import re
 
pattern = re.compile(r'(?:port (\d+))|(?:Logon ID:\t\t(\w+)\r\n\tLogon)')
s1 = 'port 1234'
s2 = 'Logon ID:\t\tadmin\r\n\tLogon'
 
print(pattern.match(s1).groups())
print(pattern.match(s2).groups())