These two files

are very similar. One file is has four extra words in it. Identify those four words.

Inspection revealed that those files have one word per line.



In [1]:

    
def get_words_set(filename):
    return set(word.strip() for word in open(filename))



In [2]:

    
a = get_words_set('113809of.fic')
b = get_words_set('113809of.rev.2.fic')



In [3]:

    
len(a), len(b)









    Out[3]:





(113809, 113805)



In [4]:

    
a - b









    Out[4]:





{'aloha', 'manta', 'python', 'ray'}