</span>(<span>self)</span>
</code></dt>
<dd>
<div class="desc"><p>Yields all intervals which start at the last known start offset.</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def lasts(self):
    &#34;&#34;&#34;
    Yields all intervals which start at the last known start offset.
    &#34;&#34;&#34;
    laststart = None
    for intvl in reversed(self._by_start):
        if laststart is None:
            laststart = intvl[0]
            yi