def _process_loop_helper(self, node, **kwargs):
if node.attr == LOOP_HELPER_INDEX:<EOL><INDENT>self.output.write('<STR_LIT>')<EOL><DEDENT>elif node.attr == LOOP_HELPER_INDEX_0:<EOL><INDENT>self.output.write('<STR_LIT>')<EOL><DEDENT>elif node.attr == LOOP_HELPER_FIRST:<EOL><INDENT>self.output.write('<STR_LIT>')<EOL><DEDENT>elif node.attr == LOOP_HELPER_LAST:<EOL><INDENT>self.output.write('<STR_LIT>')<EOL><DEDENT>elif node.attr == LOOP_HELPER_LENGTH:<EOL><INDENT>self.output.write('<STR_LIT>')<EOL><DEDENT>
Processes a loop helper e.g. {{ loop.first }} or {{ loop.index }}