unstd
stdlib-faithful replacements, with optional native acceleration where it preserves the contract. Modules follow the stdlib call surface, so migrating a call site is an import swap. JSON proves native eligibility and falls back to stdlib codecs to preserve formatting, values, callbacks and errors.
import json # →
from unstd.serde import jsonx # faithful json API; dumpb for compact transport
The base install is pure stdlib: depending on unstd adds zero third-party
closure. Every accelerated backend rides an optional extra with a guarded
import that falls back to the stdlib (or raises a clear ImportError where
no fallback is faithful). Install unstd and you pay nothing. Install
unstd[serde] and the serde modules light up.
Install
python3 -m pip install unstd
python3 -m pip install 'unstd[serde,ids,crypto]'
CPython platform wheels include an optional C guard for fast, compatible JSON encoding. Source builds use it when a compiler is available and otherwise keep the portable fallback. The runtime dependency set and public APIs are unchanged. See the Billy fixture measurements for release comparisons, including remaining overhead relative to 2.1.1.
Groups
| Group | Extra | Backend / fallback |
|---|---|---|
serde |
unstd[serde] |
orjson / msgspec / pybase64 → stdlib json/base64 |
ids |
unstd[ids] |
uuid-utils → uid falls back to stdlib UUIDv7 |
crypto |
unstd[crypto] |
blake3 (required; hashlib ships BLAKE2, a different algorithm) |
time |
unstd[time] |
timeutil is pure stdlib; zoned requires whenever, and timeutil's protobuf Timestamp bridge requires unstd[proto] |
model |
unstd[model] |
pydantic (required) |
rex |
unstd[rex] |
irregex → stdlib re |
containers |
unstd[containers] |
sortedcontainers + immutables (required) |
rand |
unstd[rand] |
numpy PCG64 → stdlib random; crypto is always secrets |
pack |
unstd[pack] |
numpy → stdlib struct |
clone |
— | stdlib; exact-type walk, copy.deepcopy per foreign node |
text |
unstd[text] |
rapidfuzz → stdlib difflib |
audio |
unstd[audio] |
soundfile + numpy → stdlib wave |
toml |
unstd[toml] |
read is tomllib; write requires tomlkit |
yaml |
unstd[yaml] |
ruamel.yaml: safe YAML 1.2 and comment-preserving edits (required) |
compress |
unstd[compress] |
zlib-ng → stdlib gzip, with faithful file framing and errors |
proc |
— | stdlib subprocess |
fs |
— | stdlib os |
iters |
— | stdlib itertools |
clone, proc, fs, and iters ship in the base install.
Testing
The test suite follows Billy's owner-first Python layout:
product contracts, cross-cutting assurance, shared support, and standalone tools.
The P0 boundary suites exercise installed packaging, real TLS peers,
filesystem/process failures, and parser/token security. The
coverage plan maps parity, properties, fuzzing,
penetration, fault injection, packaging, concurrency, resource, and performance
obligations. Inspect implemented and planned lanes with
uv run --no-sync python -m tests.tooling list; run the active suite with
uv run --no-sync pytest -q.
The fuzz runner supplies eleven parser/token
targets, authenticated corpora, deterministic mutation, and bounded Atheris
campaigns. Run uv run --no-sync python -m tests.tooling.fuzz check to validate
the inventory, or uv run --no-sync python -m tests.tooling.fuzz replay to
replay every installed target. CI retains findings and coverage corpora.
The chaos runner exercises recorded filesystem,
process, stream and clock/entropy failures and recovery. Run
uv run --no-sync python -m tests.tooling.chaos run --seed 173 for a bounded
installed-backend campaign with per-case journals and reproducible schedules.
The concurrency runner checks atomic file
histories, UUID contention and fork safety, and shared cache/parser isolation.
Run uv run --no-sync python -m tests.tooling.concurrency run --seed 173 for
bounded installed-backend workers with retained histories and replay.
Prior art
- orjson (Kloss) / msgspec (Fitzgerald) / pybase64 (aklomp libbase64) — the serde backends.
- The guarded-optional-backend pattern is the one uvloop popularized: import the accelerator, fall back when it is absent.
License
Apache-2.0
1 maintainer
Metadata
1 maintainer
Release files for unstd 3.1.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| unstd-3.1.0.tar.gz | 889.1 kB | With provenance | Details |
Built distributions (wheels)
Total release size: 5.9 MB
Release files / unstd-3.1.0.tar.gz
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|---|---|
| Size | 889.1 kB |
| Tags | Source |
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| Tags | CPython 3.14 Windows ARM64 |
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