Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20390#discussion_r163721837
--- Diff: python/pyspark/sql/dataframe.py ---
@@ -1881,6 +1881,15 @@ def toDF(self, *cols):
jdf = self._jdf.toDF(self._jseq(cols))
return DataFrame(jdf, self.sql_ctx)
+ @since(2.3)
+ def colRegex(self, colName):
+ """
+ Selects column based on the column name specified as a regex and
return it
+ as :class:`Column`.
--- End diff --
Shall we add a doctest and `:param ` too while we are here?
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