polars.select#
- polars.select(exprs: IntoExpr | Iterable[IntoExpr] | None = None, *more_exprs: IntoExpr, **named_exprs: IntoExpr) DataFrame [source]#
Run polars expressions without a context.
This is syntactic sugar for running
df.select
on an empty DataFrame.- Parameters:
- exprs
Expression or expressions to run.
- *more_exprs
Additional expressions to run, specified as positional arguments.
- **named_exprs
Additional expressions to run, specified as keyword arguments. The expressions will be renamed to the keyword used.
- Returns:
- DataFrame
Examples
>>> foo = pl.Series("foo", [1, 2, 3]) >>> bar = pl.Series("bar", [3, 2, 1]) >>> pl.select(pl.min([foo, bar])) shape: (3, 1) ┌─────┐ │ min │ │ --- │ │ i64 │ ╞═════╡ │ 1 │ │ 2 │ │ 1 │ └─────┘