Help required to print MAC addresses

[anna]

for line in output.decode('utf-8').split('\n')[2:]:
    print (line)
    data = [field.strip() for field in line.split('|')[:3]]
    print (data)
    mac = [elm for elm in data[0].split() if elm]
    mac_addr = '{:0>2}:{:0>2}:{:0>2}:{:0>2}:{:0>2}:{:0>2}'.format(*mac)
    bport, vlan = data[1:]
    print("{!s:^23}\t{!s:^5}\t{!s:^5}".format(mac, bport, vlan))

Yes Wavic, already tried.below is the output, tuple is out of range

Output:
MCR64A >
    mac address    | bport | vlan  | flow agg |static|aging|proccess|deny_sa
[u'mac address', u'bport', u'vlan']
Traceback (most recent call last):
  File "ecicollector-1.py", line 40, in <module>
    mac_addr = '{:0>2}:{:0>2}:{:0>2}:{:0>2}:{:0>2}:{:0>2}'.format(*mac)
IndexError: tuple index out of range