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I am searching a tool to find code duplication in Python code and HTML templates.

For Python I tried pylint, but it is very limited. See issue1915.

But maybe this is not a task which needs to be done again and again for every programming language. Maybe there is a tool which can do this for any kind of text....

Needed features:

  • find duplicate text in files.
  • Whitespace changes should get ignored
  • open source
  • optional: Find duplicates even if some parts where slightly changed (for example a variable was renamed)
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    Did you find a solution to your problem?
    – Martin Thoma
    Sep 8, 2020 at 10:34
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    @MartinThoma I did not find a solution. I did not actively looked for an answer during the last months since I switched the job.
    – guettli
    Sep 10, 2020 at 9:14

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You might want to give PDM a try. It has a tool called "cpd" (copy paste dectection). You run it like this:

cpd --language python --minimum-tokens 100 --files your_code

Pylint

I also found pylint too limited. This is how I used the similarities checker:

pylint --disable=all --enable=similarities your_code
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