Repository Analysis

x-hw/amazing-qr

💮 amazing QRCode generator in Python (supporting animated gif) - Python amazing 二维码生成器(支持 gif 动态图片二维码)

10.3 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of x-hw/amazing-qr, a Python project with 10,799 GitHub stars. SynthScan v2.0 examined 3,540 lines of code across 22 source files, recording 32 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 10.3 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

10.3
Adjusted Score
10.3
Raw Score
100%
Time Factor
2026-07-11
Last Push
10.8K
Stars
Python
Language
3.5K
Lines of Code
22
Files
32
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 0LOW 32

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 32 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Hyper-Verbose Identifiers20 hits · 24 pts
SeverityFileLineSnippetContext
LOWamzqr/mylibs/matrix.py194def add_format_and_version_string(ver, ecl, mask_num, m):CODE
LOWtests/test_matrix.py33def test_matrix_size_scales_with_version():CODE
LOWtests/test_matrix.py39def test_finder_pattern_top_left():CODE
LOWtests/test_matrix.py51def test_three_finder_patterns():CODE
LOWtests/test_matrix.py71def test_dark_module_is_fixed_dark():CODE
LOWtests/test_run_smoke.py16def test_run_plain_writes_png(tmp_path):CODE
LOWtests/test_run_smoke.py25def test_run_rejects_unsupported_chars(tmp_path):CODE
LOWtests/test_run_smoke.py30def test_run_rejects_bad_version(tmp_path):CODE
LOWtests/test_data.py19def test_numeric_encoding_groups_of_three():CODE
LOWtests/test_data.py24def test_numeric_encoding_single_and_double_digit_groups():CODE
LOWtests/test_data.py42def test_alphanumeric_single_char():CODE
LOWtests/test_data.py50def test_byte_encoding_two_chars():CODE
LOWtests/test_data.py68def test_encode_chooses_alphanumeric_for_mixed():CODE
LOWtests/test_data.py75def test_oversized_content_raises():CODE
LOWtests/test_pipeline.py32def test_pipeline_version_and_size():CODE
LOWtests/test_pipeline.py39def test_pipeline_finder_patterns():CODE
LOWtests/test_pipeline.py49def test_pipeline_timing_patterns():CODE
LOWtests/test_pipeline.py57def test_pipeline_dark_module_is_fixed_dark():CODE
LOWtests/test_pipeline.py64def test_get_qrcode_writes_png(tmp_path):CODE
LOWtests/test_pipeline.py74def test_pipeline_is_deterministic():CODE
Deep Nesting10 hits · 10 pts
SeverityFileLineSnippetContext
LOWamzqr/amzqr.py26CODE
LOWamzqr/amzqr.py75CODE
LOWamzqr/mylibs/matrix.py37CODE
LOWamzqr/mylibs/matrix.py50CODE
LOWamzqr/mylibs/matrix.py83CODE
LOWamzqr/mylibs/matrix.py109CODE
LOWamzqr/mylibs/matrix.py142CODE
LOWamzqr/mylibs/matrix.py110CODE
LOWamzqr/mylibs/matrix.py164CODE
LOWamzqr/mylibs/matrix.py165CODE
Over-Commented Block1 hit · 1 pts
SeverityFileLineSnippetContext
LOWamzqr/amzqr.py1#!/usr/bin/env python3COMMENT
AI Structural Patterns1 hit · 1 pts
SeverityFileLineSnippetContext
LOWamzqr/amzqr.py26CODE