Name: Embedded.cc
Type: text/x-c++
Size: 1868 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/cplusplus-sig/attachments/20030911/458a3f0a/attachment.bin>