DupeFinder

Code duplication detector for Python projects. Finds exact and near-duplicate functions using AST extraction and SequenceMatcher similarity analysis. Configurable similarity threshold (default 85%). Calculates duplication percentage and lines affected. Sliding window detection for non-function duplicates. Scores deduplication health A+ to F. Dark-themed HTML reports showing matched pairs with similarity percentages. JSON and text output. CI/CD ready — exit code 1 if exact duplicates found. Zero dependencies — single Python file.