Convert mac-address to device id

mac_to_deviceid.py

chars = {
    "0": "00",
    "1": "01",
    "2": "02",
    "3": "03",
    "4": "04",
    "5": "05",
    "6": "06",
    "7": "07",
    "8": "08",
    "9": "09",
    "A": "10",
    "B": "11",
    "C": "12",
    "D": "13",
    "E": "14",
    "F": "15"
}


def convert(mac_addr: str) -> str:
    device_id = str()
    for char in mac_addr.upper():
        if chars.get(char):
            device_id += chars.get(char)
        else:
            device_id += char
    return device_id


print(convert(input("Please enter your mac address: ")))