packageurl-python

Python library to parse and build "purl" aka. Package URLs. See https://github.com/package-url/purl-spec for details.

Join the discussion at https://gitter.im/package-url/Lobby or enter a ticket for support.

License: MIT

Tests and build status

Tests and build

Install

pip install packageurl-python

Usage

>>> from packageurl import PackageURL

>>> purl = PackageURL.from_string("pkg:maven/org.apache.commons/io@1.3.4")
>>> print(purl.to_dict())
{'type': 'maven', 'namespace': 'org.apache.commons', 'name': 'io', 'version': '1.3.4', 'qualifiers': None, 'subpath': None}

>>> print(purl.to_string())
pkg:maven/org.apache.commons/io@1.3.4

>>> print(str(purl))
pkg:maven/org.apache.commons/io@1.3.4

>>> print(repr(purl))
PackageURL(type='maven', namespace='org.apache.commons', name='io', version='1.3.4', qualifiers={}, subpath=None)

Utilities

Django models

packageurl.contrib.django.models.PackageURLMixin is a Django abstract model mixin to use Package URLs in Django.

SQLAlchemy mixin

packageurl.contrib.sqlalchemy.mixin.PackageURLMixin is a SQLAlchemy declarative mixin to use Package URLs in SQLAlchemy models.

URL to PURL

packageurl.contrib.url2purl.get_purl(url) returns a Package URL inferred from an URL.

>>> from packageurl.contrib import url2purl
>>> url2purl.get_purl("https://github.com/package-url/packageurl-python")
PackageURL(type='github', namespace='package-url', name='packageurl-python', version=None, qualifiers={}, subpath=None)

PURL to URL

• packageurl.contrib.purl2url.get_repo_url(purl) returns a repository URL inferred from a Package URL.
• packageurl.contrib.purl2url.get_download_url(purl) returns a download URL inferred from a Package URL.
• packageurl.contrib.purl2url.get_inferred_urls(purl) return all inferred URLs (repository, download) from a Package URL.

>>> from packageurl.contrib import purl2url

>>> purl2url.get_repo_url("pkg:rubygems/bundler@2.3.23")
"https://rubygems.org/gems/bundler/versions/2.3.23"

>>> purl2url.get_download_url("pkg:rubygems/bundler@2.3.23")
"https://rubygems.org/downloads/bundler-2.3.23.gem"

>>> purl2url.get_inferred_urls("pkg:rubygems/bundler@2.3.23")
["https://rubygems.org/gems/bundler/versions/2.3.23", "https://rubygems.org/downloads/bundler-2.3.23.gem",]

Run tests

Install test dependencies:

python3 thirdparty/virtualenv.pyz --never-download --no-periodic-update .
bin/pip install -e ."[test]"

Run tests:

bin/py.test tests

Make a new release

• start a new release branch

• update the CHANGELOG.rst and AUTHORS.rst

• update README.rst if needed

• bump version in setup.cfg

• run all tests

• install restview and validate that all .rst docs are correct

• commit and push this branch

• tag and push that tag

• make a PR to merge branch

• once merged, run:

  bin/pip install --upgrade pip wheel twine setuptools
  

• delete the "dist" and "build" directories:

  rm -rf dist/ build/
  

• create a source distribution and wheel with:

  bin/python setup.py sdist bdist_wheel
  

• finally, upload to PyPI:

  bin/twine upload dist/*