pyproject-toml
Project intend to implement PEP 517, 518, 621, 631 and so on.
Decision gist · record as of 2026-08-14
Yes, if you need to parse pyproject.toml files programmatically and can tolerate a pre-alpha API. The package has low install friction, no known vulnerabilities, and a permissive license. However, expect no active maintenance—the last release was 640 days ago—so pin the version and avoid relying on future updates. Suitable for stable, internal tooling but not for packages that need ongoing support.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.9 or later (supports up to 3.13); pyproject.toml file must exist and be valid TOML.
- Low friction installation with a pure-Python wheel.
- Maintenance is dormant—last release was 640 days ago with a commit on 2024-11-13, though the repository remains active and unarchived.
License · maintenance · safety
MIT (permissive) — MIT license is permissive; you may use, modify, and distribute this package freely with minimal restrictions, making it safe for both commercial and open-source projects.
last release 2024-11-12 (640 days) · last repo commit 2024-11-13 · 13 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 190,410 downloads/mo, #9,911 on PyPI
Alternatives
Verify before relying
pip install pyproject-toml
from pyproject_toml import PyProject
project = PyProject.from_file('pyproject.toml')- Whether the package fully implements all of PEP 631 or only partial coverage of the listed PEPs.
- API stability and whether breaking changes are expected before a 1.0 release (currently at 0.1.0 pre-alpha).
- Whether error handling and validation messages are production-ready or still experimental.
What it is and what it does
pyproject-toml is a pre-alpha library for parsing and validating Python project configuration from pyproject.toml files. It aims to implement the Python Enhancement Proposals that define modern project metadata standards (PEP 517, 518, 621, 631, and others). The package wraps standard dependencies—setuptools, wheel, pydantic, packaging, and tomli—to handle TOML parsing and metadata validation.
The library is dormant but stable; its last commit was recent (2024-11-13) but no active development is occurring. It supports Python 3.9 through 3.13 and carries a permissive MIT license. Use it when you need programmatic access to pyproject.toml metadata in a Python application, though be aware the API is pre-alpha and may change before reaching version 1.0.
Use it for
- Build tools and package managers that need to read and validate pyproject.toml configuration files.
- Development utilities that inspect project metadata to determine dependencies, build requirements, or version information.
- CI/CD pipelines that programmatically extract and validate project configuration without shell parsing.
- IDE plugins or linters that need to understand a project's pyproject.toml structure and constraints.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need to parse pyproject.toml files programmatically and can tolerate a pre-alpha API.
The package has low install friction, no known vulnerabilities, and a permissive license. However, expect no active maintenance—the last release was 640 days ago—so pin the version and avoid relying on future updates. Suitable for stable, internal tooling but not for packages that need ongoing support.
Install
pyproject-toml on PyPI
Before you install
Low friction installation with a pure-Python wheel. Maintenance is dormant—last release was 640 days ago with a commit on 2024-11-13, though the repository remains active and unarchived. Suitable for stable use cases but expect no active development.
Requires Python 3.9 or later (supports up to 3.13); pyproject.toml file must exist and be valid TOML.
License in practice
MIT license is permissive; you may use, modify, and distribute this package freely with minimal restrictions, making it safe for both commercial and open-source projects.
Quickstart
pip install pyproject-toml
from pyproject_toml import PyProject
project = PyProject.from_file('pyproject.toml')Verify before relying
- Whether the package fully implements all of PEP 631 or only partial coverage of the listed PEPs.
- API stability and whether breaking changes are expected before a 1.0 release (currently at 0.1.0 pre-alpha).
- Whether error handling and validation messages are production-ready or still experimental.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <3.14,>=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 5 packagessetuptoolswheelpydanticpackagingtomli |
| Maintenance | Dormant 640 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 190,410 / month, #9,911 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 2 - Pre-AlphaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT License |
Evidence: pyproject_toml-0.1.0-py3-none-any.whl
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See also pyproject-metadata · pyproject-parser · validate-pyproject · pyproject-api · pyproject-dependencies · pdm-pep517 · pdm-backend · hl7apy · single-source · pdm