polars.mean#
- polars.mean(column: str) Expr [source]#
- polars.mean(column: Series) float
Get the mean value.
Examples
>>> df = pl.DataFrame({"a": [1, 8, 3], "b": [4, 5, 2], "c": ["foo", "bar", "foo"]}) >>> df.select(pl.mean("a")) shape: (1, 1) ┌─────┐ │ a │ │ --- │ │ f64 │ ╞═════╡ │ 4.0 │ └─────┘ >>> pl.mean(df["a"]) 4.0