p;:&nbsp;<span class="constructor">Parsetree</span>.attributes;<br>
&nbsp;&nbsp;}<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;pattern_desc&nbsp;=<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Ppat_any</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">Ppat_var</span>&nbsp;<span class="keyword">of</span>&nbsp;string&nbsp;<span class="constructor">Asttypes</span>.loc<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&n