Method __delitem__

tornado/httputil.py:358–361

(self, name: str)

        return self._combined_cache[header]

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

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