Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/11099#discussion_r52225995
--- Diff: python/pyspark/ml/param/__init__.py ---
@@ -49,11 +53,21 @@ def _copy_new_parent(self, parent):
else:
raise ValueError("Cannot copy from non-dummy parent %s." %
parent)
+ def _validate(self, value):
+ if not self.isValid(value):
+ raise ValueError("{parent} parameter {name} given invalid
value {value}"
+ .format(parent=self.parent, name=self.name,
value=str(value)))
+
+ def _convertAndValidate(self, value):
--- End diff --
I added a docstring to the base classes. I am not sure if the derived
classes need docstrings as well?
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