polars.map¶
- polars.map(exprs: Union[List[str], List[polars.internals.expr.Expr]], f: Callable[[List[polars.internals.series.Series]], polars.internals.series.Series], return_dtype: Optional[Type[polars.datatypes.DataType]] = None) polars.internals.expr.Expr¶
Map a custom function over multiple columns/expressions and produce 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