def include_yaml(self, node):
filename = self.construct_scalar(node)<EOL>if not filename.startswith('<STR_LIT:/>'):<EOL><INDENT>if self._root is None:<EOL><INDENT>raise Exception('<STR_LIT>'<EOL>'<STR_LIT>' % filename)<EOL><DEDENT>filename = os.path.join(self._root, self.construct_scalar(node))<EOL><DEDENT>with self.open(filename, '<STR_LIT:r>') as fin:<EOL><INDENT>return yaml.load(fin, Loader)<EOL><DEDENT>
load another yaml file from the path specified by node's value