[GitHub] [spark] ueshin commented on a change in pull request #28957: [WIP][SPARK-32138] Drop Python 2.7, 3.4 and 3.5

[GitBox <gi...@apache.org>]

ueshin commented on a change in pull request #28957:
URL: https://github.com/apache/spark/pull/28957#discussion_r448615071



##########
File path: python/pyspark/mllib/clustering.py
##########
@@ -17,20 +17,12 @@
 
 import sys
 import array as pyarray
-import warnings
-
-if sys.version > '3':
-    xrange = range
-    basestring = str
-
 from math import exp, log
+from collections import namedtuple
 
 from numpy import array, random, tile
 
-from collections import namedtuple
-
-from pyspark import SparkContext, since
-from pyspark.rdd import RDD, ignore_unicode_prefix
+from pyspark import SparkContext, since, RDD

Review comment:
       nit: Why changed to import `RDD` from `pyspark` instead of `pyspark.rdd`?




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