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pythontext-filescounter
Kvach
Kvach

Reputation: 109

Python: Count uniq line(s) between 2 files

 First File | Second File

    bob        | greg
    bob        | larry
    mark       | mark
    larry      | bruce
    tom        | tom

With the code bellow I get output: bob, but I need to get bob x 2

with open('some_file_1.txt', 'r') as file1:
     with open('some_file_2.txt', 'r') as file2:
         diff = set(file1).difference(file2)

 with open('some_output_file.txt', 'w') as file_out:
     for line in same:
        file_out.write(line)

Upvotes: 0

Views: 50

Answers (1)

Adam Smith
Adam Smith

Reputation: 54213

Sounds like you want the difference of two collections.Counter objects.

import collections

with open("file1.txt") as f1, open("file2.txt") as f2:
    c1, c2 = collections.Counter(f1), collections.Counter(f2)
    result = c1 - c2
    # Counter({"bob": 2})

with open("output.txt", "w") as outf:
    for line, count in result.items():
        outf.write("{} x {}".format(line, count))

Upvotes: 2

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