from pip._internal.distributions.base import AbstractDistribution from pip._internal.index.package_finder import PackageFinder from pip._internal.metadata import BaseDistribution class InstalledDistribution(AbstractDistribution): """Represents an installed package. This does not need any preparation as the required information has already been computed. """ def get_metadata_distribution(self) -> BaseDistribution: from pip._internal.metadata.pkg_resources import Distribution as _Dist assert self.req.satisfied_by is not None, "not actually installed" return _Dist(self.req.satisfied_by) def prepare_distribution_metadata( self, finder: PackageFinder, build_isolation: bool ) -> None: pass