how to iterate wordcount in python spark

import sys
 
from pyspark import SparkContext, SparkConf
 
if __name__ == "__main__":
	
	# create Spark context with necessary configuration
	sc = SparkContext("local","PySpark Word Count Exmaple")
	
	# read data from text file and split each line into words
	words = sc.textFile("D:/workspace/spark/input.txt").flatMap(lambda line: line.split(" "))
	
	# count the occurrence of each word
	wordCounts = words.map(lambda word: (word, 1)).reduceByKey(lambda a,b:a +b)
	
	# save the counts to output
	wordCounts.saveAsTextFile("D:/workspace/spark/output/")