holds
          </p>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="function_invocation_and_creation.boost_python_args_hpp.class_arg"></a><a class="link" href="function_invocation_and_creation.html#function_invocation_and_creation.boost_python_args_hpp.class_arg" title="Class arg">Class
        <code class="computeroutput"><span class="identifier">arg</span></code></a>
</h3></div></div></div>
<p>
          The objects of class arg are keyword-expressions hol