Python uses Ftplib to implement a simple FTP client approach

This example describes how Python implements a simple FTP client using Ftplib. Share to everyone for your reference. The implementation method is as follows:

#!/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) c2/> #打开调试级别2, Show Details ftp.connect ("IP", "Port")  #连接的ftp Sever and Port Ftp.login ("User", "password") #连接的用户名, password 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# Open the file locally in write mode 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

An FTP Full instance:

#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= '): Self.ftp.set_debuglevel (2) #打开调试级别2, show details #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.ft P.login (user, passwd) print Self.ftp.welcome def DownLoadFile (self, LocalFile, remotefile): File_handler = O Pen (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.ft P.storbinary (' STOR%s '%remotefile, File_handler, 4096) File_handler.close () return True def uploadfiletree (sel F, 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 #t His ues callback function, that would change Bisdir value self.ftp.retrlines (' LIST ', self.show) return SELF.BISDI R 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!"
  
 

Hopefully this article will help you with Python programming.

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