HyukjinKwon commented on a change in pull request #33054:
URL: https://github.com/apache/spark/pull/33054#discussion_r657770107
##########
File path: python/pyspark/sql/dataframe.py
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@@ -2695,6 +2695,62 @@ def writeTo(self, table):
"""
return DataFrameWriterV2(self, table)
+ def to_pandas_on_spark(self, index_col=None):
+ """
+ Converts the existing DataFrame into a pandas-on-Spark DataFrame.
+
+ If a pandas-on-Spark DataFrame is converted to a Spark DataFrame and
then back
+ to pandas-on-Spark, it will lose the index information and the
original index
+ will be turned into a normal column.
+
+ Parameters
+ ----------
+ index_col: str or list of str, optional, default: None
+ Index column of table in Spark.
+
+ See Also
+ --------
+ DataFrame.to_spark
Review comment:
`pyspark.pandas.DataFrame.to_spark`
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