[C++-sig] Re: [Boost-Users] Python and hello.World class example

[Joel de Guzman]

David Brownell wrote:
> I am trying to run the hello.World class example in the tutorial and
> am running into problems.  I can compile the dll fine, and then copy
> the dll (and the boost_python.dll) into my python directory, and then
> start my Python interpreter.  The library will import, but when I
> call either the greet or set methods, I get the following errors from
> within the Python interpreter:
> 
> [greet]:
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> TypeError: unbound method Boost.Python.function object must be called
> with World instance as first argument (got str instance instead)
> 
> [set]:
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in ?
> TypeError: unbound method Boost.Python.function object must be called
> with World instance as first argument (got nothing instead)
> 
> I am failrly new to Python and even newer to Boost.Python, so there
> may be something very basic that I am missing.  I am using boost
> 1.30, bjam to compile, MSVC 7.1, Python 2.2, and Windows XP.  Note
> that I can compile and successfully execute the inital Hello World
> example (hello.cpp in the tutorial subdir).

Hi David,

FYI, Boost.Python has its own mailing list. It would be nice to see you there ;-)
http://mail.python.org/mailman/listinfo/c++-sig

Anyway, I'm a bit lost. Could you please copy and paste the exact Python
session? Have you tried the example session in the tutorial?:

    >>> import hello
    >>> planet = hello.World()
    >>> planet.set('howdy')
    >>> planet.greet()
    'howdy'

Regards,
-- 
Joel de Guzman
joel at boost-consulting.com
http://www.boost-consulting.com
http://spirit.sf.net