python 2.7 - Using OS.walk and paramiko to move files to ftp server causing EOFError? -

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my goal walk through files in folder (and subfolders), check whether file exists on ftp. if file doesn't exist, put in in destination folder , if exist, archive old file using rename , put new file in it's place. code far follows.

path = 'z:\\_magento images\\2014\\jun2014\\09jun2014' ssh = paramiko.sshclient()   log_file = 'c:\\temp\\log.txt' paramiko.util.log_to_file(log_file)     ssh.set_missing_host_key_policy(paramiko.autoaddpolicy())    def upload_images():         #' #in case server's key unknown,'     #we adding automatically list of known hosts      #ssh.load_host_keys(os.path.expanduser(os.path.join("~", ".ssh", "known_hosts")))         #loads user's local known host file       ssh.connect('xxxxxxxxxxxxx', port=22,     username='xxxxxxxx', password='xxxxxxxxx')      ssh_stdin, ssh_stdout, ssh_stderr = ssh.exec_command('ls /tmp')      print "output", ssh_stdout.read() #reading output of executed co'mmand  error = ssh_stderr.read()        #reading error stream of executed command     print "err", error, len(error)       #transfering files , remote machine'      sftp = ssh.open_sftp()        #'sftp.get(remote_path, local_path)'       root, dirs, files in os.walk(path):         fn in files:             ftp_path = '/productimages/' + fn             archive = '/productimages/archive/' + fn             source = root + '\\' + fn             try:                 sftp.stat(ftp_path)             except ioerror e:                 print e.errno                 print errno.enoent                 if e.errno == errno.enoent:                     print 'this if'                     sftp.put(source, ftp_path)              else:                 print 'this else'                 sftp.rename(ftp_path,archive)                 sftp.put(root + '\\' + fn, ftp_path)              finally:                 sftp.close()                 ssh.close()              #update_log()

what happens. if file doesn't exist eoferror. i'll have set conditions situation if file archived cross bridge when it. being thick , can't tease out issues. thoughts appreciated.

the eoferror occurs because of misplaced finally clause: sftp , ssh closed after first processed file.

the second problem sftp.rename(ftp_path,archive) fail if archive file exists.

the partially fixed upload_images() may this:

def upload_images():      # code skipped       def rexists(path):         try:             sftp.stat(path)         except ioerror e:             if e.errno == errno.enoent:                 return false             raise         return true      try:         root, dirs, files in os.walk(path):             fn in files:                 print 'fn', fn                 ftp_path = '/nethome/auto.tester/tmp/productimages/' + fn                 archive = '/nethome/auto.tester/tmp/productimages/archive/' + fn                 source = root + '\\' + fn                 if not rexists(ftp_path):                     sftp.put(source, ftp_path)                 else:                     if rexists(archive):                         sftp.remove(archive)                     sftp.rename(ftp_path, archive)                     sftp.put(root + '\\' + fn, ftp_path)      finally:         sftp.close()         ssh.close()

however still fails if path contains sub-directories files.


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