polars.Series.list.len#

Series.list.len() → Series[source]#

Return the number of elements in each list.

Null values are treated like regular elements in this context.

Returns:
Series

Series of data type UInt32.

Examples

>>> s = pl.Series([[1, 2, None], [5]])
>>> s.list.len()
shape: (2,)
Series: '' [u32]
[
    3
    1
]