ftplib模块编写简单的ftp服务

 from ftplib import *
 import os,readline
 import sys
 class MyFtp:
      ftp = FTP()   #建立一个ftp对象的链接
      def __init__(self, host, port=''):         #构造函数初始化
          self.ftp.connect(host=host,timeout=100)  #连接ftp服务器
      def Login(self, user, passwd):               #登录函数
          self.ftp.login(user=user, passwd=passwd )
          print (self.ftp.welcome)                  #登陆成功后ftp显示欢迎信息

          def DownLoadFile(self, LocalFilePath, RemoteFilePath):
          file = open(LocalFilePath, 'wb')
          self.ftp.retrbinary( "RETR %s" %( RemoteFilePath ), file.write )  #下载文件到本地
          file.close()
          return True

      def DownLoadFileTree(self, LocalFileDir, RemoteFileDir):
          if os.path.isdir( LocalfileDir ) == False:     #如果传入本地的不是目录
              os.makedirs(LocalFileDir)                   #就在本地新建该目录
          self.ftp.cwd(RemoteFileDir)                     #切换到远程目录
          RemoteFiles = self.ftp.nlst()                   #把远程目录里的所有文件都传给 RemoteFiles变量
          for file in RemoteFiles:
              Local = os.path.join(LocalFilesDir, file )
              chang = os.path.join(RemoteDir,file )
              if self.IsDir(chang):
                  self.DownLoadFileTree(Local, chang)
              else:
                  self.DownLoadFile( Local, chang)
          self.ftp.cwd( ".." )

      def IsDir(self, path):
          if os.path.isdir(path) == True:
             self.juge = True
          else:
              self.juge = False
          return self.juge

      def UpLoadFileTree(self, LocalFileDir, RemoteFileDir):
          if os.path.isdir(LocalFileDir) == False:
              print( 'wrong ！Please Input Dir')
          if os.path.isdir(RemoteFileDir) == False:
              os.makedirs(RemoteFileDir)
          LocalFiles = os.listdir(LocalFileDir)
          self.ftp.cwd(RemoteFileDir)
          for Local in LocalFiles:
             src = os.path.join( LocalFileDir, Local)
             chang = os.path.join(RemoteFileDir,Local)
             if os.path.isdir(src):
              self.UpLoadFileTree(src,chang)
             else:
              self.UpLoadFile(src,chang)
         self.ftp.cwd( ".." )

      def UpLoadFile(self, LocalFilePath, RemoteFilePath):
          if os.path.isfile( LocalFilePath ) == False:
              return False
          file = open(LocalFile, "rb")
          self.ftp.storbinary('STOR %s'%RemoteFile, file, 4096)
          file.close()

 ftp = myFtp('192.168.19.153')   #实例化

 def Login():
     ftp.Login('root','root')
 def Update():
     print('\033[34mUping.....\033[m')
     ftp.UpLoadFileTree('main', "/xxx" )
     print('Done')
 def DownLoad():
     print('\033[34mDowning.....\033[m')
     ftp.DownLoadFileTree('localDir','remoteDir')
         print ('Done')
 def Close():
      self.ftp.quit()

 def Menu():
     print ("""\033[;32mWelcome \033[0m\n""")
     print ("\t(1) Login")
     print ("\t(2) Update")
     print ("\t(3) DownLoad")
     print ("\t(4) close")
     while True:
        choices = raw_input('\033[32mChoice>>\033[m').strip()
        if len(choices) == 0:continue
        if choices   == '':Login()
        elif choices == '':Update()
        elif choices == '':DownLoad()
        elif choices == '':close()

 Menu()

http://www.cnblogs.com/zhuweiblog/p/5154752.html