Python - Ftp操作

由于将blog从七牛云迁移到了阿里虚拟空间上，操作全部由ftp来完成，脚本由php写的，更换成python，
后面更改成多线程上传吧,代码如下：

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

import sys
import os
import json
from ftplib import FTP

_XFER_FILE = 'FILE'
_XFER_DIR = 'DIR'


class Xfer(object):
    '''
    @note: upload local file or dirs recursively to ftp server 
    '''

    def __init__(self):
        self.ftp = None

    def __del__(self):
        pass

    def setFtpParams(self, ip, uname, pwd, port=21, timeout=60):
        self.ip = ip
        self.uname = uname
        self.pwd = pwd
        self.port = port
        self.timeout = timeout

    def initEnv(self):
        if self.ftp is None:
            self.ftp = FTP()
            print '### connect ftp server: %s ...' % self.ip
            self.ftp.connect(self.ip, self.port, self.timeout)
            self.ftp.login(self.uname, self.pwd)
            print self.ftp.getwelcome()

    def clearEnv(self):
        if self.ftp:
            self.ftp.close()
            print '### disconnect ftp server: %s!' % self.ip
            self.ftp = None

    def uploadDir(self, localdir='./', remotedir='/htdocs/'):
        if not os.path.isdir(localdir):
            return
        self.ftp.cwd(remotedir)
        for file in os.listdir(localdir):
            src = os.path.join(localdir, file)
            if os.path.isfile(src):
                self.uploadFile(src, file)
            elif os.path.isdir(src):
                try:
                    self.ftp.mkd(file)
                except:
                    sys.stderr.write('the dir is exists %s' % file)
                self.uploadDir(src, file)
        self.ftp.cwd('..')

    def uploadFile(self, localpath, remotepath='./'):
        if not os.path.isfile(localpath):
            return
        print '+++ upload %s to %s:%s' % (localpath, self.ip, remotepath)
        self.ftp.storbinary('STOR ' + remotepath, open(localpath, 'rb'))

    def __filetype(self, src):
        if os.path.isfile(src):
            index = src.rfind('\\')
            if index == -1:
                index = src.rfind('/')
            return _XFER_FILE, src[index + 1:]
        elif os.path.isdir(src):
            return _XFER_DIR, ''

    def upload(self, src):
        filetype, filename = self.__filetype(src)

        self.initEnv()
        if filetype == _XFER_DIR:
            self.srcDir = src
            self.uploadDir(self.srcDir)
        elif filetype == _XFER_FILE:
            self.uploadFile(src, filename)
        self.clearEnv()


if __name__ == '__main__':
    srcDir = r"./public"
    xfer = Xfer()
    xfer.setFtpParams('IP', 'username', 'password')
    xfer.upload(srcDir)