python遍历文件夹获取指定格式的文件

1、源码如下：

import os
import os.path
import sys
import glob
def getalltxtfilename2(path): 
    txtfilenames=[] 
    for dirpath,dirnames,filenames in os.walk(path): 
        filenames=filter(lambda filename:filename[-4:]=='.mp3',filenames) 
        filenames=map(lambda filename:os.path.join(dirpath,filename),filenames) 
        txtfilenames.extend(filenames)
        #print filenames
    return txtfilenames
  
 
   
if __name__ == "__main__" :
 try :
    filenames=getalltxtfilename2("E:\cocos2d-x-2.2.2\projects\Constellation\Resources\Sound")
    for filename in filenames:
        print filename
 except :
  print "execute list_file_dir fun error"import os
import os.path
import