Python implements simple FTP client using ftplib

This article describes how to use ftplib to implement a simple FTP client in Python. The example analyzes the settings and usage skills of the ftplib module, for more information about how to use ftplib to implement a simple FTP client, see the example in this article. Share it with you for your reference. The specific implementation method is as follows:

#! /Usr/bin/python #-*-coding: UTF-8-*-from ftplib import FTP # load ftp module ftp = FTP () # set the variable ftp. set_debuglevel (2) # enable debug level 2 and display the ftp details. connect ("IP", "port") # connect to the ftp server and port ftp. login ("user", "password") # connect to the user name and password print ftp. getwelcome () # print out the welcome information ftp. cmd ("xxx/xxx") # Change remote directory bufsize = 1024 # set the buffer size filename = "filename.txt" # file file_handle = open (filename, "wb "). write # Open the ftp file locally in write mode. retrbinaly ("RETR filename. t Xt ", file_handle, bufsize) # receives files from the server and writes them to the local file ftp. set_debuglevel (0) # Disable the debugging mode ftp. quit # exit ftp. dir () # display the file information in the directory ftp. mkd (pathname) # Create a remote directory ftp. pwd () # return the current ftp location. rmd (dirname) # Delete the remote directory ftp. delete (filename) # delete a remote file ftp. rename (fromname, toname) # Change fromname to toname. Ftp. storbinaly ("STOR filename.txt", file_handel, bufsize) # upload the target file

A complete FTP 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 = '21'): self. ftp. set_debuglevel (2) # enable debug level 2 and display details # self. ftp. set_pasv (0) #0 Active Mode 1 # passive mode 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 ', 'Oss \ runtime. log') # OK # ftp. upLoadFile ('runtime. log', 'Oss \ runtime . Log') # OK # ftp. downLoadFileTree ('bcd', 'Oss \ ABC') # OK # ftp. upLoadFileTree ('AAA', "others \") ftp. close () print "OK! "
 

I hope this article will help you with Python programming.