Validate MAC Address

Problem

Return True if the string is a valid MAC address in either colon-separated or dash-separated form, and False otherwise.

A MAC address has exactly six groups of exactly two hexadecimal digits. Hex digits are 0 through 9 and a through f in either case.

Hint

Reject strings that use neither separator or that mix the two.

case 1

in: ["00:1A:2B:3C:4D:5E"]

expected: true

case 2

in: ["00-1a-2b-3c-4d-5e"]

expected: true

case 3

in: ["00:1A:2B:3C:4D"]

expected: false

case 4

in: ["00:1G:2B:3C:4D:5E"]

expected: false

case 5

in: ["001A2B3C4D5E"]

expected: false

case 6

in: ["00:1A:2B:3C:4D:5E:6F"]

expected: false

Starter codePython

def valid_mac(s):
    # Your code here
    pass

6 test cases · run your code against them in the editor