From 7abf7cbafefce5483a507f90ee85cc6730373f07 Mon Sep 17 00:00:00 2001
From: elie <elie>
Date: Wed, 16 Sep 2015 20:10:22 +0000
Subject: Sphinxed

---
 pysnmp/entity/engine.py | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/pysnmp/entity/engine.py b/pysnmp/entity/engine.py
index d663d91..a15194d 100644
--- a/pysnmp/entity/engine.py
+++ b/pysnmp/entity/engine.py
@@ -15,6 +15,34 @@ from pysnmp import debug
 from pysnmp import error
 
 class SnmpEngine:
+    """Creates SNMP engine object.
+   
+    SNMP engine object is central in SNMP v3 architecture. It is an umbrella
+    object that coordinates interactions between all parts of SNMP v3 system.
+    See :RFC:`3412#section-2.1` (where it is termed *The Dispatcher*).
+
+    With PySNMP design, `SnmpEngine` is the only stateful object, all SNMP
+    v3 operations require an instance of SNMP engine.
+    
+    It is possible to run multiple instances of `SnmpEngine` in the
+    application. In a multithreaded environment, each thread that
+    works with SNMP must have its own `SnmpEngine` instance.
+
+    Parameters
+    ----------
+    snmpEngineID : :py:class:`~pysnmp.proto.rfc1902.OctetString`
+        Unique and unambiguous identifier of an SNMP engine. 
+        If not given, `snmpEngineID` is autogenerated and stored on
+        the filesystem. See :RFC:`3411#section-3.1.1`  for details.
+
+    Examples
+    --------
+    >>> from pysnmp.entity.engine import SnmpEngine
+    >>> SnmpEngine()
+    SnmpEngine(snmpEngineID=OctetString(hexValue='0x80004fb80567726f6d6d69742'))
+    >>>
+
+    """
     def __init__(self, snmpEngineID=None, maxMessageSize=65507,
                  msgAndPduDsp=None):
         self.cache = {}
@@ -97,6 +125,10 @@ class SnmpEngine:
             else:
                 debug.logger & debug.flagApp and debug.logger('SnmpEngine: stored SNMP Engine Boots: %s' % snmpEngineBoots.syntax.prettyPrint())
 
+    def __repr__(self):
+        return '%s(snmpEngineID=%r)' % \
+            (self.__class__.__name__, self.snmpEngineID)
+
     # Transport dispatcher bindings
     
     def __receiveMessageCbFun(
-- 
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