def load_installed_version(self):
        installed_packages = get_installed_pypackages()
        if self.package in installed_packages:
            self.version = "=={}".format(
                installed_packages[self.package].version)
def get_dpo_proto(addr):
    if ip_address(addr).version == 6:
        return DpoProto.DPO_PROTO_IP6
    else:
        return DpoProto.DPO_PROTO_IP4