Github user yanboliang commented on a diff in the pull request: https://github.com/apache/spark/pull/12914#discussion_r62285526 --- Diff: python/pyspark/ml/param/__init__.py --- @@ -280,7 +281,9 @@ def explainParam(self, param): else: values.append("undefined") valueStr = "(" + ", ".join(values) + ")" - return "%s: %s %s" % (param.name, param.doc, valueStr) + # Remove the default value from the doc string + docStr = re.sub(r'\(Default [\w\-\s]+?\)\Z', '', param.doc) + return "%s: %s %s" % (param.name, docStr, valueStr) --- End diff -- Further more, I don't think using regex is an elegant way to remove the default value in users specified docs. Users can use various words to express ```default``` that we can not filter them completely.
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