Github user sethah commented on a diff in the pull request: https://github.com/apache/spark/pull/9581#discussion_r48774100 --- Diff: python/pyspark/ml/param/__init__.py --- @@ -247,7 +248,27 @@ def _set(self, **kwargs): Sets user-supplied params. """ for param, value in kwargs.items(): - self._paramMap[getattr(self, param)] = value + p = getattr(self, param) + if (p.expectedType is not None): + if p.expectedType is None or type(value) == p.expectedType or value is None: --- End diff -- I believe the `p.expectedType is None` check in the second if statement is frivolous. Couldn't this be condensed into a single if else like: ```python if p.expectedType is not None and type(value) != p.expectedType and value is not None: try: ... else: self._paramMap[getattr(self, param)] = value ```
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