polars.Series.extend_constant#

Series.extend_constant(value: IntoExpr, n: int | IntoExprColumn) → Series[source]#

Extremely fast method for extending the Series with ‘n’ copies of a value.

Parameters:

value: A constant literal value or a unit expressioin with which to extend the expression result Series; can pass None to extend with nulls.
n: The number of additional values that will be added.

Examples

>>> s = pl.Series([1, 2, 3])
>>> s.extend_constant(99, n=2)
shape: (5,)
Series: '' [i64]
[
        1
        2
        3
        99
        99
]