an>&nbsp;attribute&nbsp;=&nbsp;string&nbsp;<span class="constructor">Asttypes</span>.loc&nbsp;*&nbsp;<span class="constructor">Parsetree</span>.payload<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;extension&nbsp;=&nbsp;string&nbsp;<span class="constructor">Asttypes</span>.loc&nbsp;*&nbsp;<span class="constructor">Parsetree</span>.payload<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;attributes&nbsp;=&nbsp;<span class="constructor">Parsetree</span>.attribute&nbsp;list<br>
&nbsp;&nbsp;<span c