updated docs

Author: niemasd

docs/_modules/treeswift/Tree.html

@@ -1010,14 +1010,16 @@ <h1>Source code for treeswift.Tree</h1><div class="highlight"><pre>
             <span class="k">except</span><span class="p">:</span>
                 <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">&quot;labels must be iterable&quot;</span><span class="p">)</span>
         <span class="n">l2n</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">label_to_node</span><span class="p">(</span><span class="n">labels</span><span class="p">)</span>
-        <span class="n">count</span> <span class="o">=</span> <span class="p">{}</span>
-        <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">l2n</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
-            <span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">traverse_ancestors</span><span class="p">():</span>
-                <span class="k">if</span> <span class="n">a</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">count</span><span class="p">:</span>
-                    <span class="n">count</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span>
-                <span class="n">count</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
-                <span class="k">if</span> <span class="n">count</span><span class="p">[</span><span class="n">a</span><span class="p">]</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="n">l2n</span><span class="p">):</span>
-                    <span class="k">return</span> <span class="n">a</span>
+        <span class="n">count</span> <span class="o">=</span> <span class="p">{};</span> <span class="n">q</span> <span class="o">=</span> <span class="n">deque</span><span class="p">(</span><span class="n">l2n</span><span class="o">.</span><span class="n">values</span><span class="p">())</span>
+        <span class="k">while</span> <span class="nb">len</span><span class="p">(</span><span class="n">q</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
+            <span class="n">curr</span> <span class="o">=</span> <span class="n">q</span><span class="o">.</span><span class="n">popleft</span><span class="p">()</span>
+            <span class="k">if</span> <span class="n">curr</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">count</span><span class="p">:</span>
+                <span class="n">count</span><span class="p">[</span><span class="n">curr</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span>
+            <span class="n">count</span><span class="p">[</span><span class="n">curr</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span>
+            <span class="k">if</span> <span class="n">count</span><span class="p">[</span><span class="n">curr</span><span class="p">]</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="n">l2n</span><span class="p">):</span>
+                <span class="k">return</span> <span class="n">curr</span>
+            <span class="k">if</span> <span class="n">curr</span><span class="o">.</span><span class="n">parent</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+                <span class="n">q</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">curr</span><span class="o">.</span><span class="n">parent</span><span class="p">)</span>
         <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">&quot;There somehow does not exist an MRCA for the given labels&quot;</span><span class="p">)</span></div>