proxylistfilter.py

#!/usr/bin/env python3

if __name__ == '__main__':
 import re
 try:
  while True:
   l = input().split()
   t = '\n'.join([' '.join(i.split(':', 1)) for i in l if re.match('\\d+\\.\\d+\\.\\d+\\.\\d+:\\d+', i)])
   if t:
    print(t)
   for i in range(len(l)-1):
    if re.match('\\d+\\.\\d+\\.\\d+\\.\\d+', l[i]) and re.match('\\d+', l[i+1]):
     print(l[i], l[i+1])
 except EOFError:
  pass