requests.post(url, verify=_certfile, proxies=proxies) #tried #failed to verify certificate

urllib2.urlopen(url, data=data, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
        cafile=None, capath=None, cadefault=False, context=context)  #tried #failed to verify certificate

import httplib2

http = httplib2.Http(disable_ssl_certificate_validation=True)
headers, content = http.request(url, "POST", body=data, headers=headers)#tried #failed to verify certificate

httplib.HTTPSConnection(host='10.201.41.50', port=8018, key_file=key_file, cert_file=cert_file, strict=None, context=context) #tried #failed to verify certificate

ssl_cxt = SSL.Context(SSL.SSLv23_METHOD)
...
...
ssl_cxt.set_verify(SSL.VERIFY_PEER | SSL.VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb)
paste.httpserver.serve(app, host=IP, port=PORT, server_version=" ", ssl_context=ssl_cxt)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "ContinuumAnaconda2libsite-packagesrequestsapi.py", line 70, in get
return request('get', url, params=params, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestsapi.py", line 56, in request
return session.request(method=method, url=url, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestssessions.py", line 475, in request
resp = self.send(prep, **send_kwargs)
File "ContinuumAnaconda2libsite-packagesrequestssessions.py", line 596, in send
r = adapter.send(request, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestsadapters.py", line 497, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: unknown error (_ssl.c:2947)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "ContinuumAnaconda2libsite-packagesrequestsapi.py", line 70, in get
return request('get', url, params=params, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestsapi.py", line 56, in request
return session.request(method=method, url=url, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestssessions.py", line 475, in request
resp = self.send(prep, **send_kwargs)
File "ContinuumAnaconda2libsite-packagesrequestssessions.py", line 596, in send
r = adapter.send(request, **kwargs)
File "ContinuumAnaconda2libsite-packagesrequestsadapters.py", line 497, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate
verify failed (_ssl.c:661)