[SPARK-13814] [PYSPARK] Delete unnecessary imports in python examples…

… files JIRA: https://issues.apache.org/jira/browse/SPARK-13814 ## What changes were proposed in this pull request? delete unnecessary imports in python examples files ## How was this patch tested? manual tests Author: Zheng RuiFeng <ruifengz@foxmail.com> Closes apache#11651 from zhengruifeng/del_import_pe.
roygao94 · Mar 22, 2016 · 63b1928 · 63b1928
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diff --git a/examples/src/main/python/ml/als_example.py b/examples/src/main/python/ml/als_example.py
@@ -21,8 +21,6 @@
 from pyspark.sql import SQLContext
 
 # $example on$
-import math
-
 from pyspark.ml.evaluation import RegressionEvaluator
 from pyspark.ml.recommendation import ALS
 from pyspark.sql import Row

diff --git a/examples/src/main/python/ml/decision_tree_classification_example.py b/examples/src/main/python/ml/decision_tree_classification_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 # $example on$
 from pyspark import SparkContext, SQLContext
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/ml/decision_tree_regression_example.py b/examples/src/main/python/ml/decision_tree_regression_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/ml/gradient_boosted_tree_classifier_example.py b/examples/src/main/python/ml/gradient_boosted_tree_classifier_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/ml/gradient_boosted_tree_regressor_example.py b/examples/src/main/python/ml/gradient_boosted_tree_regressor_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/ml/kmeans_example.py b/examples/src/main/python/ml/kmeans_example.py
@@ -18,7 +18,6 @@
 from __future__ import print_function
 
 import sys
-import re
 
 import numpy as np
 from pyspark import SparkContext

diff --git a/examples/src/main/python/ml/random_forest_classifier_example.py b/examples/src/main/python/ml/random_forest_classifier_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/ml/random_forest_regressor_example.py b/examples/src/main/python/ml/random_forest_regressor_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.ml import Pipeline

diff --git a/examples/src/main/python/mllib/binary_classification_metrics_example.py b/examples/src/main/python/mllib/binary_classification_metrics_example.py
@@ -18,7 +18,6 @@
 Binary Classification Metrics Example.
 """
 from __future__ import print_function
-import sys
 from pyspark import SparkContext, SQLContext
 # $example on$
 from pyspark.mllib.classification import LogisticRegressionWithLBFGS

diff --git a/examples/src/main/python/mllib/gradient_boosting_classification_example.py b/examples/src/main/python/mllib/gradient_boosting_classification_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext
 # $example on$
 from pyspark.mllib.tree import GradientBoostedTrees, GradientBoostedTreesModel

diff --git a/examples/src/main/python/mllib/gradient_boosting_regression_example.py b/examples/src/main/python/mllib/gradient_boosting_regression_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext
 # $example on$
 from pyspark.mllib.tree import GradientBoostedTrees, GradientBoostedTreesModel

diff --git a/examples/src/main/python/mllib/random_forest_classification_example.py b/examples/src/main/python/mllib/random_forest_classification_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext
 # $example on$
 from pyspark.mllib.tree import RandomForest, RandomForestModel

diff --git a/examples/src/main/python/mllib/random_forest_regression_example.py b/examples/src/main/python/mllib/random_forest_regression_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext
 # $example on$
 from pyspark.mllib.tree import RandomForest, RandomForestModel

diff --git a/examples/src/main/python/mllib/recommendation_example.py b/examples/src/main/python/mllib/recommendation_example.py
@@ -20,8 +20,6 @@
 """
 from __future__ import print_function
 
-import sys
-
 from pyspark import SparkContext
 
 # $example on$

diff --git a/examples/src/main/python/streaming/sql_network_wordcount.py b/examples/src/main/python/streaming/sql_network_wordcount.py
@@ -29,7 +29,6 @@
 """
 from __future__ import print_function
 
-import os
 import sys
 
 from pyspark import SparkContext