代碼如下:
#!/usr/bin/py2
# -*- coding: utf-8 -*-
#encoding=utf-8

'''''
    ftp自動下載、自動上傳腳本，可以遞歸目錄操作
''' 

from ftplib import FTP
import os, sys, string, datetime, time
import socket  

class FtpClient:

    def __init__(self, host, user, passwd, remotedir, port=21):
        self.hostaddr = host
        self.username = user
        self.password = passwd
        self.remotedir  = remotedir          
        self.port     = port
        self.ftp      = FTP()
        self.file_list = []  

    def __del__(self):
        self.ftp.close()  

    def login(self):
        ftp = self.ftp
        try:
            timeout = 60
            socket.setdefaulttimeout(timeout)
            ftp.set_pasv(True)
            ftp.connect(self.hostaddr, self.port)
            print 'Connect Success %s' %(self.hostaddr)
            ftp.login(self.username, self.password)
            print 'Login Success %s' %(self.hostaddr)
            debug_print(ftp.getwelcome())
        except Exception:
            deal_error("Connect Error or Login Error")
        try:
            ftp.cwd(self.remotedir)
        except(Exception):
            deal_error('Change Directory Error')  

    def is_same_size(self, localfile, remotefile):
        try:
            remotefile_size = self.ftp.size(remotefile)
        except:
            remotefile_size = -1
        try:
            localfile_size = os.path.getsize(localfile)