Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1515#discussion_r15196704
--- Diff: examples/src/main/python/als.py ---
@@ -49,6 +51,9 @@ def update(i, vec, mat, ratings):
if __name__ == "__main__":
+
+ print """WARNING: THIS IS A NAIVE IMPLEMENTATION OF ALS AND IS GIVEN
AS AN EXAMPLE!
--- End diff --
print >> sys.stderr, """WARNING` (output to stderr) This block should be
under the `Usage` block because `print` is part of the execution, which should
come after doc.
Only capitalizing `WARNING` or shorter `WARN` should be sufficient. It is
hard to read with all uppercase letters.
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