On 01/04/2010 08:53 AM, Simon Pickles wrote:
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?
The attribute is spelled "__len__", not "length", and the pythonic way
to call it is "len(a)". Thus:
tuple a = ...;
unsigned int c = len(a);
should work fine.
Stefan
--
...ich hab' noch einen Koffer in Berlin...
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