def get_ipv4_addresses()

in selftest/selftest.py [0:0]

• 14 lines of code
• 2 McCabe index (conditional complexity)

    def get_ipv4_addresses(interface_name: str) -> List[str]:
        """Get the IPv4 addresses of a given network interface using `ip addr`."""
        try:
            result = subprocess.run(
                ["ip", "-4", "addr", "show", interface_name],
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
                text=True,
                check=True,
            )

            ipv4_addresses = re.findall(r"inet (\d+\.\d+\.\d+\.\d+)", result.stdout)
            return ipv4_addresses
        except subprocess.CalledProcessError as error:
            logger.error("failed to get IPv4 address for %s: %r", interface_name, error)
            raise