parameters: (self, attachment_id)
return_statement: return None
docstring: Returns a 1-based index corresponding to the position
          of the attachment_id in the queue.  If the attachment is
          not in this queue, this returns None
docstring_summary: Returns a 1-based index corresponding to the position
          of the attachment_id in the queue.  If the attachment is
          not in this queue, this returns None
docstring_tokens: Returns a 1 - based index corresponding to the position of the attachment_id in the queue . If the attachment is not in this queue this returns None
function: def display_position_for_attachment(self, attachment_id):
          """Returns a 1-based index corresponding to the position
          of the attachment_id in the queue.  If the attachment is
          not in this queue, this returns None"""
          if attachment_id in self.item_ids:
              return self.item_ids.index(attachment_id) + 1
          return None
function_tokens: def display_position_for_attachment ( self , attachment_id ) : if attachment_id in self . item_ids : return self . item_ids . index ( attachment_id ) + 1 return None