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I was trying out this article.

It seems that while making prediction, keras fails to download json because of corporate proxy at line:

results = imagenet_utils.decode_predictions(preds)

The error is as follows:

Using TensorFlow backend.

* Loading Keras model and Flask starting server...please wait until server has fully started

2018-11-21 17:47:27.664222: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2

 * Serving Flask app "run_keras_server" (lazy loading)

 * Environment: production

   WARNING: Do not use the development server in a production environment.

   Use a production WSGI server instead.

 * Debug mode: off

 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Downloading data from https://s3.amazonaws.com/deep-learning-models/image-models/imagenet_class_index.json

[2018-11-21 19:04:25,054] ERROR in app: Exception on /predict [POST]

Traceback (most recent call last):

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 1318, in do_open

    encode_chunked=req.has_header('Transfer-encoding'))

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 1239, in request

    self._send_request(method, url, body, headers, encode_chunked)

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 1285, in _send_request

    self.endheaders(body, encode_chunked=encode_chunked)

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 1234, in endheaders

    self._send_output(message_body, encode_chunked=encode_chunked)

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 1026, in _send_output

    self.send(msg)

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 964, in send

    self.connect()

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 1392, in connect

    super().connect()

  File "D:user123Programspythonpython-3.6.6-amd64libhttpclient.py", line 936, in connect

    (self.host,self.port), self.timeout, self.source_address)

  File "D:user123Programspythonpython-3.6.6-amd64libsocket.py", line 724, in create_connection

    raise err

  File "D:user123Programspythonpython-3.6.6-amd64libsocket.py", line 713, in create_connection

    sock.connect(sa)

TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packageskerasutilsdata_utils.py", line 222, in get_file

    urlretrieve(origin, fpath, dl_progress)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 248, in urlretrieve

    with contextlib.closing(urlopen(url, data)) as fp:

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 223, in urlopen

    return opener.open(url, data, timeout)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 526, in open

    response = self._open(req, data)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 544, in _open

    '_open', req)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 504, in _call_chain

    result = func(*args)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 1361, in https_open

    context=self._context, check_hostname=self._check_hostname)

  File "D:user123Programspythonpython-3.6.6-amd64liburllibrequest.py", line 1320, in do_open

    raise URLError(err)

urllib.error.URLError: <urlopen error [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond>



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflaskapp.py", line 2292, in wsgi_app

    response = self.full_dispatch_request()

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflaskapp.py", line 1815, in full_dispatch_request

    rv = self.handle_user_exception(e)

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflaskapp.py", line 1718, in handle_user_exception

    reraise(exc_type, exc_value, tb)

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflask_compat.py", line 35, in reraise

    raise value

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflaskapp.py", line 1813, in full_dispatch_request

    rv = self.dispatch_request()

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packagesflaskapp.py", line 1799, in dispatch_request

    return self.view_functions[rule.endpoint](**req.view_args)

  File "D:Maheshworkspacesignioworkspace6keras_flaskrun_keras_server.py", line 64, in predict

    results = imagenet_utils.decode_predictions(preds)

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packageskerasapplications__init__.py", line 28, in wrapper

    return base_fun(*args, **kwargs)

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packageskerasapplicationsimagenet_utils.py", line 14, in decode_predictions

    *args, **kwargs)

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packageskeras_applicationsimagenet_utils.py", line 228, in decode_predictions

    file_hash='c2c37ea517e94d9795004a39431a14cb')

  File "D:user123Programspythonpython-3.6.6-amd64libsite-packageskerasutilsdata_utils.py", line 226, in get_file

    raise Exception(error_msg.format(origin, e.errno, e.reason))

Exception: URL fetch failure on https://s3.amazonaws.com/deep-learning-models/image-models/imagenet_class_index.json: None -- [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

127.0.0.1 - - [21/Nov/2018 19:04:25] "[1m[35mPOST /predict HTTP/1.1[0m" 500 -

How can I set proxy for keras to let it download the desired file? Is there anyway I can manually download this file and make keras use it from filesystem location. Similar error occurred while downloading resnet50_weights_tf_dim_ordering_tf_kernels.h5. So, I manually downloaded it and specified it in the ResNet50().