Github user holdenk commented on a diff in the pull request:
https://github.com/apache/spark/pull/16405#discussion_r94264468
--- Diff:
examples/src/main/python/mllib/decision_tree_regression_example.py ---
@@ -44,7 +44,7 @@
# Evaluate model on test instances and compute test error
predictions = model.predict(testData.map(lambda x: x.features))
labelsAndPredictions = testData.map(lambda lp:
lp.label).zip(predictions)
- testMSE = labelsAndPredictions.map(lambda (v, p): (v - p) * (v -
p)).sum() /\
+ testMSE = labelsAndPredictions.map(lambda lp: (lp[0] - lp[1]) * (lp[0]
- lp[1])).sum() /\
--- End diff --
Ah ok, makes sense - I was looking at changes directly from pep8 but if we
need it to be compiled with python3 to test py3 pep8 that makes sense (of
course a follow up issue for proper py3 support is the best place to address
the issues not blocking pep8 testing).
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