Python FTP两个文件夹间的同步实例代码

# -*- coding: utf-8 -*- 
''''''' 
  ftp自动检测源文件夹的更新，将源文件夹更新的内容拷贝到目标文件夹中 
  使用树的层序遍历算法，支持深度目录拷贝 
''' 
import os 
from ftplib import FTP 
import os,sys,string,datetime,time 
import shutil 
import socket 
class MyUpdateMonitor(object): 
  def __init__(self, hostaddr, username, password, remotedir_old, remotedir_new, port = 21): 
    self.hostaddr = hostaddr 
    self.username = username 
    self.password = password 
    self.remotedir_old = remotedir_old 
    self.remotedir_new = remotedir_new 
    # self.port = port 
    self.ftp = FTP() 
    # 源文件文件队列 
    self.FolderListOld = [] 
    # 目标文件文件队列 
    self.FolderListNew = [] 
  def __del__(self): 
    self.ftp.close() 
    self.FolderListOld.clear() 
    self.FolderListNew.clear() 
  def FtpLogin(self): 
    ftp = self.ftp 
    try: 
      timeout = 300 
      socket.setdefaulttimeout(timeout) 
      ftp.set_pasv(True) 
      print u'开始连接到 %s' %(hostaddr) 
      ftp.connect(hostaddr) 
      print u'成功连接到 %s' %(hostaddr) 
      print u'开始登录到 %s' %(hostaddr) 
      ftp.login(username, password) 
      print u'成功登录到 %s' %(hostaddr) 
      ftp.getwelcome() 
    except Exception, e: 
      print 'find exception now:',e 
  # 使用树的层序遍历来检查文件目录 
  def LevelOrderFolder(self): 
    # 新增文件起始位置和终止位置 
    start = 0 
    end = 0 
    try: 
      # 将根目录放入队列中 
      self.FolderListOld.append(self.remotedir_old) 
      self.FolderListNew.append(self.remotedir_new) 
      while not (0 == len(self.FolderListOld)): 
        end = start 
        # 将文件夹下的文件全部压入队列 
        if os.path.isdir(self.FolderListOld[0]): 
          files = os.listdir(self.FolderListOld[0]) 
          for file in files: 
            self.FolderListOld.append(os.path.join(self.FolderListOld[0], file)) 
          # 确定新增文件在队列中的位置 
          end += len(files) 
        # 将已经查看的文件夹删除 
        del self.FolderListOld[0] 
        # 检查目标文件夹该级目录 
        if os.path.isdir(self.FolderListNew[0]): 
          # 将该级目录的文件都列出 
          files = os.listdir(self.FolderListNew[0]) 
          # 检查源文件该级目录下的文件在目标该级目录下是否有 
          for file in self.FolderListOld[start:end]: 
            temp = file.split('\\') 
            if temp[-1] in files: 
              # 这里判断文件大小是否一致，不一致拷过去 
              if os.path.isfile(file) and not os.path.getsize(file) == os.path.getsize(os.path.join(self.FolderListNew[0], temp[-1])): 
                print 'Find the file（%s） size is changed!\n' % file 
                # print r'Start delete...\n' 
                # os.remove(os.path.join(self.FolderListNew[0], temp[-1])) 
                # print r'delete is over...\n' 
                print 'Start Copy...\n' 
                shutil.copyfile(file, os.path.join(self.FolderListNew[0], temp[-1])) 
                print 'Copy is over...\n' 
              # # 如果是文件夹存在，但是修改过，没有必要全部拷贝文件夹，可以到文件夹中拷贝单个文件 
              # if os.path.isfile(file) and not (os.path.getmtime(file) == os.path.getmtime(os.path.join(self.FolderListNew[0], temp[-1]))): 
              #   print 'Find the file（%s） size is changed!\n' % file 
              #   changetime = os.path.getmtime(file) #以毫秒为单位的时间，自1970年开始到现今 
              #   changetime = float(changetime) 
              #   print 'Change Time is', time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(changetime)), r'\n' 
              # 
              #   print 'Start Copy...\n' 
              #   shutil.copyfile(file, os.path.join(self.FolderListNew[0], temp[-1])) 
              #   print 'Copy is over...\n' 
            else: 
              if os.path.isdir(file): 
                # 如果是文件夹不存在使用，目录树拷贝 
                print 'Find the folder（%s） is updated!\n' % file 
                print 'Start Copy...\n' 
                shutil.copytree(file, os.path.join(self.FolderListNew[0], temp[-1])) 
                print 'Copy is over...\n' 
              else: 
                # 如果是文件 
                print 'Find the file（%s） is updated!\n' % file 
                print 'Start Copy...\n' 
                shutil.copyfile(file, os.path.join(self.FolderListNew[0], temp[-1])) 
                print 'Copy is over...\n' 
            self.FolderListNew.append(os.path.join(self.FolderListNew[0], temp[-1])) 
        del self.FolderListNew[0] 
        start = end - 1 
    except Exception, e: 
      print 'find exception now:',e 
if __name__ == '__main__': 
  # 配置如下变量 
  hostaddr = r'10.204.16.28' # ftp地址 
  username = r' ' # 用户名 
  password = r' ' # 密码 
  remotedir_old = r'\\10.204.16.28\Home\TDME\Test\Old\TMUMH_1.6.1055' 
  remotedir_new = r'\\10.204.16.28\Home\TDME\Test\New\TMUMH_1.6.1055' 
  monitorfileupdae = MyUpdateMonitor(hostaddr, username, password, remotedir_old, remotedir_new) 
  monitorfileupdae.FtpLogin() 
  while True: 
    print 'Start Check Update...\n' 
    monitorfileupdae.LevelOrderFolder() 
    print 'Check Update is Over...\tSleep one hour...' 
    time.sleep(3600) 
  print 'hello'