import urllib.parse class PackageIndex: """Represents a Package Index and provides easier access to endpoints """ __slots__ = ['url', 'netloc', 'simple_url', 'pypi_url', 'file_storage_domain'] def __init__(self, url: str, file_storage_domain: str) -> None: super().__init__() self.url = url self.netloc = urllib.parse.urlsplit(url).netloc self.simple_url = self._url_for_path('simple') self.pypi_url = self._url_for_path('pypi') # This is part of a temporary hack used to block installs of PyPI # packages which depend on external urls only necessary until PyPI can # block such packages themselves self.file_storage_domain = file_storage_domain def _url_for_path(self, path: str) -> str: return urllib.parse.urljoin(self.url, path) PyPI = PackageIndex( 'https://pypi.org/', file_storage_domain='files.pythonhosted.org' ) TestPyPI = PackageIndex( 'https://test.pypi.org/', file_storage_domain='test-files.pythonhosted.org' )