polars.DataFrame.replace_at_idx¶
- DataFrame.replace_at_idx(index: int, series: polars.internals.series.Series) None ¶
Replace a column at an index location.
- Parameters
- index
Column index.
- series
Series that will replace the column.
Examples
>>> df = pl.DataFrame( ... { ... "foo": [1, 2, 3], ... "bar": [6, 7, 8], ... "ham": ["a", "b", "c"], ... } ... ) >>> x = pl.Series("apple", [10, 20, 30]) >>> df.replace_at_idx(0, x) >>> df shape: (3, 3) ┌───────┬─────┬─────┐ │ apple ┆ bar ┆ ham │ │ --- ┆ --- ┆ --- │ │ i64 ┆ i64 ┆ str │ ╞═══════╪═════╪═════╡ │ 10 ┆ 6 ┆ a │ ├╌╌╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌┤ │ 20 ┆ 7 ┆ b │ ├╌╌╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌┤ │ 30 ┆ 8 ┆ c │ └───────┴─────┴─────┘