In Perl or Javascript, it's a one-liner:
my($net, $bits) = split('/', $data, 2);
or
let [net, bits] = data.split('/');
Is there a one-liner in Python? As far as I can tell, it takes several lines. For example:
res = data.split('/')
ip, bits = res[0], None
if len(res) == 2:
bits = res[1]
or, better,
res = data.split('/')
ip, bits = res if len(res) == 2 else res[0], None
You can use partition() for this if you don't mind the slight ugliness of an unused variable:
net, _, bits = "8.8.8.8".partition('/')
net, bits
# ('8.8.8.8', '')
net, _, bits = "192.168.0.0/24".partition('/')
net, bits
# ('192.168.0.0', '24')
You could use list unpacking when / is in the IP address:
ip, bits = data.split('/') if '/' in data else data, None
The ternary operator accounts for when you don't have bits information, in which case bits = None.
The simplest approach would be:
ip, *bits = data.split('/')
his avoid the not enough values to unpack problem. Just remember that bits, if exists, will be inside a list.