core.py 文件源码

def _handle_ast_list(self, ast_list):
        """
        Find unreachable nodes in the given sequence of ast nodes.
        """
        for index, node in enumerate(ast_list):
            if isinstance(node, (ast.Break, ast.Continue, ast.Raise,
                                 ast.Return)):
                try:
                    first_unreachable_node = ast_list[index + 1]
                except IndexError:
                    continue
                class_name = node.__class__.__name__.lower()
                self._define(
                    self.unreachable_code,
                    class_name,
                    first_unreachable_node,
                    last_node=ast_list[-1],
                    message="unreachable code after '{class_name}'".format(
                        **locals()),
                    confidence=100)
                return