Parse IPv6 address in string

[dcProgrammer]

Hi,

Maybe a bit of a newbie Python question... I have a dynamic string. Somewhere in that string is an IPv6 address. I need to store that address in a variable. Problem is it's not always in the same location in the string, surrounding text is always different, and from what I understand IPv6 addresses can be written a few different ways. Any quick thoughts?!


-d

 

[mikrom]

Use regular expression. I found some on web it's not simple:

http://stackoverflow.com/questions/319279/how-to-validate-ip-address-in-python

http://www.vankouteren.eu/blog/2009/05/working-ipv6-regular-expression/

Maybe there is a module for working with IPv6 ?

 

[IPGuru]

You say the surrounding text is always different
will teh IP6 address at least be separated by white-space or could you receive something like

addr:2001:db8:85a3::8a2e:370:7334

obviously if there is white-space either side of the address it will be much easier.


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[dcProgrammer]

Thanks for the input! Unfortunately, the surrounding text is all over the map. There may be brackets in one case, there may be white space in another, or the address may be butted up against other text.

I tried using the regular expression found here:

http://www.vankouteren.eu/blog/2009/05/working-ipv6-regular-expression/

but I couldn't get the syntax correct for Python. Anyone willing to take a stab at making it work in Python?