python抓取文件夹的所有文件

#!/user/bin/python 
# -*- coding:utf8 -*- 
 
import Basic 
import os 
 
##################################################### 
########    Input      #### 
folder = "D:\\安装包" 
folder = folder.encode("gbk") 
 
########    Global      #### 
fileList = [] 
allFiles = [] 
tree = [] 
level = 0 
##################################################### 
 
try: 
 if folder is None or len(folder) == 0: 
  folder = os.curdir 
 
 if os.path.isdir(folder): 
  childFile = os.listdir(folder) 
  fileList = ["%s" % (folder+os.path.sep+f) for f in childFile] 
 
  node = {'file':folder, 'level':level} 
  tree.append(node) 
 
  while fileList is not None and len(fileList) > 0: 
   allFiles.append(""+fileList[0]) 
 
   if os.path.isdir(fileList[0]): 
    childFile = os.listdir(fileList[0]) 
 
    if childFile is not None and len(childFile) > 0: 
     fileList = fileList + ["%s" % (fileList[0]+os.path.sep+ft) for ft in childFile] 
    else: 
     pass 
   else: 
    pass 
 
   fileList.pop(0) 
 
  print "\n".join(["%s" % f for f in allFiles]) 
 else: 
  print 'not folder, no child' 
 
except Exception,x: 
 print x