def get(self, key):
group = self.get_node(key)<EOL>if group is None:<EOL><INDENT>raise KeyError('<STR_LIT>'.format(key=key))<EOL><DEDENT>return self._read_group(group)<EOL>
Retrieve pandas object stored in file

Parameters
----------
key : object

Returns
-------
obj : same type as object stored in file