title: boost::python pass list of lists to c++ function
body: <p>I am playing with boost.python and I have the following question:</p>
  
  <p>in python I have a list of lists:</p>
  
  <pre><code>l = [[1, 2, 3], [4, 5, 6]]
  </code></pre>
  
  <p>I have a c++ function like:</p>
  
  <pre><code>void do(std::vector&lt;std::vector&lt;int&gt;&gt; v);
  </code></pre>
  
  <p>Obviously I cannot pass l to the above function.</p>
  
  <p>How I can pass a list of list to a function as above?</p>