How to access elements of boost::python::tuple in C++?

Question

I have a C++ code called from Python. I have list of tuples passed from python:

boost::python::list<boost::python::tuple>

How do I access the elements of boost::python::tuple?

Any example would be handy. From the documentation, I can't find the accessor methods.

Answer 1

I was able to use the boost::python::extract<int>( ) method.

For example for a python tuple containing an integer and a string:

Python side:

t = (123, 'some string')

C++ side:

void work_with_tuple(boost::python::tuple t)
{
   if (boost::python::len(t) != 2) throw std::invalid_argument("bad");

   int extracted_int = boost::python::extract<int>(t[0]);
   std::string extracted_string = boost::python::extract<std::string>(t[1]);
}