这是一个初学者的有关问题~ 虚心求教python~

这是一个菜鸟的问题~~ 虚心求教python大虾~~
大虾们  我要从远端下载某个文件夹内的数据到本地应该怎么写   求用代码示例说明下诶   谢大虾们了~~~

  这是一个菜鸟的悲哀~~
[解决办法]
首先你要确定你的下载方式 SSH FTP HTTP Socket ？？
然后再说python用什么方式可以实现
[解决办法]

贴一个ftplib简单的使用示例：

'''
    a mini ftp client
'''

from ftplib import FTP,all_errors
from ftpc_cfg import *

#print usage
def help():
    with open('helptxt','r') as f:
        for line in f:print line


#list files function ,with closure...........
def list_files(ftp):
    index = [0]
    ftpfiles=[]
    def list_files_callback(line):
        print index[0],line
        index[0]=index[0]+1
        ftpfiles.append(line[line.rfind(' ')+1:])
    ftp.retrlines('LIST',list_files_callback)
    return ftpfiles


    

#run time cmd 
def rt_cmd(ftpinstance,current_path,files):
    cur_path = current_path
    cur_files = files
    ftp = ftpinstance

    def down_callback(data):
        pass

    while True:
        print 50*'*' 
        print ' cd@id: change server directory, e.g. cd@0'
        print ' get@id: download file , e.g. get@2'
        print ' put@localfile:  upload a local file' 
        print ' q/Q to exit.'
        print 50*'*'
        cmd = raw_input('>>>')
        
        if cmd=='q' or cmd=='Q':
            break
        if cmd[:3]=='cd@':
            index=0
            try:index=int(cmd[cmd.rfind('@')+1:])
            except BaseException,e:
                print 'error:',e
            else:
                try:
                    ftp.cwd(cur_files[index])
                    cur_files=list_files(ftp)
                except (all_errors,BaseException),e:
                    print 'error:',e
        if cmd[:4]=='get@':
            index=0
            try:index=int(cmd[cmd.rfind('@')+1:])
            except BaseException,e:
                print 'error:',e
            else:
                with open(DOWNPATH+cur_files[index],'wb') as f:
                    try:
                        ftp.retrbinary('RETR '+cur_files[index],f.write) 
 
                    except (all_errors,BaseException),e:
                        print 'error:',e
                    else:
                        print 'get',cur_files[index],'done'
        if cmd[:4]=='put@':
            localfile=''
            localfile=cmd[cmd.rfind('@')+1:]
            with open(localfile,'rb') as f:
                    try:
                        ftp.storbinary('STOR '+localfile[localfile.rfind('\\')+1:],f)
                    except (all_errors,BaseException),e:
                        print 'error:',e
                    else:
                        print 'put',localfile,'done'

        
def ftp_client_entry():
    try:
        #login 
        ftp=FTP()
        ftp.connect(HOST,21,60)
        ftp.login(USER,PWD)

        #enter root directory
        print ftp.getwelcome()
        ftpfiles=list_files(ftp)

        #runtime cmd
        rt_cmd(ftp,HOST+'/',ftpfiles)
        
        #clean up
        ftp.quit()
        ftp.close()
    except all_errors,e:
        print 'error:',e
    finally:
        print 'exitting..........'


if __name__ == '__main__':
    help()   
    ftp_client_entry()