HyukjinKwon commented on a change in pull request #34389:
URL: https://github.com/apache/spark/pull/34389#discussion_r737067704
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File path: python/pyspark/pandas/base.py
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@@ -439,6 +440,7 @@ def __rxor__(self, other: Any) -> SeriesOrIndex:
return self._dtype_op.rxor(self, other)
def __len__(self) -> int:
+ log_advice("`len` is expensive. Be aware of use it unless it is
absolutely necessary.")
Review comment:
I wonder if we should better remove this one .. cc @ueshin
@xinrong-databricks FYI
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