when do copy a file using paramiko sftp.put(parent_dir + '/' + filename, dest_dir + '/' + filename), IOError(text) occurred

[dharmaece]

File "C:\Python27\Wrkout\16082016\commnmthdclass.py", line 348, in copy_file
sftp.put(parent_dir + '/' + filename, dest_dir + '/' + filename)
File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 676, in put

return self.putfo(fl, remotepath, file_size, callback, confirm)

File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 637, in put
fo
reader=fl, writer=fr, file_size=file_size, callback=callback
File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 599, in _tr
ansfer_with_callback
writer.write(data)
File "C:\Python27\lib\site-packages\paramiko\file.py", line 381, in write
self._write_all(data)
File "C:\Python27\lib\site-packages\paramiko\file.py", line 498, in _write_all
count = self._write(data)
File "C:\Python27\lib\site-packages\paramiko\sftp_file.py", line 180, in _writ
e
t, msg = self.sftp._read_response(req)
File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 781, in _re
ad_response
self._convert_status(msg)
File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 811, in _co
nvert_status
raise IOError(text)
IOError: Failure

[nolaskito123]

import os
local_path = os.path.join(parent_dir, filename)
remote_path = os.path.join(dest_dir, filename)
sftp.put(local_path, remote_path)