def __delitem__(self, key):
        """Delete an item
        """
        section, subkey = self.__descend_sections(key)
        # At the last section, set the value
        try:
            del section[subkey]
        except __HOLE__ as _err:
            raise KeyError(
                "Key does not exist '%s'" % key)
dataset/ETHPy150Open duerrp/pyexperiment/pyexperiment/utils/HierarchicalMapping.py/HierarchicalMapping.__delitem__