start <span class="op">=</span> <span class="fl">300</span>, end <span class="op">=</span> <span class="fl">330</span>, rate <span class="op">=</span> <span class="fl">0.25</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># compilation -------------------------------------------------------------</span></span></span>
<span class="r-in"><span></span></span>
<span cla