polars.LazyFrame.sum#
- LazyFrame.sum() LazyFrame [source]#
Aggregate the columns in the LazyFrame to their sum value.
Examples
>>> lf = pl.LazyFrame( ... { ... "a": [1, 2, 3, 4], ... "b": [1, 2, 1, 1], ... } ... ) >>> lf.sum().collect() shape: (1, 2) ┌─────┬─────┐ │ a ┆ b │ │ --- ┆ --- │ │ i64 ┆ i64 │ ╞═════╪═════╡ │ 10 ┆ 5 │ └─────┴─────┘