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python regular expression with utf8 issue

I got a file which includes many lines of plain utf-8 text. Such as below, by the by, it's Chinese.

PROCESS:类型:关爱积分[NOTIFY] 交易号:2012022900000109 订单号:W12022910079166 交易金额:0.01元 交易状态:true 2012年2月29日 10:13:08

The file itself was saved in utf-8 format. file name is xx.txt

here is my python code, env is python2.7

#coding: utf-8
import re
pattern = re.compile(r'交易金额:(\d+)元')
for line in open('xx.txt'):
 match = pattern.match(line.decode('utf-8'))
 if match:
 print match.group()

The problematic thing here is I got no results.

I wanna get the decimal string from 交易金额:0.01元, in here, which is 0.01.

Why doesn't this code work? Can anyone explain it to me, I got no clue whatsoever.

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    still not working. can u provide your code to accomplish this little task, much appreciated Commented May 11, 2012 at 6:36

lang-py

AltStyle によって変換されたページ (->オリジナル) /