[C++-sig] Boost Python Tuple - Find length of tuple?

[Brian O'Kennedy]

You could try this instead: (untested!)

      using namespace boost::python;
      tuple a = make_tuple("hello", 42);
      std::cout << "Length = " << boost::python::len(a) << std::endl;  //
explicit namespace not needed

hth,
 Brian

2010/1/4 Simon Pickles <sipickles at googlemail.com>

> Hello,
>
> I have a simple question. How do I find out in c++ how many elements are
> contained within a boost::python::tuple?
>
> I tried this:
>
>       using namespace boost::python;
>       tuple a = make_tuple("hello", 42);
>       object b = a.attr("length"); // exception
>       unsigned int c = extract<unsigned int>(b);
>       assert( c==2 );
>
> AttributeError: 'tuple' object has no attribute 'length'
>
> Am I missing something?
>
> Thanks
>
> Si
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