Calculating CIDR blocks

[Pekka Järvinen]

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.