def __init__(self, package, version):
        """Construct a new requirement.

        :param package: the package name.
        :param version: a semver compatible version specification.
        """
        self.package = package
        self.version = version
        if self.version and not re.match(r"[<=>~]", version[:2]):
            self.version = "=={}".format(self.version)
def parse_record(self, metadata, line):
        factors = line.split('|')
        if len(factors) < 7:
            return

        registry, cc, type_, start, value, dete, status = factors[:7]
        if type_ not in ('ipv4', 'ipv6'):
            return

        return Record(metadata, start, type_, value, cc)