listFileInput.py

import re
import sys
#qqq.txt
'''111 222qq
3a
eee
'''
for name in open("C:\Python27\qqq.txt"):
  items = re.findall("\d+", name) 
  if(len(items)>0): 
    print items
'''
C:\Python27>.\listFileInput.py
['111', '222']
['3']
'''