本文实例讲述了python使用ftplib实现简易ftp客户端的方法。分享给大家供大家参考。具体实现方法如下:
#!/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
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:
#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 “” 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!”
希望本文所述对大家的python程序设计有所帮助。