Python comparison to file differences

Cat Standart

1

2

3

5

Cat Node1.txt

1

2

5

6

Cat Node2.txt

1

2

3

4

5

6

Cat Node3.txt

1

7

8

9

The desired output results are:

Node1:3

Node2:

Node3:2 3 5

#!/usr/bin/python# -*- coding:utf-8 -*-def diff (x, y):         list_x = []        list_y = []         file = open (x, ' R ')          for line in file.readlines ():                 line = line.strip (' \ n ')                  list_x.append (line)          file = open (Y, ' R ')         for  Line in file.readlines ():                 line = line.strip (' \ n ')               &nBsp;  list_y.append (line)         list_x = set (list _x)         list_y = set (list_y)          diff_list = list (List_x.difference (list_y))          diff_str =  ', '. Join (diff_list)          print  '%s:%s '  %  (y,diff_str) file0 =  ' standart ' file1 =  ' node1.txt ' file2  =  ' node2.txt ' file3 =  ' Node3.txt ' diff (file0,file1) diff (file0,file2) diff (File0,file3)

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Python comparison to file differences