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python ftplib模块制作ftp客户端

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#!/usr/bin/python
#-*- coding:utf-8 -*-
from ftplib import FTP      #加载ftp模块
ftp=FTP()                   #设置变量
ftp.set_debuglevel(2)       #打开调试级别2,显示详细信息
ftp.connect("IP","port")    #连接的ftp sever和端口
ftp.login("user","password")#连接的用户名,密码
print ftp.getwelcome()      #打印出欢迎信息
ftp.cmd("xxx/xxx")          #更改远程目录
bufsize=1024                #设置的缓冲区大小
filename="filename.txt"     #需要下载的文件
file_handle=open(filename,"wb").write                   #以写模式在本地打开文件
ftp.retrbinaly("RETR filename.txt",file_handle,bufsize) #接收服务器上文件并写入本地文件
ftp.set_debuglevel(0)       #关闭调试模式
ftp.quit                    #退出ftp

``````python
ftp.dir()                   #显示目录下文件信息
ftp.mkd(pathname)           #新建远程目录
ftp.pwd()                   #返回当前所在位置
ftp.rmd(dirname)            #删除远程目录
ftp.delete(filename)        #删除远程文件
ftp.rename(fromname, toname)#将fromname修改名称为toname。
ftp.storbinaly("STOR filename.txt",file_handel,bufsize) #上传目标文件

```一个FTP完整实例```python
#coding:utf-8
from ctypes import *
import os
import sys
import ftplib

class myFtp:
    ftp = ftplib.FTP()
    bIsDir = False
    path = ""
    def __init__(self, host, port='21'):
        self.ftp.set_debuglevel(2) #打开调试级别2,显示详细信息 
        #self.ftp.set_pasv(0)    #0主动模式 1 #被动模式
        self.ftp.connect( host, port )

    def Login(self, user, passwd ):
        self.ftp.login( user, passwd )
        print self.ftp.welcome
    def DownLoadFile( self, LocalFile, RemoteFile ):
        file_handler = open( LocalFile, 'wb' )
        self.ftp.retrbinary( "RETR %s" %( RemoteFile ), file_handler.write ) 
        file_handler.close()
        return True

    def UpLoadFile( self, LocalFile, RemoteFile ):
        if os.path.isfile( LocalFile ) == False:
            return False
        file_handler = open( LocalFile, "rb" )
        self.ftp.storbinary( 'STOR %s'%RemoteFile, file_handler, 4096 )
        file_handler.close()
        return True

    def UpLoadFileTree( self, LocalDir, RemoteDir ):
        if os.path.isdir( LocalDir ) == False:
            return False
        LocalNames = os.listdir( LocalDir )
        print RemoteDir
        self.ftp.cwd( RemoteDir )
        for Local in LocalNames:
            src = os.path.join( LocalDir, Local)
            if os.path.isdir( src ):
                self.UpLoadFileTree( src, Local )
            else:
                self.UpLoadFile( src, Local )

        self.ftp.cwd( ".." )
        return

    def DownLoadFileTree( self, LocalDir, RemoteDir ):
        if os.path.isdir( LocalDir ) == False:
            os.makedirs( LocalDir )
        self.ftp.cwd( RemoteDir )
        RemoteNames = self.ftp.nlst()  
        for file in RemoteNames:
            Local = os.path.join( LocalDir, file )
            if self.isDir( file ):
                self.DownLoadFileTree( Local, file )                
            else:
                self.DownLoadFile( Local, file )
        self.ftp.cwd( ".." )
        return

    def show( self, list  ):
        result = list.lower().split( " " )
        if self.path in result and "<dir>" in result:
            self.bIsDir = True

    def isDir( self, path ):
        self.bIsDir = False
        self.path = path
        #this ues callback function ,that will change bIsDir value
        self.ftp.retrlines( 'LIST', self.show )
        return self.bIsDir

    def close( self ):
        self.ftp.quit()

ftp = myFtp('********')
ftp.Login('*****','*****')

#ftp.DownLoadFile('TEST.TXT', 'others\\runtime.log')#ok
#ftp.UpLoadFile('runtime.log', 'others\\runtime.log')#ok
#ftp.DownLoadFileTree('bcd', 'others\\abc')#ok
#ftp.UpLoadFileTree('aaa',"others\\" )

ftp.close()
print "ok!"

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