FTP file module in python

Python installed by default ftplib module defines the FTP class , wherein the function is limited, may be used to achieve a simple ftp client, for uploading or downloading files, functions listed below

Log ftp connections
 from ftplib Import the FTP             # load modules ftp 
ftp = the FTP ()                          # set the variable 
ftp.set_debuglevel (2)              # open the debug level 2, the detailed information 
ftp.connect ( " IP " , " Port " )           # connection ftp sever and port 
ftp.login ( " the user " , " password " )       # username connection, password 
Print ftp.getwelcome ()             # prints out a welcome message 
ftp.cmd ( " xxx / xxx ")                 # To enter the remote directory 
bufsize = 1024                       # Set the buffer size 
filename = " filename.txt "            # file to be downloaded 
file_handle = Open (filename, " wb " ) .write # to write mode opens the file in the local 
ftp.retrbinaly ( " RETR filename.txt " , file_handle, bufsize) # on the receiving server file and write local files 
ftp.set_debuglevel (0)              # turn off debugging mode 
ftp.quit ()                         # exit the FTP 
 
the FTP commands related to the operation 
ftp.cwd (pathname)                  # set current path of the FTP operation
ftp.dir ()                          # display all directory information in the directory 
ftp.nlst ()                         # files in the directory to obtain 
ftp.mkd (pathname)                  # Create remote directory 
ftp.pwd ()                          # returns the current location 
ftp.rmd (dirname)                   # delete remote directory 
ftp.delete (filename)               # delete remote files 
ftp.rename (fromname, ToName) # the fromname change the name to toname. 
ftp.storbinaly ( " STOR filename.txt " , file_handel, bufsize)   # upload target file 
ftp.retrbinary ( " RETR filename.txt ", file_handel, bufsize)   # download FTP file

Difference FTP.quit () and FTP.close () of

FTP.quit (): QUIT command and closes off the connection to the server. This is a "detente" close connection, but if the server returns an error to the QUIT command will throw an exception.
After closing off the unilateral connection should not be used after a connection has been closed, for example, is not applied in FTP.quit (): FTP.close ()

# coding: utf-8
from ftplib import FTP
import time
import tarfile
import os
# !/usr/bin/python
# -*- coding: utf-8 -*-

from ftplib import FTP

def ftpconnect(host, username, password):
    ftp = FTP()
    # ftp.set_debuglevel(2)
    ftp.connect(host, 21)
    ftp.login(username, password)
    return ftp

#从ftp下载文件
def downloadfile(ftp, remotepath, localpath):
    bufsize = 1024
    fp = open(localpath, 'wb')
    ftp.retrbinary('RETR ' + remotepath, fp.write, bufsize)
    ftp.set_debuglevel(0)
    fp.close()

#从本地上传文件到ftp
def uploadfile(ftp, remotepath, localpath):
    bufsize = 1024
    fp = open(localpath, 'rb')
    ftp.storbinary('STOR ' + remotepath, fp, bufsize)
    ftp.set_debuglevel(0)
    fp.close()

if __name__ == "__main__":
    ftp = ftpconnect("113.105.139.xxx", "ftp***", "Guest***")
    downloadfile(ftp, "Faint.mp4", "C:/Users/Administrator/Desktop/test.mp4")
    #调用本地播放器播放下载的视频
    os.system('start "C:\Program Files\Windows Media Player\wmplayer.exe" "C:/Users/Administrator/Desktop/test.mp4"')
    uploadfile(ftp, "C:/Users/Administrator/Desktop/test.mp4", "test.mp4")

    ftp.quit()

FTP file module in python

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