def get_node(self, key):
self._check_if_open()<EOL>try:<EOL><INDENT>if not key.startswith('<STR_LIT:/>'):<EOL><INDENT>key = '<STR_LIT:/>' + key<EOL><DEDENT>return self._handle.get_node(self.root, key)<EOL><DEDENT>except _table_mod.exceptions.NoSuchNodeError:<EOL><INDENT>return None<EOL><DEDENT>
return the node with the key or None if it does not exist