python ftp 下载所有文件到本地 脚本

!/bin/env python

import os, sys, ftplib from getpass import getpass from mimetypes import guess_type

nonpassive = False # passive FTP on by default in 2.1+ remotesite = 'home.rmi.net' # download from this site remotedir = '.' # and this dir (e.g., public_html) remoteuser = 'lutz' remotepass = getpass('Password for %s on %s: ' % (remoteuser, remotesite)) localdir = (len(sys.argv) > 1 and sys.argv[1]) or '.' cleanall = input('Clean local directory first? ')[:1] in ['y', 'Y']

print('connecting...') connection = ftplib.FTP(remotesite) # connect to FTP site connection.login(remoteuser, remotepass) # login as user/password connection.cwd(remotedir) # cd to directory to copy if nonpassive: # force active mode FTP connection.set_pasv(False) # most servers do passive

if cleanall: for localname in os.listdir(localdir): # try to delete all locals try: # first, to remove old files print('deleting local', localname) # os.listdir omits . and .. os.remove(os.path.join(localdir, localname)) except: print('cannot delete local', localname)

count = 0 # download all remote files remotefiles = connection.nlst() # nlst() gives files list # dir() gives full details for remotename in remotefiles: if remotename in ('.', '..'): continue # some servers include . and .. mimetype, encoding = guess_type(remotename) # e.g., ('text/plain', 'gzip') mimetype = mimetype or '?/?' # may be (None, None) maintype = mimetype.split('/')[0] # .jpg ('image/jpeg', None')

localpath = os.path.join(localdir, remotename)
print('downloading', remotename, 'to', localpath, end=' ')
print('as', maintype, encoding or '')

if maintype == 'text' and encoding == None:
    # use ascii mode xfer and text file 
    # use encoding compatible wth ftplib's
    localfile = open(localpath, 'w', encoding=connection.encoding)
    callback  = lambda line: localfile.write(line + '\n')
    connection.retrlines('RETR ' + remotename, callback)

else:
    # use binary mode xfer and bytes file
    localfile = open(localpath, 'wb')
    connection.retrbinary('RETR ' + remotename, localfile.write)

localfile.close()
count += 1

connection.quit() print('Done:', count, 'files downloaded.')