zerodep 2026.4.11

Zero-dependency, single-file Python implementations of popular libraries

zerodep

Zero-dependency, single-file Python implementations of popular libraries — stdlib only, Python 3.10+.

零依赖、单文件的 Python 常用库实现 —— 仅使用标准库，支持 Python 3.10+。

English Docs | 中文文档

Quick Start

pip install zerodep          # install the CLI
zerodep add yaml retry       # copy modules into your project

from yaml import load, dump

data = load("name: Alice\nage: 30")
print(data)  # {'name': 'Alice', 'age': 30}

Each module is a self-contained single .py file — copy it into your project and import. No pip install needed at runtime.

Modules

Agent Protocols

Module	Description	Benchmark Against
jsonrpc/	JSON-RPC 2.0 protocol: data types, dispatcher, async transport	jsonrpcserver
a2a/	Google A2A protocol: JSON-RPC 2.0, SSE streaming, task management	a2a-python
acp/	Anthropic ACP protocol: JSON-RPC 2.0 over stdio, async client/agent	acp-python
skills/	Agent Skills runtime: parse, discover, manage, select skills	—

Web & Networking

Module	Description	Benchmark Against
httpclient/	Sync + async REST client with connection pooling, proxy, and auth	httpx
sse/	Server-Sent Events client with auto-reconnect	httpx-sse

Data Formats

Module	Description	Benchmark Against
xml/	XML ↔ dict converter with fault-tolerant parsing and LLM tag extraction	xmltodict
yaml/	YAML parser and serializer (common subset)	PyYAML
jsonc/	JSONC parser (JSON with comments and trailing commas)	commentjson
toon/	TOON (Token-Oriented Object Notation) encoder/decoder	toon_format
frontmatter/	Frontmatter parser and serializer (YAML/TOML/JSON)	python-frontmatter

Data Validation

Module	Description	Benchmark Against
validate/	Runtime TypedDict/dataclass validator with JSON Schema generation	pydantic
semver/	PEP 440 version parser and comparator	packaging

Text & Markup

Module	Description	Benchmark Against
markdown/	Markdown → HTML renderer (CommonMark subset + GFM tables)	mistune
soup/	HTML parser with BeautifulSoup-like API (find, select, CSS selectors)	beautifulsoup4
diff/	Unified diff parser, patch apply/reverse, three-way merge	unidiff

Search & Retrieval

Module	Description	Benchmark Against
search/	BM25/BM25+/BM25L/BM25F + TF-IDF full-text search with Bayesian calibration	rank-bm25

Configuration

Module	Description	Benchmark Against
dotenv/	.env file parser (load_dotenv, dotenv_values)	python-dotenv
config/	Unified config loader (env vars, .env, JSON/YAML/TOML/INI)	python-decouple

CLI & Terminal

Module	Description	Benchmark Against
ansi/	ANSI terminal styling: colors, attributes, detection, strip/visible_len	—
tabulate/	Table formatting with multiple output styles	tabulate
prompt/	Interactive CLI prompts (confirm, select, text)	questionary

Security

Module	Description	Benchmark Against
aes/	AES encryption: ECB, CBC, CTR, GCM modes (pure Python + OpenSSL via ctypes)	pycryptodome

Infrastructure & Tools

Module	Description	Benchmark Against
cache/	In-memory cache with TTL, LRU/LFU eviction, sync + async decorators	—
retry/	Retry decorator with configurable backoff strategies	tenacity
scheduler/	In-process task scheduler with cron, interval, one-shot triggers	APScheduler
structlog/	Structured logging with pretty console output	structlog
runner/	Structured subprocess execution with timeout escalation	—
vcs/	Git/Hg/Jujutsu CLI wrapper (diff, status, log, blame)	—
filelock/	Cross-platform advisory file lock (fcntl/msvcrt)	—
qr/	QR Code generation with terminal rendering	qrcode

Documentation

• English: zerodep.readthedocs.io/en/
• 中文: zerodep.readthedocs.io/zh-cn/

License

MIT