polars.map#
- polars.map(exprs: Union[Sequence[str], Sequence[Expr]], f: Callable[[Sequence[Series]], Series], return_dtype: Optional[type[polars.datatypes.DataType]] = None) Expr[source]#
Map a custom function over multiple columns/expressions.
Produces a single Series result.
- Parameters:
- exprs
Input Series to f
- f
Function to apply over the input
- return_dtype
dtype of the output Series
- Returns:
- Expr