cudf.core.column.lists.ListMethods.unique#

ListMethods.unique() → Series | Index[source]#

返回每个列表中的唯一元素。 元素的顺序不保证。

Returns:

Series or Index

示例

>>> s = cudf.Series([[1, 1, 2, None, None], None, [4, 4], []])
>>> s
0    [1.0, 1.0, 2.0, nan, nan]
1                         None
2                   [4.0, 4.0]
3                           []
dtype: list
>>> s.list.unique() # Order of list element is not guaranteed
0              [1.0, 2.0, nan]
1                         None
2                        [4.0]
3                           []
dtype: list