dongjoon-hyun commented on code in PR #43635:
URL: https://github.com/apache/spark/pull/43635#discussion_r1380796957


##########
python/pyspark/sql/tests/test_udf.py:
##########
@@ -22,6 +22,8 @@
 import unittest
 import datetime
 
+from py4j.protocol import Py4JJavaError

Review Comment:
   This seems to be a leftover. Shall we remove?
   ```
   ./python/pyspark/sql/tests/test_udf.py:25:1: F401 
'py4j.protocol.Py4JJavaError' imported but unused
   from py4j.protocol import Py4JJavaError
   ^
   1     F401 'py4j.protocol.Py4JJavaError' imported but unused
   ```



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