purl

{
  "$schema": "https://packageurl.org/schemas/purl-type-definition.schema-1.0.json",
  "$id": "https://packageurl.org/types/pypi-definition.json",
  "type": "pypi",
  "type_name": "PyPI",
  "description": "Python packages",
  "repository": {
    "use_repository": true,
    "default_repository_url": "https://pypi.org",
    "note": "Previously https://pypi.python.org"
  },
  "namespace_definition": {
    "requirement": "prohibited",
    "note": "there is no namespace"
  },
  "name_definition": {
    "requirement": "required",
    "native_name": "name",
    "case_sensitive": false,
    "normalization_rules": [
      "Replace underscore _ with dash -",
      "Replace dot . with underscore _ when used in distribution (sdist, wheel) names"
    ],
    "note": "PyPI treats - and _ as the same character and is not case sensitive. Therefore a PyPI package name must be lowercased and underscore _ replaced with a dash -. Note that PyPI itself is preserving the case of package names. When used in distribution and wheel names, the dot . is replaced with an underscore _"
  },
  "version_definition": {
    "requirement": "optional",
    "case_sensitive": false,
    "native_name": "version"
  },
  "qualifiers_definition": [
    {
      "key": "file_name",
      "requirement": "optional",
      "description": "The file_name qualifier selects a particular distribution file (case-sensitive). For naming convention, see the Python Packaging User Guide on source distributions https://packaging.python.org/en/latest/specifications/source-distribution-format/#source-distribution-file-name and on binary distributions https://packaging.python.org/en/latest/specifications/binary-distribution-format/#file-name-convention and the rules for platform compatibility tags https://packaging.python.org/en/latest/specifications/platform-compatibility-tags/"
    }
  ],
  "examples": [
    "pkg:pypi/django@1.11.1",
    "pkg:pypi/django@1.11.1?file_name=Django-1.11.1.tar.gz",
    "pkg:pypi/django@1.11.1?file_name=Django-1.11.1-py2.py3-none-any.whl",
    "pkg:pypi/django-allauth@12.23"
  ]
}