Create mapper.py

Author: ballima

mapper.py

@@ -0,0 +1,20 @@
+
+#!/usr/bin/python
+
+import sys
+
+#for skipping data analysis on the first line
+for j, line in enumerate(sys.stdin, -1):
+        if (j>=0):
+                #taking each line into a variable "line"
+                line = line.strip()
+                #taking all the words in the line separated by comma to variable line
+                words = line.split(",")
+                count = 0
+                length = len(words)
+                #considering the last 5 elements of the array
+                for i in reversed(words):
+                        if ( count < 5 and i != ""):
+                                print '%s\t%s' % (i, 1)
+                        count = count + 1
+~