# -*- encoding: utf8 -*- import os import sys import ftplib class FTPSync(object):     def __init__(self):         self.conn = ftplib.FTP('10.22.33.46', 'user', 'pass')         self.conn.cwd('/')        # 远端FTP目录         os.chdir('/data/')        # 本地下载目录     def get_dirs_files(self):         u''' 得到当前目录和文件, 放入dir_res列表 '''         dir_res = []         self.conn.dir('.', dir_res.append)         files = [f.split(None, 8)[-1] for f in dir_res if f.startswith('-')]         dirs = [f.split(None, 8)[-1] for f in dir_res if f.startswith('d')]         return (files, dirs)     def walk(self, next_dir):         print 'Walking to', next_dir         self.conn.cwd(next_dir)         try:             os.mkdir(next_dir)         except OSError:             pass         os.chdir(next_dir)         ftp_curr_dir = self.conn.pwd()         local_curr_dir = os.getcwd()         files, dirs = self.get_dirs_files()         print "FILES: ", files         print "DIRS: ", dirs         for f in files:             print next_dir, ':', f             outf = open(f, 'wb')             try:                 self.conn.retrbinary('RETR %s' % f, outf.write)             finally:                 outf.close()         for d in dirs:             os.chdir(local_curr_dir)             self.conn.cwd(ftp_curr_dir)             self.walk(d)     def run(self):         self.walk('.') def main():     f = FTPSync()     f.run() if __name__ == '__main__':     main()