2.4 利用FTP服务器下载和上传目录

利用FTP服务器下载目录

import os,sys

from ftplib import FTP

from mimetypes import guess_type

nonpassive = False                                                         #passive FTP by default

remotesite = '192.168.191.1'

remotedir = '.'                                                            #FTP的路径

remoteuser = ()                                                            #因为我没设置密码，所以为空集

localdir = '.'                                                             #本地路径

clean_all = input( 'Clean local directory first? ')[:1] in ['y','Y']       #是否清除本地目录所有文件

#连接PFTP

print('connecting...')

connection = FTP(remotesite)

connection.login(*remoteuser)

connection.cwd(remotedir)

if nonpassive:

    connection.set_pasv(False)                                             #most servers do passive

#清除

if clean_all:

    for localname in os.listdir(localdir):

        try:

            print('deleting local',localname)

            os.remove(os.path.join(remotedir,localname))

        except:

            print('cannot delete', localname)

count = 0

remotefiles = connection.nlst()

#只能下载目录中的文件，不能下载目录中的目录

for remotename in remotefiles[:5]:

    if remotename in ('.','..') or not '.' in remotename:continue             #判断是否目录，这里根据实际情况更改

    mimetype,encoding = guess_type(remotename)

    mimetype = mimetype or '?/?'

    mimetype = mimetype.split('/')[0]

    localpath = os.path.join(localdir,remotename)

    print('downing',remotename,'to',localpath,end=' ')

    print('as',mimetype,encoding or '')

    #保存文件

    if mimetype == 'text' and encoding == None:

        localfile = open(localpath,'w',encoding=connection.encoding)

        callback = lambda line: localfile.write(line + '\n')

        connection.retrlines('RETR '+remotename,callback)

    else:

        localfile = open(localpath,'wb')

        connection.retrbinary('RETR '+remotename,localfile.write)

    localfile.close()

    count += 1

connection.quit()

print('Done:',count,'file download.')

利用FTP服务器上传目录

import os,sys

from ftplib import FTP

from mimetypes import guess_type

nonpassive = False                                                         #passive FTP by default

remotesite = '192.168.191.1'

remotedir = 'RRR'                                                            #FTP的路径

remoteuser = ()                                                            #因为我没设置密码，所以为空集

localdir = 'TTT'                                                             #本地路径

clean_all = input( 'Clean local directory first? ')[:1] in ['y','Y']       #是否清除远程目录所有文件

#连接PFTP

print('connecting...')

connection = FTP(remotesite)

connection.login(*remoteuser)

connection.cwd(remotedir)

if nonpassive:

    connection.set_pasv(False)                                             #most servers do passive

#清除

if clean_all:

    for remotename in connection.nlst():

        try:

            print('deleting local',remotename)

            connection.delete(remotename)

        except:

            print('cannot delete', remotename)

count = 0

localfiles = os.listdir(localdir)

#只能下载目录中的文件，不能下载目录中的目录

for localname in localfiles[:5]:

    mimetype,encoding = guess_type(localname)

    mimetype = mimetype or '?/?'

    mimetype = mimetype.split('/')[0]

    localpath = os.path.join(localdir,localname)

    print('downing',localname,'to',localpath,end=' ')

    print('as',mimetype,encoding or '')

    #保存文件

    if mimetype == 'text' and encoding == None:

        localfile = open(localpath,'rb')

        connection.storlines('RETR '+localname,localfile)

    else:

        localfile = open(localpath,'rb')

        connection.storbinary('RETR '+localname,localfile)

    localfile.close()

    count += 1

connection.quit()

print('Done:',count,'file uploaded.')