polars.LazyFrame.mean#
- LazyFrame.mean() LazyFrame [source]#
Aggregate the columns in the LazyFrame to their mean value.
Examples
>>> lf = pl.LazyFrame( ... { ... "a": [1, 2, 3, 4], ... "b": [1, 2, 1, 1], ... } ... ) >>> lf.mean().collect() shape: (1, 2) ┌─────┬──────┐ │ a ┆ b │ │ --- ┆ --- │ │ f64 ┆ f64 │ ╞═════╪══════╡ │ 2.5 ┆ 1.25 │ └─────┴──────┘