import re
myregex = re.compile(r'''
(ip\s+prefix-list)\s+
(?P<prefname>\w+)\s+
(?P<prefseq>seq\s+\d+)\s+
(permit|deny)
''', re.VERBOSE)
preflist = 'ip prefix-list PL_FROM_7600 seq 255 permit 192.168.0.0/15 ge 20 le 25'
mymatch = myregex.search(preflist)
print(mymatch)