Yikun commented on code in PR #36464:
URL: https://github.com/apache/spark/pull/36464#discussion_r870137936
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python/pyspark/pandas/groupby.py:
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@@ -2228,6 +2299,20 @@ def tail(self, n: int = 5) -> FrameLike:
6 5
9 8
Name: b, dtype: int64
+
+ # Supports Groupby positional indexing Since pandas on Spark 3.4 (with
pandas 1.4+)
+ >>> df = ps.DataFrame([["g", "g0"],
+ ... ["g", "g1"],
+ ... ["g", "g2"],
+ ... ["g", "g3"],
+ ... ["h", "h0"],
+ ... ["h", "h1"]], columns=["A", "B"])
+ >>> df.groupby("A").tail(-1) # doctest: +SKIP
Review Comment:
I record a jira SPARK-39150 as reminder to remove `# doctest: +SKIP` when we
upgrade pandas to 1.4.x
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