Issues with SSL Certification in Tensorflow using Python

I'm having trouble downloading the MNIST data using tensorflow.examples.tutorials.mnist.input_data.read_data_sets(). This function is supposed to send a request to the server to download approximately 1.5GB of data.

However, I keep encountering an error with the SSL certificate that Python is using, as shown in this traceback:

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:748)

I attempted installing certifications manually by running "Install Certifactions.command" from /Applications/Python 3.6/, but encountered another error related to permissions:

Traceback (most recent call last):   File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/shutil.py",
line 544, in move
    os.rename(src, real_dst) PermissionError: [Errno 13] Permission denied:
'/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/certifi-2015.04.28.dist-info/DESCRIPTION.rst'
-'/var/folders/mq/g_jy_1qx1vjdb3xmdh7y62y80000gn/T/pip-3m8ixnf5-uninstall/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/certifi-2015.04.28.dist-info/DESCRIPTION.rst'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):   File
"/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/basecommand.py",
line 215, in main
    status = self.run(options, args)   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/commands/install.py",
line 342, in run
    prefix=options.prefix_path,   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/req/req_set.py",
line 778, in install
    requirement.uninstall(auto_confirm=True)   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/req/req_install.py",
line 754, in uninstall
    paths_to_remove.remove(auto_confirm)   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/req/req_uninstall.py",
line 115, in remove
    renames(path, new_path)   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pip/utils/__init__.py",
line 267, in renames
    shutil.move(old, new)   File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/shutil.py",
line 559, in move
    os.unlink(src) PermissionError: [Errno 13] Permission denied: '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/certifi-2015.04.28.dist-info/DESCRIPTION.rst'

I suspect there may be issues with my filesystem permissions even though I recently reinstalled OSX on this computer. Is there a way to manually install certificates or download the data from a non-https address?

pythonssltensorflowdownloadmnist

Answer №1

To set up the necessary certificates, you can either double-click on the file located in 

/Applications/Python 3.6/Install Certificates.command
if you are using macOS, or execute the following command in a bash terminal:

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

Once this is done, you will have the required certificates installed and be able to download data securely over HTTPS.

For more information, check out the specific thread on TensorFlow GitHub regarding official models.

Answer №2

By changing https to http, I successfully managed to get it up and running.

To fix the issue in contrib/learn/python/learn/datasets/mnist.py, simply adjust the line containing SOURCE_URL=''.

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