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richardbachman
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Comment #46807802
`row_index()` was also recently added. df.with_columns(pl.col.b + pl.row_index().is_between(1, 3)) # shape: (5, 2) # ┌─────┬─────┐ # │ a ┆ b │ # │ --- ┆ --- │ # │ i64 ┆ i64 │ # ╞══…