py-eol 1.2.0

Track Python release and end-of-life timelines — know exactly how long your versions are supported.

Table of Contents

• Why py-eol?
• Installation
• Usage
  • As a Python module
  • As a CLI tool
  • As a GitHub Action
  • As a pre-commit hook
• License

Why py-eol?

• Full lifecycle data – release date and EOL date for every Python version, just like endoflife.date
• Programmatically check if a Python version is supported or EOL
• Works as a Python module, CLI tool, GitHub Action, and pre-commit hook
• Detects Python versions in pyproject.toml, setup.py, .python-version, tox.ini, Dockerfile, and GitHub Actions workflow files
• Early warning with --warn-before DAYS before a version reaches EOL
• Useful for local checks, automation scripts, and CI/CD pipelines

Installation

pip install py-eol

Usage

As a Python module

from py_eol import (
    is_eol, get_eol_date, days_until_eol, is_eol_soon,
    supported_versions, eol_versions, latest_supported_version,
    # New lifecycle API
    get_release_date, get_version_info, all_versions,
)

print(is_eol("3.7"))                    # True
print(is_eol("3.12"))                   # False
print(get_eol_date("3.8"))              # 2024-10-07
print(days_until_eol("3.12"))           # e.g. 960 (days remaining)
print(is_eol_soon("3.10", 365))         # True if EOL within 365 days
print(supported_versions())             # ['3.16', '3.15', '3.14', '3.13', '3.12', '3.11', '3.10']
print(eol_versions())                   # ['3.9', '3.8', '3.7', ...]
print(latest_supported_version())       # 3.16

# Full lifecycle info (like endoflife.date)
print(get_release_date("3.12"))         # 2023-10-02
print(all_versions())                   # all known versions, newest first

info = get_version_info("3.12")
# {
#   "version":        "3.12",
#   "release_date":   datetime.date(2023, 10, 2),
#   "eol_date":       datetime.date(2028, 10, 31),
#   "is_eol":         False,
#   "days_until_eol": 940,
# }

As a CLI tool

py-eol --help
usage: py-eol [-h] [--version] {versions,files,list,info,check-self,refresh} ...

Check if a Python version is EOL (End Of Life).

positional arguments:
  {versions,files,list,info,check-self,refresh}
                        sub-command help
    versions            Check specific Python versions
    files               Check files for Python versions
    list                List Python versions and their lifecycle status
    info                Show full lifecycle info for a Python version
    check-self          Check the current Python interpreter version
    refresh             Refresh the EOL data from peps.python.org

options:
  -h, --help            show this help message and exit
  --version             Show the version of the tool

Examples

# Check specific versions
py-eol versions 3.9
py-eol versions 3.7 3.8 3.11

# Warn if a version will be EOL within 180 days
py-eol versions 3.10 --warn-before 180

# Check files for EOL Python versions (shows file:line information)
# Supported: pyproject.toml, setup.py, .python-version, tox.ini, Dockerfile, GitHub Actions workflows
py-eol files pyproject.toml setup.py .python-version tox.ini Dockerfile .github/workflows/ci.yml

# Also warn about versions expiring within 90 days
py-eol files pyproject.toml Dockerfile --warn-before 90

# Show full lifecycle info for a specific version (like endoflife.date)
py-eol info 3.12
py-eol info 3.7
py-eol info 3.12 --json

# List currently supported versions with release and EOL dates
py-eol list

# List ALL versions (supported + EOL) — the full Python lifecycle history
py-eol list --all

# Output result in JSON format (includes release_date, eol_date, days_until_eol)
py-eol list --json
py-eol versions 3.8 3.9 --json

# Check current Python interpreter
py-eol check-self

# Refresh the latest EOL data from peps.python.org
py-eol refresh

Exit codes

Example output

# py-eol info 3.12
Python 3.12
  Release Date:   2023-10-02
  EOL Date:       2028-10-31
  Days Until EOL: 940 days remaining
  Status:         Supported

# py-eol info 3.7
Python 3.7
  Release Date:   2018-06-27
  EOL Date:       2023-06-27
  Days Until EOL: 1013 days ago
  Status:         EOL

# py-eol list --all
All Python versions:
  Version   Release Date   EOL Date     Status
  -------   ------------   ----------   ---------
  3.16      2026-10-01     2032-10-31   Supported
  3.15      2025-10-01     2031-10-31   Supported
  3.14      2025-10-01     2030-10-31   Supported
  3.13      2024-10-07     2029-10-31   Supported
  3.12      2023-10-02     2028-10-31   Supported
  3.11      2022-10-24     2027-10-31   Supported
  3.10      2021-10-04     2026-10-31   Supported
  3.9       2020-10-05     2025-10-31   EOL
  3.8       2019-10-14     2024-10-07   EOL
  3.7       2018-06-27     2023-06-27   EOL
  ...

# py-eol info 3.12 --json
{
  "version": "3.12",
  "release_date": "2023-10-02",
  "eol_date": "2028-10-31",
  "is_eol": false,
  "days_until_eol": 940
}

# Already EOL
⚠️ Python 3.9 is already EOL since 2025-10-31

# EOL soon (with --warn-before 400)
⏰ Python 3.10 will be EOL on 2026-10-31 (229 days remaining)

# Still supported
✅ Python 3.12 is still supported until 2028-10-31

# JSON output (py-eol versions 3.7 3.12 --json)
[
  {
    "version": "3.7",
    "status": "EOL",
    "eol_date": "2023-06-27",
    "days_until_eol": -993
  },
  {
    "version": "3.12",
    "status": "Supported",
    "eol_date": "2028-10-31",
    "days_until_eol": 960
  }
]

As a GitHub Action

Add py-eol to your workflow to automatically check for EOL Python versions on every push or pull request:

- name: Check Python EOL
  uses: shenxianpeng/py-eol@main

With options:

- name: Check Python EOL
  uses: shenxianpeng/py-eol@main
  with:
    # Specific files to check (auto-detects common files if not set)
    files: "pyproject.toml .python-version Dockerfile .github/workflows/ci.yml"
    # Warn if a version will be EOL within 90 days
    warn-before: "90"

Auto-detected files (when files input is not set): pyproject.toml, setup.py, .python-version, tox.ini, Dockerfile, .github/workflows/*.yml

Full workflow example:

name: Check Python EOL

on:
  push:
  schedule:
    - cron: "0 8 * * 1"  # Every Monday

jobs:
  eol-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Check Python EOL
        uses: shenxianpeng/py-eol@main
        with:
          warn-before: "180"

As a pre-commit hook

Add the following to your .pre-commit-config.yaml:

repos:
  - repo: https://github.com/shenxianpeng/py-eol
    rev:  # Use the ref you want to point at
    hooks:
      - id: py-eol

Example output:

Check Python version EOL.................................................Failed
- hook id: py-eol
- exit code: 1

pyproject.toml:9: ⚠️ Python 3.7 is already EOL since 2023-06-27
.github/workflows/ci.yml:16: ⚠️ Python 3.9 is already EOL since 2025-10-31
Dockerfile:1: ⚠️ Python 3.8 is already EOL since 2024-10-07

License

MIT License