HyukjinKwon commented on a change in pull request #34389:
URL: https://github.com/apache/spark/pull/34389#discussion_r736432926
##########
File path: python/pyspark/pandas/frame.py
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@@ -4786,6 +4815,11 @@ def to_spark_io(
to_spark_io.__doc__ = SparkFrameMethods.to_spark_io.__doc__
def to_spark(self, index_col: Optional[Union[str, List[str]]] = None) ->
SparkDataFrame:
+ if index_col is None:
Review comment:
You can even do it:
```suggestion
index_col is None and log_advice(
...
)
```
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