polars.Series.arr.first

Series.arr.first() → Series

Get the first value of the sub-arrays.

Examples

>>> s = pl.Series(
...     "a", [[1, 2, 3], [4, 5, 6], [7, 8, 9]], dtype=pl.Array(pl.Int32, 3)
... )
>>> s.arr.first()
shape: (3,)
Series: 'a' [i32]
[
    1
    4
    7
]