Series(['dog',
        ...                 '',
        ...                 5,
        ...                 {'foo' : 'bar'},
        ...                 [2, 3, 5, 7],
        ...                 ('one', 'two', 'three')])
        >>> s
        0                  dog
        1
        2                    5
        3       {'foo': 'bar'}
        4         [2, 3, 5, 7]
        5    (one, two, three)
        dtype: object
        >>> s.str.len()
        0    3.0
        1    0.0
        2    NaN
        3    1.0
        4    4.0
        5    3.0
        dtype: float64
        FrJ