import re
rx = r'\d+'
incoming = ["Radio0","Tether0","Serial0/0","Eth0/0","Eth0/1","Eth1/0","Eth1/1","vlanX","modem0","modem1","modem2","modem3","modem6"]
outgoing = []
for item in incoming:
t = re.sub(rx, 'X', item)
if t not in outgoing:
outgoing.append(t)
print(outgoing)
aW1wb3J0IHJlCgpyeCA9IHInXGQrJwppbmNvbWluZyA9IFsiUmFkaW8wIiwiVGV0aGVyMCIsIlNlcmlhbDAvMCIsIkV0aDAvMCIsIkV0aDAvMSIsIkV0aDEvMCIsIkV0aDEvMSIsInZsYW5YIiwibW9kZW0wIiwibW9kZW0xIiwibW9kZW0yIiwibW9kZW0zIiwibW9kZW02Il0KCm91dGdvaW5nID0gW10KZm9yIGl0ZW0gaW4gaW5jb21pbmc6Cgl0ID0gcmUuc3ViKHJ4LCAnWCcsIGl0ZW0pCglpZiB0IG5vdCBpbiBvdXRnb2luZzoKCQlvdXRnb2luZy5hcHBlbmQodCkKcHJpbnQob3V0Z29pbmcp