[GitHub] HyukjinKwon commented on a change in pull request #23900: [SPARK-23836][PYTHON] Add support for StructType return in Scalar Pandas UDF

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HyukjinKwon commented on a change in pull request #23900: [SPARK-23836][PYTHON] Add support for StructType return in Scalar Pandas UDF
URL: https://github.com/apache/spark/pull/23900#discussion_r260871433
 
 

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 File path: python/pyspark/serializers.py
 ##########
 @@ -64,6 +64,7 @@
     from itertools import izip as zip, imap as map
 else:
     import pickle
+    basestring = unicode = str
 
 Review comment:
   Yes ..  there are some places that use this here and there. IIRC, we discussed about Python 2 drop in dev mailing list. I could get rid of it soon anyway ..

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