Method count

python/ray/data/_internal/table_block.py:254–256

(self, on: str, ignore_nulls: bool = False)

        return self._sample(k, sort_key)

    def count(self, on: str, ignore_nulls: bool = False) -> Optional[U]:
        accessor = BlockColumnAccessor.for_column(self._table[on])
        return accessor.count(ignore_nulls=ignore_nulls)

    def sum(self, on: str, ignore_nulls: bool) -> Optional[U]:
        self._validate_column(on)