text: """
  INFORM with custom ContextName
  ++++++++++++++++++++++++++++++
  
  Send SNMP notification using the following options:
  
  * SNMPv3
  * with user 'usr-md5-none', MD5 auth, no priv
  * send INFORM notification
  * in behalf of contextEngineId = SnmpEngineId, contextName 'my-context'
  * over IPv4/UDP
  * with TRAP ID 'warmStart' specified as a string OID
  
  Sending SNMPv3 Notification in behalf of non-default ContextName
  requires having a collection of Managed Objects registered under
  the ContextName being used.
  
  Functionally similar to:
  
  | $ snmpinform -v3 -l authNoPriv -u usr-md5-none -A authkey1 -n my-context demo.snmplabs.com 12345 0.3.6.1.6.3.1.1.5.2
  
  """#
  from pysnmp.hlapi import *
  
  iterator = sendNotification(
      SnmpEngine(),
      UsmUserData('usr-md5-none', 'authkey1'),
      UdpTransportTarget(('demo.snmplabs.com', 162)),
      ContextData(contextName='my-context'),
      'inform',
      NotificationType(ObjectIdentity('1.3.6.1.6.3.1.1.5.2')).loadMibs('SNMPv2-MIB')
  )
  
  errorIndication, errorStatus, errorIndex, varBinds = next(iterator)
  
  if errorIndication:
      print(errorIndication)
  
  elif errorStatus:
      print('%s at %s' % (errorStatus.prettyPrint(),
                          errorIndex and varBinds[int(errorIndex) - 1][0] or '?'))
  
  else:
      for varBind in varBinds:
          print(' = '.join([x.prettyPrint() for x in varBind]))
  