r">msg</span> <span class="special">+</span> <span class="string">', '</span><span class="special">),</span>
  <span class="identifier">mpi</span><span class="special">.</span><span class="identifier">world</span><span class="special">.</span><span class="identifier">send</span><span class="special">(</span><span class="number">0</span><span class="special">,</span> <span class="number">1</span><span class="special">,</span> <span class="string">'world'</span><span class="special">)</span>
</pre>
<p>
      