from pyVim import connect
    def connect_to_server(self, server=None, user=None, pwd=None, port=None):
    if server is None:
        server = _config_values("general", "host")
    if user is None:
        user = _config_values("general", "username")
    if pwd is None:
        pwd = _config_values("general", "password")
    if port is None:
        port = _config_values("general", "port")
    self._server = server
    self._user = user
    self._password = pwd
    self._port = int(port)
    try:
        service_instance = connect.SmartConnect("http", self._server,  self._port, self._user, self._password)
    except ConfigParseError:
        pass

import urllib3.contrib.pyopenssl
    urllib3.contrib.pyopenssl.inject_into_urllib3()

<pre><code>
Traceback (most recent call last):
File "D:python_learningvmwareATFtestVmwareatf.py", line 15, in <module>
main()
File "D:python_learningvmwareATFtestVmwareatf.py", line 12, in main
obj.connect_to_server()
File "D:python_learningvmwareATFvmwareatfvmware.py", line 52,in      connect_to_server
service_instance = connect.SmartConnect( host=self._server,    port=self._port,  user=self._user, pwd=self._password)
File "C:Python27libsite-packagespyVimconnect.py", line 577, in SmartConnect  preferredApiVersions)
File "C:Python27libsite-packagespyVimconnect.py", line 520, in  __FindSupportedVersion    path)
File "C:Python27libsite-packagespyVimconnect.py", line 435, in __GetServiceVersionDescription
sock = requests.get(url, verify=False)
File "C:Python27libsite-packagesrequestsapi.py", line 69, in get
return request('get', url, params=params, **kwargs)
File "C:Python27libsite-packagesrequestsapi.py", line 50, in request
response = session.request(method=method, url=url, **kwargs)
File "C:Python27libsite-packagesrequestssessions.py", line 465, in  request
resp = self.send(prep, **send_kwargs)
File "C:Python27libsite-packagesrequestssessions.py", line 573, in send
r = adapter.send(request, **kwargs)
File "C:Python27libsite-packagesrequestsadapters.py", line 431, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: [Errno bad handshake] (-1, 'Unexpected EOF')
</code></pre>

sslContext = ssl.create_default_context(purpose=ssl.Purpose.CLIENT_AUTH)
sslContext.verify_mode = ssl.CERT_NONE
si = SmartConnect(host=host,user=username,pwd=password,sslContext=sslContext)

ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed...

import requests
requests.packages.urllib3.disable_warnings()

import ssl

try:
    _create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
    # Legacy Python that doesn't verify HTTPS certificates by default
    pass
else:
     # Handle target environment that doesn't support HTTPS verification
    ssl._create_default_https_context = _create_unverified_https_context

sslContext = ssl.create_default_context()
sslContext.check_hostname = False
sslContext.verify_mode = ssl.CERT_NONE
si = SmartConnect(host=host,user=username,pwd=password,sslContext=sslContext)

#!/usr/bin/env python3.6
# encoding: utf-8

from pyVim import connect
import ssl


def login():
    ssl_context = ssl.create_default_context(purpose=ssl.Purpose.CLIENT_AUTH)
    ssl_context.verify_mode = ssl.CERT_NONE
    si = connect.SmartConnect(host='sclautoesxd12.engba.veritas.com', user='root', pwd='P@ssw0rd',
                              sslContext=ssl_context)
    print(si)
    print('nHello World!n')
    print('If you got here, you authenticted into vCenter.')


if __name__ == '__main__':
    login()