pan> <span class="keyword">const</span> <span class="special">&amp;</span><span class="identifier">value</span><span class="special">);</span></pre>
<div class="variablelist">
<p class="title"><b></b></p>
<dl class="variablelist">
<dt><span class="term">Requires</span></dt>
<dd><p>
                The argument must convertible to python.
              </p></dd>
<dt><span class="term">Effects</span></dt>
<dd><p>
                Assigns default value for the keyword.
              </p></dd>
<dt><span class="t