def get_storer(self, key):
group = self.get_node(key)<EOL>if group is None:<EOL><INDENT>raise KeyError('<STR_LIT>'.format(key=key))<EOL><DEDENT>s = self._create_storer(group)<EOL>s.infer_axes()<EOL>return s<EOL>
return the storer object for a key, raise if not in the file