ew_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
    <span class="mi">171</span>             <span class="k">raise</span> <span class="n">NewConnectionError</span><span class="p">(</span>
<span class="o">--&gt;</span> <span class="mi">172</span>                 <span class="bp">self</span><span class="p">,</span> <span class="s2">&quot;Failed to establish a new connection: </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span