Method __delitem__

python/python3/tornado/httputil.py:218–221

(self, name: str)

        return self._dict[_normalize_header(name)]

    def __delitem__(self, name: str) -> None:
        norm_name = _normalize_header(name)
        del self._dict[norm_name]
        del self._as_list[norm_name]

    def __len__(self) -> int:
        return len(self._dict)