huaxingao commented on issue #26439: [SPARK-29801][ML] ML models unify toString method URL: https://github.com/apache/spark/pull/26439#issuecomment-552035418 I recall the problem we had earlier on Python side when setting params for ML models, for example: ``` >>> gm = GaussianMixture(k=3, tol=0.0001, seed=10) >>> model = gm.fit(df) >>> model.setPredictionCol("newPrediction") GaussianMixture... ``` I had to put ```GaussianMixture...``` in the last line because ```GaussianMixtureModel...``` would fail. Now since the ```toString``` is available in ML models on scala side, I will open a jira to fix the python side problem by adding a ```__repr__(self)``` method in the ML models ``` def __repr__(self): return self._call_java("toString") ``` so I can have ``` >>> gm = GaussianMixture(k=3, tol=0.0001, seed=10) >>> model = gm.fit(df) >>> model.setPredictionCol("newPrediction") GaussianMixtureModel... ```
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