Python FTP操作类代码分享

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

'''''
 ftp自动下载、自动上传脚本，可以递归目录操作
''' 
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)
 except:
 localfile_size = -1
 debug_print('lo:%d re:%d' %(localfile_size, remotefile_size),)
 if remotefile_size == localfile_size:
 return 1
 else:
 return 0
 def download_file(self, localfile, remotefile):
 if self.is_same_size(localfile, remotefile):
 return
 else:
 pass
 file_handler = open(localfile, 'wb')
 self.ftp.retrbinary('RETR %s'%(remotefile), file_handler.write)
 file_handler.close()
 def download_files(self, localdir='./', remotedir='./'):
 try:
 self.ftp.cwd(remotedir)
 except:
 return
 if not os.path.isdir(localdir):
 os.makedirs(localdir)
 self.file_list = []
 self.ftp.dir(self.get_file_list)
 remotenames = self.file_list
 for item in remotenames:
 filetype = item[0]
 filename = item[1]
 local = os.path.join(localdir, filename)
 if filetype == 'd':
 self.download_files(local, filename)
 elif filetype == '-':
 self.download_file(local, filename)
 self.ftp.cwd('..') 
 def upload_file(self, localfile, remotefile):
 if not os.path.isfile(localfile):
 return
 if self.is_same_size(localfile, remotefile):
 return
 file_handler = open(localfile, 'rb')
 self.ftp.storbinary('STOR %s' %remotefile, file_handler)
 file_handler.close() 
 def upload_files(self, localdir='./', remotedir = './'):
 if not os.path.isdir(localdir):
 return
 localnames = os.listdir(localdir)
 self.ftp.cwd(remotedir)
 for item in localnames:
 src = os.path.join(localdir, item)
 if os.path.isdir(src):
 try:
 self.ftp.mkd(item)
 except:
 debug_print('Directory Exists %s' %item)
 self.upload_files(src, item)
 else:
 self.upload_file(src, item)
 self.ftp.cwd('..')
 def mkdir(self, remotedir='./'):
 try:
 self.ftp.mkd(remotedir)
 except:
 debug_print('Directory Exists %s' %remotedir)
 def get_file_list(self, line):
 ret_arr = []
 file_arr = self.get_filename(line)
 if file_arr[1] not in ['.', '..']:
 self.file_list.append(file_arr)
 def get_filename(self, line):
 pos = line.rfind(':')
 while(line[pos] != ' '):
 pos += 1
 while(line[pos] == ' '):
 pos += 1
 file_arr = [line[0], line[pos:]]
 return file_arr
def debug_print(str):
 print (str)
def deal_error(e):
 timenow = time.localtime()
 datenow = time.strftime('%Y-%m-%d', timenow)
 logstr = '%s Error: %s' %(datenow, e)
 debug_print(logstr)
 file.write(logstr)
 sys.exit()

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