an class="k">else</span><span class="p">:</span>
            <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;We only support SN1 and SN3 at this time.&#39;</span><span class="p">)</span>
            <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;Terminating the program&#39;</span><span class="p">)</span>
            <span class="n">exit</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">resolution