从与模式匹配的目录中删除文件

Question

我正在尝试从与特定模式匹配的文件夹中删除文件，并遇到以下错误，如何解决此错误？

import os,re,shutil
def purge(dir, pattern):
    for f in os.listdir(dir):
        print f,pattern
        if re.search(pattern, f):
            os.remove(os.path.join(dir, f))
dir = '/home/username/chip/com/output/usr/share/firmware/tech/C-1234__s-B2/debug'
patterns =['*.map','*.map-sym-details','*logstrs.bin','*.exe','*.dis']
for pattern in patterns:
        purge(dir,pattern)

错误：-

Traceback (most recent call last):
  File "files_to_remove.py", line 20, in <module>
    purge(dir,pattern)
  File "files_to_remove.py", line 5, in purge
    if re.search(pattern, f):
  File "/usr/local/lib/python2.7/re.py", line 146, in search
    return _compile(pattern, flags).search(string)
  File "/usr/local/lib/python2.7/re.py", line 251, in _compile
    raise error, v # invalid expression
sre_constants.error: nothing to repeat