Calculating CIDR blocks

[Pekka Järvinen]

On 20 huhti, 18:30, e... at holyrood.ed.ac.uk (Eddie Corns) wrote:
> =?iso-8859-1?q?Pekka_J=E4rvinen?= <pekka.jarvi... at gmail.com> writes:
> >On 20 huhti, 14:34, e... at holyrood.ed.ac.uk (Eddie Corns) wrote:
> >> Look at:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/466298
> >> it handles most of the logic of combining IP ranges.
>
> >> Eddie
> >I'm getting error:
> >Traceback (most recent call last):
> >  File "ipr.py", line 5, in <module>
> >    x = ipv4.IP4Range(ips)
> >  File "IP4Range.py", line 119, in __init__
> >    raise TypeError("Invalid argument.")
> >TypeError: Invalid argument.
>
> I haven't used this module for some time but if I recall your requirements
> properly you need something like:
>
> >>> R=IP4.IP4Range()
> >>> for i in ips:
>
> ...  R=R|IP4.IP4Range(i)
> ...>>> for m in R.itermasks():
>
> ...  print m
> ...
> 192.168.0.0/26
> 192.168.0.64/27
> 192.168.0.96/29
> 192.168.0.104/30
> 192.168.0.108/31
> 192.168.0.110/32
> 192.168.0.128/25
> 192.168.0.112/28
>
>
>
> There may be an easier way my memory is hazy.
>
> Eddie

It does exactly what I'm after! Thanks a lot! :)