def prepatch(version: Version) -> Version: return version.next_patch().first_prerelease()
def prerelease(version: Version) -> Version: if version.is_unstable(): assert version.pre return Version(version.epoch, version.release, version.pre.next()) else: return version.next_patch().first_prerelease()
def patch(version: Version) -> Version: return version.next_patch()