lass="s1">&#39;ERROR: The number of job chunks is negative!</span><span class="se">\n</span><span class="s1">&#39;</span>
                         <span class="s1">&#39;It has to be a positive number!&#39;</span><span class="p">)</span>
    <span class="k">elif</span> <span class="n">job_chunk</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
        <span class="n">job_chunk</span> <span class="o">=</span> <span class="kc">None</span>
    <span class="k">else</span><span cl