python对文件目录的操作方法实例总结

#coding:utf-8
import StringIO
import json
import os
import time
import glob
import shutil
DATETIMEFORMATER='%Y-%m-%d %X'
#only for windows
RECYCLED_FOLDER_NAME='Recycled'
def dateformat(datetime):
  '''return GMT TIME,need to change to LOCAL TIME'''
  return time.strftime( DATETIMEFORMATER,time.gmtime(datetime) )
def filesizeformat(size):
  ''' Convert file size to string '''
  KBSIZE=1024.00
  strSize='0 Byte'
  if (size < KBSIZE):
    strSize = '%.2f Byte' % (size)
  elif (size >= KBSIZE and size < KBSIZE**2):
    strSize = '%.2f K' % (size / KBSIZE)
  elif (size >= KBSIZE**2 and size < KBSIZE**3):
    strSize = '%.2f M' % (size / KBSIZE / KBSIZE)
  elif (size >= KBSIZE**3):
    strSize = '%.2f G' % (size / KBSIZE / KBSIZE / KBSIZE)
  return strSize
def listdir(path):
  if os.path.isfile(path):
    return '[]'
  allFiles=os.listdir(path)
  retlist=[]
  for cfile in allFiles:
    fileinfo={}
    filepath=(path+os.path.sep+cfile).replace("\\","/")
    if cfile==RECYCLED_FOLDER_NAME:
      continue
    if os.path.isdir(filepath):
      fileinfo['isfile'] = '0'
      fileinfo['size'] = getfoldersize(filepath)
    else:
      fileinfo['isfile'] = '1'
      fileinfo['size'] = os.path.getsize(filepath)
    fileinfo['name'] = cfile
    fileinfo['lastvisittime'] = dateformat( os.path.getatime(filepath) )
    fileinfo['createtime'] = dateformat( os.path.getctime(filepath) )
    fileinfo['lastmodifytime'] = dateformat( os.path.getmtime(filepath) )
    retlist.append(fileinfo)
  retStr=json.dumps(retlist,encoding='utf-8')
  return retStr
def deletefile(path):
  if os.path.exists(path):
    os.remove(path)
def rename(old,new):
  if os.path.exists(old):
    os.rename(old, new)
def checkoutfile(path):
  pass
def checkinfile(path):
  pass
def lockfile(path):
  pass
def unlockfile(path):
  pass
def createfolder(path):
  if not os.path.exists(path):
    os.mkdir(path)
def createfolders(path):
  if not os.path.exists(path):
    os.makedirs(path);
def deletefolder(path):
  if os.path.isdir(path):
    os.rmdir(path)
def retreeExceptionHandler(fun,path,excinfo):
  pass
def deletefolders(path):
#  if os.path.isdir(path):
#    os.removedirs(path)
  shutil.rmtree(path,ignore_errors=False,onerror=retreeExceptionHandler)
def movefile(old,new):
  shutil.move(old, new)
def getfoldersize(path):
  size = 0
  for root, dirs, files in os.walk(path):
    size += sum([os.path.getsize(os.path.join(root, name)) for name in files])
  return size
def searchfile(path,ext):
  returnList=glob.glob1(path, ext)
  return returnList
if __name__=='__main__':
  listdir('c:/vDriver')
  #searchfile('c:/vDriver','*.log')