Python中使用正则表达式

#!/usr/bin/env python

import re

def run_re():
pattern = 'ERROR'
re_obj = re.compile(pattern)

infile = open('/home/udb/jt.txt', 'r')
match_count = 0
lines = 0
for line in infile:
match = re_obj.search(line)
if match:
match_count += 1
lines += 1
return (lines, match_count)

if __name__ == "__main__":
lines, match_count = run_re()
print 'LINES--->', lines
print 'MATCHES--->', match_count