xinrong-databricks commented on a change in pull request #35782:
URL: https://github.com/apache/spark/pull/35782#discussion_r836670472
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File path: python/pyspark/pandas/series.py
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@@ -1647,6 +1647,83 @@ def to_list(self) -> List:
tolist = to_list
+ def duplicated(self, keep: Union[bool, str] = "first") -> "Series":
+ """
+ Indicate duplicate Series values.
+
+ Duplicated values are indicated as ``True`` values in the resulting
+ Series. Either all duplicates, all except the first or all except the
+ last occurrence of duplicates can be indicated.
+
+ Parameters
+ ----------
+ keep : {'first', 'last', False}, default 'first'
+ Method to handle marking duplicates:
+ - 'first' : Mark duplicates as ``True`` except for the first
+ occurrence.
+ - 'last' : Mark duplicates as ``True`` except for the last
+ occurrence.
+ - ``False`` : Mark all duplicates as ``True``.
+
+ Returns
+ -------
+ Series
+ Series indicating whether each value has occurred in the
+ preceding values
+
+ See Also
+ --------
+ Index.duplicated : Equivalent method on pandas.Index.
Review comment:
Good catch! Modified.
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