Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/12790#discussion_r62393201
--- Diff: python/pyspark/ml/pipeline.py ---
@@ -89,9 +87,9 @@ def setParams(self, stages=None):
setParams(self, stages=None)
Sets params for Pipeline.
"""
- if stages is None:
- stages = []
kwargs = self.setParams._input_kwargs
+ if stages is None:
+ kwargs['stages'] = []
--- End diff --
Well if you actually call `setParams` with `stages=None` like the function
shows as the default, it seems like it should work, but fails when `_fit` is
called. Maybe people would know not to do this and it's not really a problem?
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