python - Graphlab get_dependencies() SSL 证书验证失败

Question

我在让 graphlab 工作时遇到了一些问题。每次我想导入 graphlab 时，我都会收到消息:

ACTION REQUIRED: Dependencies libstdc++-6.dll and libgcc_s_seh-1.dll not found.

1. Ensure user account has write permission to C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\site-packages\graphlab
2. Run graphlab.get_dependencies() to download and install them.
3. Restart Python and import graphlab again.

By running the above function, you agree to the following licenses.

* libstdc++: https://gcc.gnu.org/onlinedocs/libstdc++/manual/license.html
* xz: http://git.tukaani.org/?p=xz.git;a=blob;f=COPYING

在这条消息之后我执行:graphlab.get_dependencies() 并得到以下消息:

Downloading xz.

---------------------------------------------------------------------------
IOError                                   Traceback (most recent call last)
<ipython-input-2-9e64085fb919> in <module>()
----> 1 graphlab.get_dependencies()

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\site-packages\graphlab\dependencies.pyc in get_dependencies()
     31 
     32     print('Downloading xz.')
---> 33     (xzarchive_file, xzheaders) = urllib.urlretrieve('http://tukaani.org/xz/xz-5.2.1-windows.zip')
     34     xzarchive_dir = tempfile.mkdtemp()
     35     print('Extracting xz.')

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in urlretrieve(url, filename, reporthook, data, context)
     96     else:
     97         opener = _urlopener
---> 98     return opener.retrieve(url, filename, reporthook, data)
     99 def urlcleanup():
    100     if _urlopener:

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in retrieve(self, url, filename, reporthook, data)
    243             except IOError:
    244                 pass
--> 245         fp = self.open(url, data)
    246         try:
    247             headers = fp.info()

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in open(self, fullurl, data)
    211         try:
    212             if data is None:
--> 213                 return getattr(self, name)(url)
    214             else:
    215                 return getattr(self, name)(url, data)

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in open_http(self, url, data)
    362         else:
    363             if data is None:
--> 364                 return self.http_error(url, fp, errcode, errmsg, headers)
    365             else:
    366                 return self.http_error(url, fp, errcode, errmsg, headers, data)

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in http_error(self, url, fp, errcode, errmsg, headers, data)
    375             method = getattr(self, name)
    376             if data is None:
--> 377                 result = method(url, fp, errcode, errmsg, headers)
    378             else:
    379                 result = method(url, fp, errcode, errmsg, headers, data)

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in http_error_301(self, url, fp, errcode, errmsg, headers, data)
    669     def http_error_301(self, url, fp, errcode, errmsg, headers, data=None):
    670         """Error 301 -- also relocated (permanently)."""
--> 671         return self.http_error_302(url, fp, errcode, errmsg, headers, data)
    672 
    673     def http_error_303(self, url, fp, errcode, errmsg, headers, data=None):

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in http_error_302(self, url, fp, errcode, errmsg, headers, data)
    639                         "Internal Server Error: Redirect Recursion", headers)
    640         result = self.redirect_internal(url, fp, errcode, errmsg, headers,
--> 641                                         data)
    642         self.tries = 0
    643         return result

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in redirect_internal(self, url, fp, errcode, errmsg, headers, data)
    665                           headers)
    666 
--> 667         return self.open(newurl)
    668 
    669     def http_error_301(self, url, fp, errcode, errmsg, headers, data=None):

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in open(self, fullurl, data)
    211         try:
    212             if data is None:
--> 213                 return getattr(self, name)(url)
    214             else:
    215                 return getattr(self, name)(url, data)

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\urllib.pyc in open_https(self, url, data)
    441             if realhost: h.putheader('Host', realhost)
    442             for args in self.addheaders: h.putheader(*args)
--> 443             h.endheaders(data)
    444             errcode, errmsg, headers = h.getreply()
    445             fp = h.getfile()

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\httplib.pyc in endheaders(self, message_body)
   1051         else:
   1052             raise CannotSendHeader()
-> 1053         self._send_output(message_body)
   1054 
   1055     def request(self, method, url, body=None, headers={}):

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\httplib.pyc in _send_output(self, message_body)
    895             msg += message_body
    896             message_body = None
--> 897         self.send(msg)
    898         if message_body is not None:
    899             #message_body was not a string (i.e. it is a file) and

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\httplib.pyc in send(self, data)
    857         if self.sock is None:
    858             if self.auto_open:
--> 859                 self.connect()
    860             else:
    861                 raise NotConnected()

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\httplib.pyc in connect(self)
   1276 
   1277             self.sock = self._context.wrap_socket(self.sock,
-> 1278                                                   server_hostname=server_hostname)
   1279 
   1280     __all__.append("HTTPSConnection")

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\ssl.pyc in wrap_socket(self, sock, server_side, do_handshake_on_connect, suppress_ragged_eofs, server_hostname)
    350                          suppress_ragged_eofs=suppress_ragged_eofs,
    351                          server_hostname=server_hostname,
--> 352                          _context=self)
    353 
    354     def set_npn_protocols(self, npn_protocols):

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\ssl.pyc in __init__(self, sock, keyfile, certfile, server_side, cert_reqs, ssl_version, ca_certs, do_handshake_on_connect, family, type, proto, fileno, suppress_ragged_eofs, npn_protocols, ciphers, server_hostname, _context)
    577                         # non-blocking
    578                         raise ValueError("do_handshake_on_connect should not be specified for non-blocking sockets")
--> 579                     self.do_handshake()
    580 
    581             except (OSError, ValueError):

C:\Users\Lorenzpc\Desktop\cousera\anaconda installation\Anaconda2\envs\gl-env\lib\ssl.pyc in do_handshake(self, block)
    806             if timeout == 0.0 and block:
    807                 self.settimeout(None)
--> 808             self._sslobj.do_handshake()
    809         finally:
    810             self.settimeout(timeout)

IOError: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)

我以前在这里搜索过，但没有一个问题是相同的，或者建议的解决方案不起作用。我曾尝试在不同的地方多次重新安装 anconda 和 graphlab(我认为这可能与写入权限有关)，这两次都是使用安装程序手动使用 pip。我试图手动提取文件(此处建议的解决方案:Graphlab Create setup error: graphlab.get_dependencies() results in BadZipFile error)。我还尝试更改导致 dependencies.py 错误的代码行，以便它只查找我 PC 上的文件(来自其他论坛的建议)。但无论我做什么，我都无法让它发挥作用。

据我了解，该错误似乎是由连接失败或无法设置 SSL 连接引起的。但我没有使用代理，也没有启用防火墙。

对于此问题的原因/解决方案的任何建议将不胜感激，我已经为此伤脑筋了一段时间。

Answer 1

我遇到了一个非常相似的 SSL 相关错误。 “猴子修补”ssl 模块，如 https://github.com/mtschirs/quizduellapi/issues/2 中所建议的那样，解决了那个问题。请尝试在 执行 graphlab.get_dependencies() 之前执行以下语句:

import ssl
if hasattr(ssl, '_create_unverified_context'):
    ssl._create_default_https_context = ssl._create_unverified_context

希望这会解锁您的 graphlab 设置。