How do I validate the format of a MAC address?

Question

What\'s the best way to validate that an MAC address entered by the user?

The format is HH:HH:HH:HH:HH:HH, where each H is a hexadecimal ch

Answer 1

pattern = "^(([0-9]{2}|[a-f]{2}|[0-9][a-f]|[a-f][0-9])\:){5}([0-9]{2}|[a-f]{2}|[0-9][a-f]|[a-f]|[0-9])$"

valid_mac_check =re.search(pattern,"00:29:15:80:4E:4A",re.IGNORECASE)
print(valid_mac_check.group())