[Tutor] Validating String contains IP address

[Ed Manning]

Hello 

what am I going wrong here? i need to validate this is an IP or ask the question again 

untrust_ip_address = raw_input('\nEnter the  untrust IP ''"Example 172.20.2.3/28"'':')
while not ipaddress.ip_network untrust_ip_address:
           untrust_ip_address = raw_input('\nEnter the  untrust IP ''"Example 172.20.2.3/28"'':')
 
 
> On Apr 1, 2017, at 12:29 PM, Alex Kleider <akleider at sonic.net> wrote:
> 
> On 2017-03-31 18:01, Mats Wichmann wrote:
>> On 03/31/2017 06:44 PM, Alex Kleider wrote:
>>> On 2017-03-31 16:35, Ed Manning wrote:
>>>> What's the best way to validate a string contains a IP address
>>>> Sent from my iPad
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>>> The re module perhaps?
> 
>> This assumes "an IP address" is the four dotted numbers characteristic
>> of IPv4. These days that's a bad assumption unless you're absolutely
>> sure an IPv6 address can never appear.  Can you?
> 
> Good point! I hadn't considered IPV6 and didn't know about the ipaddress module.
> Live and learn.