python FTP问题

# 例：FTP编程  

from ftplib import FTP  

      

ftp = FTP()  

timeout = 30  

port = 21  

ftp.connect('192.168.1.188',port,timeout) # 连接FTP服务器  

ftp.login('UserName','888888') # 登录  

print ftp.getwelcome()  # 获得欢迎信息   

ftp.cwd('file/test')    # 设置FTP路径  

list = ftp.nlst()       # 获得目录列表  

for name in list:  

    print(name)             # 打印文件名字  

path = 'd:/data/' + name    # 文件保存路径  

f = open(path,'wb')         # 打开要保存文件  

filename = 'RETR ' + name   # 保存FTP文件  

ftp.retrbinary(filename,f.write) # 保存FTP上的文件  

ftp.delete(name)            # 删除FTP文件  

ftp.storbinary('STOR '+filename, open(path, 'rb')) # 上传FTP文件  

ftp.quit()                  # 退出FTP服务器  

#!/usr/bin/python  

# -*- coding: utf-8 -*-  

import ftplib  

import os  

import socket  

  

HOST = 'ftp.mozilla.org'  

DIRN = 'pub/mozilla.org/webtools'  

FILE = 'bugzilla-3.6.7.tar.gz'  

def main():  

    try:  

        f = ftplib.FTP(HOST)  

    except (socket.error, socket.gaierror):  

        print 'ERROR:cannot reach " %s"' % HOST  

        return  

    print '***Connected to host "%s"' % HOST  

  

    try:  

        f.login()  

    except ftplib.error_perm:  

        print 'ERROR: cannot login anonymously'  

        f.quit()  

        return  

    print '*** Logged in as "anonymously"'  

    try:  

        f.cwd(DIRN)  

    except ftplib.error_perm:  

        print 'ERRORL cannot CD to "%s"' % DIRN  

        f.quit()  

        return  

    print '*** Changed to "%s" folder' % DIRN  

    try:  

        #传一个回调函数给retrbinary() 它在每接收一个二进制数据时都会被调用  

        f.retrbinary('RETR %s' % FILE, open(FILE, 'wb').write)  

    except ftplib.error_perm:  

        print 'ERROR: cannot read file "%s"' % FILE  

        os.unlink(FILE)  

    else:  

        print '*** Downloaded "%s" to CWD' % FILE  

    f.quit()  

    return  

  

if __name__ == '__main__':  

    main()  

'NoneType' object has no attribute 'storbinary'

ftp.storbinary('STOR '+remotepath+filename, fp, bufsize)