pan> <span class="ow">not</span> <span class="ow">in</span> <span class="n">FREQUENCIES</span><span class="p">:</span>
</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a>        <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;Invalid freq </span><span class="si">{</span><span class="n">freq</span><span class="si">!r}</span><span class="s2">&quot;</span><span class="p">)</span>
</span><span id="L-19"