def __missing__(self, key):
        if self.default_factory is None:
            raise KeyError(key)
        else:
            ret = self[key] = self.default_factory(name=key)
            return ret
def sm_name(section: str) -> str:
    """:return: name of the submodule as parsed from the section name"""
    section = section.strip()
    return section[11:-1]