Regexp. Cut string

I have strings like:

q.0.0.0.1-1111, q.0.0.0.1.tt_0-1111, tes-00000000-1111

I need cut this strings and get:

q.0.0.0-1111, q.0.0.0-1111, tes-1111

How i can get it with help of regexp?

>Solution :

If searching for specific one-pass regexp solution I’d suggest the following substitution:

import re

s = 'q.0.0.0.1-1111, q.0.0.0.1.tt_0-1111, tes-00000000-1111'
s = re.sub(r'(?<=[^-\s]{7})[^-]+(?=-)|(?<=-)[^-\s]+-', '', s)
print(s)

q.0.0.0-1111, q.0.0.0-1111, tes-1111