k" href="topics.html#topics.calling_python_functions_and_met.rationale" title="Rationale">Rationale</a>
</h3></div></div></div>
<p>
          In general, to get Python arguments corresponding to a1...aN, a new Python
          object must be created for each one; should the C++ object be copied into
          that Python object, or should the Python object simply hold a reference/pointer
          to the C++ object? In general, the latter approach is unsafe, since the
          called function may store a r