# encoding: UTF-8import re# 將正則表達式編譯成Pattern對象p = re.compile(r'(?P<folder>(/w+/)*)(?P<filename>/w+/.png)')# 使用Pattern匹配文本，獲得匹配結果，無法匹配時將返回None#match = pattern.match('<key>xxx/duobaojiemian_L/yangpizi.png</key>')the_str = """<key>XXXX/duobaojiemian2222_L/duobaojiemian_L/yangpizi.png</key>    <key>yangpizi2.png</key>    <key>yangpizi3.png</key> """for m in p.finditer(the_str):  # 使用Match獲得分組信息  PRint m.groupdict()print '-------------------------------'#f = lambda m: m.group().find('XXXX/') == -1 and 'XXXX/'+m.group() or m.group() def f(m):  s = m.group()  return s.find('XXXX/') == -1 and 'XXXX/'+s or sdef f2(m2):  d = m2.groupdict()  return d['folder']+'the_'+d['filename']print p.sub(f2, the_str)