1 files changed, 33 insertions, 10 deletions
diff --git a/pysnmp/smi/mibs/instances/__SNMP-FRAMEWORK-MIB.py b/pysnmp/smi/mibs/instances/__SNMP-FRAMEWORK-MIB.py
index cfbcb9ff..07a06c70 100644
--- a/pysnmp/smi/mibs/instances/__SNMP-FRAMEWORK-MIB.py
+++ b/pysnmp/smi/mibs/instances/__SNMP-FRAMEWORK-MIB.py
@@ -4,9 +4,21 @@
 # Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
 # License: http://snmplabs.com/pysnmp/license.html
 #
+# This file instantiates some of the MIB managed objects for SNMP engine use
+#
+
 import time
 
-MibScalarInstance, = mibBuilder.importSymbols('SNMPv2-SMI', 'MibScalarInstance')
+if 'mibBuilder' not in globals():
+    import sys
+
+    sys.stderr.write(__doc__)
+    sys.exit(1)
+
+MibScalarInstance, = mibBuilder.importSymbols(
+    'SNMPv2-SMI',
+    'MibScalarInstance'
+)
 
 (snmpEngineID,
  snmpEngineBoots,
@@ -19,16 +31,27 @@ MibScalarInstance, = mibBuilder.importSymbols('SNMPv2-SMI', 'MibScalarInstance')
     'snmpEngineMaxMessageSize'
 )
 
-__snmpEngineID = MibScalarInstance(snmpEngineID.name, (0,), snmpEngineID.syntax)
-__snmpEngineBoots = MibScalarInstance(snmpEngineBoots.name, (0,), snmpEngineBoots.syntax.clone(1))
-__snmpEngineTime = MibScalarInstance(snmpEngineTime.name, (0,), snmpEngineTime.syntax.clone(int(time.time())))
-__snmpEngineMaxMessageSize = MibScalarInstance(snmpEngineMaxMessageSize.name, (0,),
-                                               snmpEngineMaxMessageSize.syntax.clone(4096))
+_snmpEngineID = MibScalarInstance(
+    snmpEngineID.name, (0,),
+    snmpEngineID.syntax
+)
+_snmpEngineBoots = MibScalarInstance(
+    snmpEngineBoots.name, (0,),
+    snmpEngineBoots.syntax.clone(1)
+)
+_snmpEngineTime = MibScalarInstance(
+    snmpEngineTime.name, (0,),
+    snmpEngineTime.syntax.clone(int(time.time()))
+)
+_snmpEngineMaxMessageSize = MibScalarInstance(
+    snmpEngineMaxMessageSize.name, (0,),
+    snmpEngineMaxMessageSize.syntax.clone(4096)
+)
 
 mibBuilder.exportSymbols(
     '__SNMP-FRAMEWORK-MIB',
-    snmpEngineID=__snmpEngineID,
-    snmpEngineBoots=__snmpEngineBoots,
-    snmpEngineTime=__snmpEngineTime,
-    snmpEngineMaxMessageSize=__snmpEngineMaxMessageSize
+    snmpEngineID=_snmpEngineID,
+    snmpEngineBoots=_snmpEngineBoots,
+    snmpEngineTime=_snmpEngineTime,
+    snmpEngineMaxMessageSize=_snmpEngineMaxMessageSize
 )