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# pandas.Series.list.len

Series.list.len()

  Return the length of each list in the Series.

  Computes the number of elements in each list entry. The result is a Series of integers with the same index as the original Series.

  Returns:
    pandas.Series

      The length of each list.

  See also

  `str.len`

    Python built-in function returning the length of an object.

  `Series.size`

    Returns the length of the Series.

  `StringMethods.len`

    Compute the length of each element in the Series/Index.

  Examples

      >>> import pyarrow as pa
      >>> s = pd.Series(
      ...     [
      ...         [1, 2, 3],
      ...         [3],
      ...     ],
      ...     dtype=pd.ArrowDtype(pa.list_(pa.int64())),
      ... )
      >>> s.list.len()
      0    3
      1    1
      dtype: int32[pyarrow]