zhengruifeng commented on code in PR #38734:
URL: https://github.com/apache/spark/pull/38734#discussion_r1028812420


##########
python/pyspark/sql/connect/dataframe.py:
##########
@@ -122,6 +122,20 @@ def withPlan(cls, plan: plan.LogicalPlan, session: 
"RemoteSparkSession") -> "Dat
         new_frame._plan = plan
         return new_frame
 
+    def isEmpty(self) -> bool:
+        """Returns ``True`` if this :class:`DataFrame` is empty.

Review Comment:
   this doc was copied from pyspark and scala api. I think the dataframe itself 
is expected to be not None, otherwise, this method can not be called.



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