Re: [pysnmp-users] extracting values from responses

[Ilya E. <il...@gl...>]

Hi Andrew,

To answer your exact question -- you need to pick up the value at the
callback function and pass it up to the caller (via a global variable or
better mutable stack variable).

BUT! Do not do that!

You are using a very old pysnmp API! Better use the modern one -- it's
way better:

   
http://pysnmp.sourceforge.net/examples/hlapi/asyncore/sync/manager/cmdgen/snmp-versions.html#snmpv3-auth-md5-privacy-des


On 09/11/2017 05:37 PM, Andrew Gallo wrote:
> Greetings:
>
> Using pysnmp 4.3.9 on python 2.7.  I'm following the SNMPv3 example at
>
>> http://pysnmp.sourceforge.net/examples/current/v3arch/manager/cmdgen/get-v3.html
>>
>
>
> How do I assign the returned value to a variable?
> When I issue a command like:
> rtnval = snmpEngine.transportDispatcher.runDispatcher()
> 1.3.6.1.4.1.10002.2.30.1.1.1.3.16793610.1.1 = -100
>
> But, rtnval  is empty:
> >>> type(rtnval)
> <type 'NoneType'>
>
> Is there anyway to extract the value (in this case -100)?
>
> Thank you.
>
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