cudf.core.accessors.lists.ListMethods.unique

ListMethods.unique() → Series | Index

Returns the unique elements in each list. The ordering of elements is not guaranteed.

Returns:

Series or Index

Examples

>>> s = cudf.Series([[1, 1, 2, None, None], None, [4, 4], []])
>>> s
0    [1, 1, 2, None, None]
1                     None
2                   [4, 4]
3                       []
dtype: list
>>> s.list.unique() # Order of list element is not guaranteed
0    [1, 2, None]
1            None
2             [4]
3              []
dtype: list