zero323 commented on a change in pull request #35150:
URL: https://github.com/apache/spark/pull/35150#discussion_r781019892
##########
File path: python/pyspark/pandas/groupby.py
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@@ -2356,12 +2356,16 @@ def nunique(self, dropna: bool = True) -> FrameLike:
Name: value1, dtype: int64
"""
if dropna:
- stat_function = lambda col: F.countDistinct(col)
+
+ def stat_function(col: Column) -> Column:
+ return F.countDistinct(col)
Review comment:
`stat_function = F.countDistinct` should work as well, but I don't have
preference here.
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