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+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# $example on$
+from pyspark.ml.feature import Imputer
+# $example off$
+from pyspark.sql import SparkSession
+
+"""
+An example demonstrating Imputer.
+Run with:
+ bin/spark-submit examples/src/main/python/ml/imputer_example.py
+"""
+
+if __name__ == "__main__":
+ spark = SparkSession\
+ .builder\
+ .appName("ImputerExample")\
+ .getOrCreate()
+
+ # $example on$
+ df = spark.createDataFrame([
+ (1.0, float("nan")),
+ (2.0, float("nan")),
+ (float("nan"), 3.0),
+ (4.0, 4.0),
+ (5.0, 5.0)
+ ], ["a", "b"])
+
+ imputer = Imputer(inputCols=["a", "b"], outputCols=["out_a", "out_b"])
+ model = imputer.fit(df)
+
+ model.transform(df).show()
+ # $example off$
+
+ spark.stop()