Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/19325#discussion_r140623236 --- Diff: python/pyspark/sql/tests.py --- @@ -3308,12 +3306,12 @@ def test_vectorized_udf_invalid_length(self): from pyspark.sql.functions import pandas_udf, col import pandas as pd df = self.spark.range(10) - raise_exception = pandas_udf(lambda: pd.Series(1), LongType()) + raise_exception = pandas_udf(lambda i: pd.Series(1), LongType()) --- End diff -- Maybe `lambda _: ...`.
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