Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/20838#discussion_r211688118
--- Diff: python/pyspark/streaming/tests.py ---
@@ -206,6 +207,38 @@ def func(dstream):
expected = [[len(x)] for x in input]
self._test_func(input, func, expected)
+ def test_slice(self):
+ """Basic operation test for DStream.slice."""
+ import datetime as dt
--- End diff --
lets remove the import here since it is at the top already
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