IOError: [Errno ftp error] proxy support for ftp protocol currently not implemented

[sowmyakavali]

while runnning demo.py --input_image ./test1.jpg

its throwing this error

Traceback (most recent call last):

  File "demo.py", line 228, in <module>
    tf.app.run()
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/platform/app.py", line 48, in run
    _sys.exit(main(_sys.argv[:1] + flags_passthrough))
  File "demo.py", line 125, in main
    maybe_download_and_extract(runs_dir)
  File "demo.py", line 88, in maybe_download_and_extract
    download_name = tv_utils.download(weights_url, runs_dir)
  File "incl/tensorvision/utils.py", line 48, in download
    reporthook=_progress)
  File "/usr/lib/python2.7/urllib.py", line 98, in urlretrieve
    return opener.retrieve(url, filename, reporthook, data)
  File "/usr/lib/python2.7/urllib.py", line 247, in retrieve
    fp = self.open(url, data)
  File "/usr/lib/python2.7/urllib.py", line 215, in open
    return getattr(self, name)(url)
  File "/usr/lib/python2.7/urllib.py", line 513, in open_ftp
    raise IOError, ('ftp error', 'proxy support for ftp protocol currently not implemented')
IOError: [Errno ftp error] proxy support for ftp protocol currently not implemented

How to solve this?