def match_seq(self, nodes: list[NL], results: Optional[_Results] = None) -> bool:
        """
        Does this pattern exactly match a sequence of nodes?

        Default implementation for non-wildcard patterns.
        """
        if len(nodes) != 1:
            return False
        return self.match(nodes[0], results)

        Does this pattern exactly match a sequence of nodes?

        Default implementation for non-wildcard patterns.
        
src/blib2to3/pytree.py