[GitHub] spark pull request #16537: [SPARK-19165][PYTHON][SQL] UserDefinedFunction.__...

[zero323 <gi...@git.apache.org>]

Github user zero323 commented on a diff in the pull request:

    https://github.com/apache/spark/pull/16537#discussion_r125755849
  
    --- Diff: python/pyspark/sql/functions.py ---
    @@ -1949,6 +1949,14 @@ def _create_judf(self):
             return judf
     
         def __call__(self, *cols):
    +        for c in cols:
    +            if not isinstance(c, (Column, str)):
    --- End diff --
    
    @HyukjinKwon Sorry for a delayed response, I am seldom online these days. You're right, it looks like an issue. I'll take a look at this, when I have more time


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