Python: Efficient way to compare ip addresses in a csv file -


i have csv file has list of following ip addresses:

ssh ip                nfs ip                iscsi ip 10.xxx.xxx.aaa        172.xxx.xxx.aaa       172.yyy.xxx.aaa 10.xxx.xxx.bbb        172.xxx.xxx.bbb       172.yyy.xxx.bbb 10.xxx.xxx.ccc        172.xxx.xxx.ccc       172.yyy.xxx.ccc 10.xxx.xxx.ddd        172.xxx.xxx.ddd       172.yyy.xxx.ddd ...                   ...                   ... ...                   ...                   ...

i want compare last octets in ssh ip, nfs ip , iscsi ip , if match, want execute few commands, ssh'ing box.

i want know efficient way compare last octets, considering case. around highly appreciated.

p.s. not have problems in ssh'ing box, planning use paramiko library.

i'd use re, , here 1 example.

code:

import re regex = re.compile('([^\.]+\.){3}(?p<ssh>[^\s\n\.]+)(\s+([^\.]+\.){3}(?p=ssh)){2}\n')  open(file) ff:     line in ff:         m = regex.search(line)         if m:             # want             print m.group()

file content:

ssh ip                nfs ip                iscsi ip 10.xxx.xxx.aaa        172.xxx.xxx.aaa       172.yyy.xxx.aaa 10.xxx.xxx.bbb        172.xxx.xxx.bbb       172.yyy.xxx.bbb 10.xxx.xxx.ccc        172.xxx.xxx.ccc       172.yyy.xxx.ccc 10.xxx.xxx.ddd        172.xxx.xxx.ddd       172.yyy.xxx.ddd 10.xxx.xxx.eee        172.xxx.xxx.eee       172.yyy.xxx.eeef 10.xxx.xxx.fff        172.xxx.xxx.fff       172.yyy.xxx.ffg

ouput:

10.xxx.xxx.aaa        172.xxx.xxx.aaa       172.yyy.xxx.aaa  10.xxx.xxx.bbb        172.xxx.xxx.bbb       172.yyy.xxx.bbb  10.xxx.xxx.ccc        172.xxx.xxx.ccc       172.yyy.xxx.ccc  10.xxx.xxx.ddd        172.xxx.xxx.ddd       172.yyy.xxx.ddd

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