pan class="o">.</span><span class="n">exists</span><span class="p">()</span>
<span class="k">assert</span> <span class="p">(</span><span class="n">path_fail</span><span class="o">/</span><span class="s1">&#39;script_fail.sh&#39;</span><span class="p">)</span><span class="o">.</span><span class="n">exists</span><span class="p">()</span>
<span class="k">assert</span> <span class="p">(</span><span class="n">path_complete</span><span class="o">/</span><span class="s1">&#39;script_succ.sh&#39;</span><span class=