Validate a MAC address using REGEX in Python 3

validate_mac.py

#!/usr/bin/env python3
# https://gist.github.com/EONRaider/c34f6799b9cf2259e90fce54a39d693c

__author__ = 'EONRaider, keybase.io/eonraider'

import re


def validate_mac(mac_address: str) -> bool:
    is_valid_mac = re.match(r'([0-9A-F]{2}[:]){5}[0-9A-F]{2}|'
                            r'([0-9A-F]{2}[-]){5}[0-9A-F]{2}',
                            string=mac_address,
                            flags=re.IGNORECASE)
    try:
        return bool(is_valid_mac.group())  # True if match
    except AttributeError:
        return False


if __name__ == '__main__':
    assert validate_mac('11:22:33:44:55:66') is True
    assert validate_mac('AA:BB:CC:DD:EE:FF') is True
    assert validate_mac('11:22:33:AA:BB:CC') is True
    assert validate_mac('11-22-33-AA-BB-CC') is True
    assert validate_mac('22:33:AA:BB-CC-DD') is False
    assert validate_mac('22-33-AA:BB:CC') is False
    assert validate_mac('22:33:HH:BB:CC') is False
    assert validate_mac('22:33:AA:BB:CC') is False
    assert validate_mac('') is False