regular expression for ipaddress and mac address

Question

can anyone suggest me the regular expression for ip address and mac address ?

i am using python & django

for example , http://[ipaddress]/SaveData/127.0.

Answer 1

Your regular expression only contains two capturing groups (parentheses), so it isn't storing the entire address (the first group gets "overwritten"). Try these:

# store each octet into its own group
r"([\dA-F]{2})[-:]([\dA-F]{2})[-:]([\dA-F]{2})[-:]([\dA-F]{2})[-:]([\dA-F]{2})[-:]([\dA-F]{2})"
# store entire MAC address into a single group
r"([\dA-F]{2}(?:[-:][\dA-F]{2}){5})"

IP addresses get trickier because the ranges are binary but the representation is decimal.

# store each octet into its own group
r"(\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))\.(\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))"
# store entire IP address into a single group
r"((?:\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))(?:\.(?:\d|[1-9]\d|1\d\d|2(?:[0-4]\d|5[0-5]))){3})"