zero323 commented on pull request #30413:
URL: https://github.com/apache/spark/pull/30413#issuecomment-733564631


   > @zero323, the only reason I have chosen `cols` over `*cols` is that I felt 
odds to just document this such as `*cols : tuple`, and thought `` cols: str, 
:class:`Column` ... `` is clearer.
   
   That's true.. I am also concerned, how far can we go, without effectively 
duplicating annotations in a natural language.


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