`python-discovery`

What is python-discovery?

python-discovery is a library for discovering Python interpreters installed on your machine. You may have multiple Python versions from system packages, pyenv, mise, asdf, uv, or the Windows registry (PEP 514). This library finds the right one for you.

Give it a requirement like python3.12 or >=3.11,<3.13, and it searches all known locations, verifies each candidate, and returns detailed metadata about the match. Results are cached to disk so repeated lookups are fast.

The library runs on Python 3.8+ and discovers interpreters as old as Python 3.6; anything older is skipped with a warning naming the version it found.

Usage

from pathlib import Path

from python_discovery import DiskCache, get_interpreter

cache = DiskCache(root=Path("~/.cache/python-discovery").expanduser())
result = get_interpreter("python3.12", cache=cache)
if result is not None:
    print(result.executable)  # /usr/bin/python3.12
    print(result.implementation)  # CPython
    print(result.version_info[:3])  # (3, 12, 1)

The get_interpreter() function accepts various specification formats:

Absolute path: /usr/bin/python3.12
Version: 3.12
Implementation prefix: cpython3.12
Version specifier: >=3.10, >=3.11,<3.13

Documentation

Full documentation is available at python-discovery.readthedocs.io

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Source Distribution

python_discovery-1.5.3.tar.gz (82.5 kB view details)

Uploaded Aug 24, 2026 Source

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Uploaded Aug 24, 2026 Python 3

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Uploaded via: twine/7.0.0 CPython/3.13.14

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Publisher: release.yaml on tox-dev/python-discovery

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Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: python_discovery-1.5.3.tar.gz
- Subject digest: e500eb24025fb7c4876c1fdcfbafd9028a10c71b661aee38cb6fb0de594518c1
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- Sigstore integration time: Aug 24, 2026
Source repository:
- Permalink: tox-dev/python-discovery@a4518870621580adee51f1c9d72e695563e6a035
- Branch / Tag: refs/tags/1.5.3
- Owner: https://github.com/tox-dev
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- Trigger Event: push