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Show HN: Pyscn – Python code quality analyzer for vibe coders

(github.com)
136 points d-yoda | 1 comments | 05 Oct 25 13:22 UTC | HN request time: 0.21s | source

Hi HN! I built pyscn for Python developers in the vibe coding era. If you're using Cursor, Claude, or ChatGPT to ship Python code fast, you know the feeling: features work, tests pass, but the codebase feels... messy.

Common vibe coding artifacts:

• Code duplication (from copy-pasted snippets)

• Dead code from quick iterations

• Over-engineered solutions for simple problems

• Inconsistent patterns across modules

pyscn performs structural analysis:

• APTED tree edit distance + LSH

• Control-Flow Graph (CFG) analysis

• Coupling Between Objects (CBO)

• Cyclomatic Complexity

Try it without installation:

  uvx pyscn analyze .          # Using uv (fastest)
  pipx run pyscn analyze .     # Using pipx
  (Or install: pip install pyscn)
Built with Go + tree-sitter. Happy to dive into the implementation details!
Show context
amacbride ◴[05 Oct 25 18:09 UTC] No.45483781[source]▶
I'm going to push back hard on the folks dunking on "vibe coders" -- I have been programming longer than most of you have been alive, and there are times when I absolutely do vibe coding:

1) unfamiliar framework 2) just need to build a throwaway utility to help with a main task (and I don't want to split my attention) 3) for fun: I think of it as "code sculpting" rather than writing

So this is absolutely a utility I would use. (Kudos to the OP.)

Remember the second-best advice for internet interactions (after Wheaton's Law): "Ssssshh. Let people enjoy things."

replies(2): >>45483868 #>>45484687 #
convolvatron ◴[05 Oct 25 18:20 UTC] No.45483868[source]▶
we can have a pissing contest. I don't begrudge anyone their fun, but when my job becomes taking hundreds of thousands of lines of vibe code and just finding that one little change that will make it all work, we have a serious problem with expectations.
replies(1): >>45483912 #
1. amacbride ◴[05 Oct 25 18:26 UTC] No.45483912[source]▶
I don't think we're at odds: I think "vibe coding" is strictly for fun and for prototypes. However, people will misuse any tool, so having utilities to mitigate the risk isn't a bad thing.