 by
<a class="reference external" href="http://docs.python.org/3/library/stdtypes.html#str.format">str.format</a> in
Python:</p>
<div class="code c++ highlight-c++"><div class="highlight"><pre><span></span><span class="n">fmt</span><span class="o">::</span><span class="n">format</span><span class="p">(</span><span class="s">&quot;The answer is {}.&quot;</span><span class="p">,</span> <span class="mi">42</span><span class="p">);</span>
</pre></div>
</div>
<p>The <code class="docutils literal"><span class="pr