THREE FILES
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dif.py
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name1 = input('Enter the name of file1 : ')
name2 = input('Enter the name of file2 : ')
f1 = open(name1,'r')
f2 = open(name2,'r')
d1 = f1.readlines()
d2 = f2.readlines()
if d1==d2:
    print('Yes')
    exit
for i in range(0,min(len(d1),len(d2))):
    if d1[i]!=d2[i]:
        print('NO')
        print(d1[i])
        print(d2[i])
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words.txt
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line 1
line 2
line 3 words
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writers.txt
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line 1
line 2
line 3 writers