Mac OSでテンソルフローのmnistをロードする際の問題

Question

Tensorflowを使用してMNISTデータセットをダウンロードしようとしているときに、次のエラーが発生しました。上記の例外の取り扱い中

Using TensorFlow backend. 
Downloading data from https://s3.amazonaws.com/img-datasets/mnist.npz 
Traceback (most recent call last): 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1318, in do_open 
    encode_chunked=req.has_header('Transfer-encoding')) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1239, in request 
    self._send_request(method, url, body, headers, encode_chunked) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1285, in _send_request 
    self.endheaders(body, encode_chunked=encode_chunked) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1234, in endheaders 
    self._send_output(message_body, encode_chunked=encode_chunked) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1026, in _send_output 
    self.send(msg) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 964, in send 
    self.connect() 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1400, in connect 
    server_hostname=server_hostname) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 401, in wrap_socket 
    _context=self, _session=session) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 808, in __init__ 
    self.do_handshake() 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 1061, in do_handshake 
    self._sslobj.do_handshake() 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 683, in do_handshake 
    self._sslobj.do_handshake() 
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749) 

は、別の例外が発生しました：

Traceback (most recent call last): 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/keras/utils/data_utils.py", line 207, in get_file 
    urlretrieve(origin, fpath, dl_progress) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 248, in urlretrieve 
    with contextlib.closing(urlopen(url, data)) as fp: 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 223, in urlopen 
    return opener.open(url, data, timeout) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 526, in open 
    response = self._open(req, data) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 544, in _open 
    '_open', req) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 504, in _call_chain 
    result = func(*args) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1361, in https_open 
    context=self._context, check_hostname=self._check_hostname) 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1320, in do_open 
    raise URLError(err) 
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)> 

上記例外の取り扱い中に、別の例外が発生しました：

Traceback (most recent call last): 
    File "/Users/lorin/Applications/miniconda3/envs/udemy/mnist_keras.py", line 13, in <module> 
    (X_train, y_train), (X_test, y_test) = mnist.load_data('/lib/python3.6/site-packages/keras/datasetsmnist.py') 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/keras/datasets/mnist.py", line 15, in load_data 
    path = get_file(path, origin='https://s3.amazonaws.com/img-datasets/mnist.npz') 
    File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/keras/utils/data_utils.py", line 209, in get_file 
    raise Exception(error_msg.format(origin, e.errno, e.reason)) 
Exception: URL fetch failure on https://s3.amazonaws.com/img-datasets/mnist.npz: None -- [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749) 

プロセスは終了コードで仕上げenter code here

Answer 1

TensorFlowを次のようにインストールすることをお勧めします。別のvirtualenv。

ここでは、次の手順に従ってください：Installing TensorFlow with virtualenv

And always remember to activate the virtualenv environment each time you use TensorFlow in a new shell by running:
$ source ~/<target_directory>/bin/activate

Answer 2

を、私は同じ問題を持っていた、と（https://github.com/tensorflow/tensorflow/issues/10779に示されているように）、以下のコマンドを助けた：あなたはするつもりだ

/Applications/Python\ 3.6/Install\ Certificates.command