polars.Expr.reinterpret#
- Expr.reinterpret(*, signed: bool = True) Expr [source]#
Reinterpret the underlying bits as a signed/unsigned integer.
This operation is only allowed for 64bit integers. For lower bits integers, you can safely use that cast operation.
- Parameters:
- signed
If True, reinterpret as
pl.Int64
. Otherwise, reinterpret aspl.UInt64
.
Examples
>>> s = pl.Series("a", [1, 1, 2], dtype=pl.UInt64) >>> df = pl.DataFrame([s]) >>> df.select( ... [ ... pl.col("a").reinterpret(signed=True).alias("reinterpreted"), ... pl.col("a").alias("original"), ... ] ... ) shape: (3, 2) ┌───────────────┬──────────┐ │ reinterpreted ┆ original │ │ --- ┆ --- │ │ i64 ┆ u64 │ ╞═══════════════╪══════════╡ │ 1 ┆ 1 │ │ 1 ┆ 1 │ │ 2 ┆ 2 │ └───────────────┴──────────┘