Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6716#discussion_r32088989
--- Diff: python/pyspark/sql/functions.py ---
@@ -348,6 +358,24 @@ def randn(seed=None):
return Column(jc)
+@since(1.5)
+def e():
+ """Returns the double value that is closer than any other to e, the
base of the natural
+ logarithms.
+ """
+ import math
+ return Column(math.e)
--- End diff --
and add a docstring test?
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