# Pyston

(No longer maintained) A faster and highly-compatible implementation of the Python programming language.

Repository: https://github.com/pyston/pyston
Canonical: https://ross.abutalabs.com/products/pyston
Homepage: https://www.pyston.org/
Language: Python
License: NOASSERTION
License Family: other
Last push: 2024-08-12T16:30:59+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2011, "days_push": 751, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2493, forks 96 (observed 2026-08-28T04:06:56.561935+00:00)

## What it is
Pyston v1 was a faster, highly compatible implementation of the Python programming language, focused on improving runtime performance. This repository is the archived home of the old v1 code, which has been superseded by Pyston v2 in a separate repository.

## Use cases
- run python code faster without changing source
- speed up cpu-bound python workloads
- drop-in replacement for cpython with better performance
- explore jit techniques for python
- study the old pyston v1 codebase

## When to choose
- you specifically need the historical pyston v1 code for research or archaeology

## When to avoid
- you want the actively maintained Pyston v2 implementation
- you need a supported Python interpreter for production
- you expect updates or new releases from this repository

## Facets
- artifact type: cli-tool
- maturity: abandoned
- function: interpreter, compiler
- domain: programming-languages, performance, developer-tools
- platform: python, cpp
- tags: python-implementation, jit, superseded, pyston-v1, programming-language, performance, linux, macos

## Member repositories
- pyston/pyston (main) score 23
- pyston/pyston_v1 (mirror) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:56.561935+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:31:24.188940+00:00, confidence not recorded.
  - readme: https://github.com/pyston/pyston (fetched 2026-08-28T04:06:56.561935+00:00, sha d2c4f2e1cbef)
- Data as of 2026-08-30T08:39:29.467469+00:00.