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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Connect(host='localhost', port=443, user='root', pwd='', service="hostd", adapter="SOAP", namespace=None, path="/sdk", connectionPoolTimeout=CONNECTION_POOL_IDLE_TIMEOUT_SEC, version=None, keyFile=None, certFile=None, thumbprint=None, sslContext=None, b64token=None, mechanism='userpass'):
 """ Connect to the specified server, login and return the service instance object. Throws any exception back to caller. The service instance object is also saved in the library for easy access. Clients should modify the service parameter only when connecting to a VMOMI server other than hostd/vpxd. For both of the latter, the default value is fine. @param host: Which host to connect to. @type host: string @param port: Port @type port: int @param user: User @type user: string @param pwd: Password @type pwd: string @param service: Service @type service: string @param adapter: Adapter @type adapter: string @param namespace: Namespace *** Deprecated: Use version instead *** @type namespace: string @param path: Path @type path: string @param connectionPoolTimeout: Timeout in secs for idle connections to close, specify negative numbers for never closing the connections @type connectionPoolTimeout: int @param version: Version @type version: string @param keyFile: ssl key file path @type keyFile: string @param certFile: ssl cert file path @type certFile: string @param thumbprint: host cert thumbprint @type thumbprint: string @param sslContext: SSL Context describing the various SSL options. It is only supported in Python 2.7.9 or higher. @type sslContext: SSL.Context @param b64token: base64 encoded token @type b64token: string @param mechanism: authentication mechanism: userpass or sspi @type mechanism: string """

   try:
      info = re.match(_rx, host)
      if info is not None:
         host = info.group(1)
         if host[0] == '[':
            host = info.group(1)[1:-1]
         if info.group(2) is not None:
            port = int(info.group(2)[1:])
   except ValueError as ve:
      pass

   sslContext = localSslFixup(host, sslContext)

   if namespace:
      assert(version is None)
      version = versionMap[namespace]
   elif not version:
      version = "vim.version.version6"

   si, stub = None, None
   if mechanism == 'userpass':
      si, stub = __Login(host, port, user, pwd, service, adapter, version, path,
                         keyFile, certFile, thumbprint, sslContext, connectionPoolTimeout)
   elif mechanism == 'sspi':
      si, stub = __LoginBySSPI(host, port, service, adapter, version, path,
                               keyFile, certFile, thumbprint, sslContext, b64token, connectionPoolTimeout)
   else:
      raise Exception('''The provided connection mechanism is not available, the
              supported mechanisms are userpass or sspi''')

   SetSi(si)

   return si