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）

16.2 Moderate AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of x-hw/amazing-qr, a Python project with 10,812 GitHub stars. SynthScan v2.0 examined 4,388 lines of code across 31 source files, recording 58 pattern matches distributed across 7 syntactic categories. The overall adjusted score of 16.2 places this repository in the Moderate 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).

16.2

Adjusted Score

16.2

Raw Score

100%

Time Factor

2026-08-25

Last Push

10.8K

Stars

Python

Language

4.4K

Lines of Code

Files

Pattern Hits

2026-08-29

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 1LOW 57

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 58 distinct pattern matches across 7 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 Identifiers41 hits · 52 pts

Severity	File	Line	Snippet	Context
LOW	amzqr/mylibs/matrix.py	194	def add_format_and_version_string(ver, ecl, mask_num, m):	CODE
LOW	tests/test_gif.py	45	def test_gif_per_frame_duration_preserved(tmp_path):	CODE
LOW⚡	tests/test_combine_mask.py	24	def test_mask_allows_clear_data_pixel():	CODE
LOW⚡	tests/test_combine_mask.py	31	def test_mask_reserves_finder_corners():	CODE
LOW⚡	tests/test_combine_mask.py	39	def test_mask_reserves_timing():	CODE
LOW⚡	tests/test_combine_mask.py	47	def test_mask_reserves_only_module_centers():	CODE
LOW⚡	tests/test_combine_mask.py	57	def test_mask_reserves_alignment_blocks():	CODE
LOW	tests/test_combine_mask.py	118	def test_mask_parity_with_original_loop(ver):	CODE
LOW	tests/test_constant_layout.py	11	def test_layout_constants_values():	CODE
LOW	tests/test_constant_layout.py	21	def test_layout_constants_derive_from_roots():	CODE
LOW	tests/test_matrix.py	33	def test_matrix_size_scales_with_version():	CODE
LOW	tests/test_matrix.py	39	def test_finder_pattern_top_left():	CODE
LOW	tests/test_matrix.py	51	def test_three_finder_patterns():	CODE
LOW	tests/test_matrix.py	71	def test_dark_module_is_fixed_dark():	CODE
LOW	tests/test_combine_layout.py	73	def test_combine_respects_reserved_modules(tmp_path):	CODE
LOW	tests/test_combine_layout.py	122	def test_combine_scaling_preserves_aspect_ratio(tmp_path):	CODE
LOW	tests/test_combine_layout.py	202	def test_combine_fully_transparent_bg_keeps_qr(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	16	def test_run_plain_writes_png(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	25	def test_run_rejects_unsupported_chars(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	30	def test_run_rejects_bad_version(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	52	def test_run_accepts_jpeg_extension(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	59	def test_run_accepts_uppercase_extension(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	67	def test_run_rejects_unsupported_picture_extension(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	75	def test_run_rejects_unsupported_save_name_extension(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	82	def test_run_accepts_jpeg_save_name(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	88	def test_run_accepts_uppercase_save_name(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	95	def test_run_gif_picture_requires_gif_save_name(tmp_path):	CODE
LOW⚡	tests/test_run_smoke.py	102	def test_run_gif_picture_accepts_uppercase_gif_save_name(tmp_path):	CODE
LOW	tests/test_data.py	16	def test_numeric_encoding_groups_of_three():	CODE
LOW	tests/test_data.py	21	def test_numeric_encoding_single_and_double_digit_groups():	CODE
LOW	tests/test_data.py	39	def test_alphanumeric_single_char():	CODE
LOW	tests/test_data.py	45	def test_byte_encoding_two_chars():	CODE
LOW	tests/test_data.py	63	def test_encode_chooses_alphanumeric_for_mixed():	CODE
LOW	tests/test_data.py	70	def test_oversized_content_raises():	CODE
LOW⚡	tests/test_pipeline.py	26	def test_pipeline_version_and_size():	CODE
LOW⚡	tests/test_pipeline.py	33	def test_pipeline_finder_patterns():	CODE
LOW⚡	tests/test_pipeline.py	43	def test_pipeline_timing_patterns():	CODE
LOW⚡	tests/test_pipeline.py	51	def test_pipeline_dark_module_is_fixed_dark():	CODE
LOW⚡	tests/test_pipeline.py	58	def test_get_qrcode_writes_png(tmp_path):	CODE
LOW⚡	tests/test_pipeline.py	68	def test_pipeline_is_deterministic():	CODE
LOW	benchmarks/test_bench_combine_static.py	28	def test_bench_combine_static(benchmark, tmp_path, bg_size, colorized, version, ecl, words_key):	CODE

Deep Nesting12 hits · 12 pts

Severity	File	Line	Context
LOW	amzqr/amzqr.py	12	CODE
LOW	amzqr/amzqr.py	80	CODE
LOW	amzqr/mylibs/matrix.py	37	CODE
LOW	amzqr/mylibs/matrix.py	50	CODE
LOW	amzqr/mylibs/matrix.py	83	CODE
LOW	amzqr/mylibs/matrix.py	109	CODE
LOW	amzqr/mylibs/matrix.py	142	CODE
LOW	amzqr/mylibs/matrix.py	110	CODE
LOW	amzqr/mylibs/matrix.py	164	CODE
LOW	amzqr/mylibs/matrix.py	165	CODE
LOW	tests/test_combine_mask.py	75	CODE
LOW	tests/test_combine_layout.py	38	CODE

Self-Referential Comments1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	tests/test_combine_layout.py	134	# Create a portrait bg (width < height) with distinct top/bottom colors.	COMMENT

Over-Commented Block1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	amzqr/amzqr.py	61	draw.point(pts, fill=0)	COMMENT

AI Structural Patterns1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	amzqr/amzqr.py	80		CODE

Modern Structural Boilerplate1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	amzqr/__init__.py	3	__all__ = ["__version__"]	CODE

Unused Imports1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	amzqr/__init__.py	1		CODE