polars.Series.dt.is_leap_year#

Series.dt.is_leap_year() → Series[source]#

Determine whether the year of the underlying date representation is a leap year.

Applies to Date and Datetime columns.

Returns:

Series: Series of data type Boolean.

Examples

>>> from datetime import date
>>> s = pl.Series(
...     "date", [date(2000, 1, 1), date(2001, 1, 1), date(2002, 1, 1)]
... )
>>> s.dt.is_leap_year()
shape: (3,)
Series: 'date' [bool]
[
        true
        false
        false
]