maxframe.dataframe.Series.list.len

Series.list.len()

Get the length of each list of the Series.

Returns:

A Series with data type pandas.ArrowDtype(pyarrow.int64). Each element represents the length of the list, or None if the list is None.

Return type:

Series

Examples

Create a series with list type data.

>>> import maxframe.dataframe as md
>>> import pyarrow as pa
>>> from maxframe.lib.dtypes_extension import list_
>>> s = md.Series(
...     data=[[1, 2, 3], [4, 5, 6], None],
...     index=[1, 2, 3],
...     dtype=list_(pa.int64()),
... )
>>> s.execute()
1    [1, 2, 3]
2    [4, 5, 6]
3         <NA>
dtype: list<int64>[pyarrow]

>>> s.list.len().execute()
1       2
2       1
3    <NA>
dtype: int64[pyarrow]