polars.lazyframe.group_by.LazyGroupBy.all

LazyGroupBy.all() → LazyFrame

Aggregate the groups into Series.

Examples

>>> ldf = pl.DataFrame(
...     {
...         "a": ["one", "two", "one", "two"],
...         "b": [1, 2, 3, 4],
...     }
... ).lazy()
>>> ldf.group_by("a", maintain_order=True).all().collect()
shape: (2, 2)
┌─────┬───────────┐
│ a   ┆ b         │
│ --- ┆ ---       │
│ str ┆ list[i64] │
╞═════╪═══════════╡
│ one ┆ [1, 3]    │
│ two ┆ [2, 4]    │
└─────┴───────────┘