HyukjinKwon commented on a change in pull request #25939:
[SPARK-27463][PYTHON][FOLLOW-UP] Miscellaneous documentation and code cleanup
of cogroup pandas UDF
URL: https://github.com/apache/spark/pull/25939#discussion_r328877434
##########
File path: python/pyspark/sql/cogroup.py
##########
@@ -96,3 +119,27 @@ def apply(self, udf):
def _extract_cols(gd):
df = gd._df
return [df[col] for col in df.columns]
+
+
+def _test():
+ import doctest
+ from pyspark.sql import SparkSession
+ import pyspark.sql.cogroup
+ globs = pyspark.sql.cogroup.__dict__.copy()
+ spark = SparkSession.builder\
+ .master("local[4]")\
+ .appName("sql.cogroup tests")\
+ .getOrCreate()
+ sc = spark.sparkContext
+ globs['sc'] = sc
Review comment:
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