Re: [pysnmp-users] Notification Originator example fails (pysnmp 4.2.5 / Python 3.4)

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

Hello Marat,

That’s likely a bug. Could you please try the latest pysnmp (which works just fine to me with your code):

https://sourceforge.net/projects/pysnmp/files/pysnmp/4.2.6/

and alert me in case of further issues?

-ilya

> On 19 Feb 2015, at 12:51, Марат Рысбеков <mar...@gm...> wrote:
> 
> Hello,
> 
> I would like to use pysnmp 4.2.5 (installed via pip) to send SNMP traps. I tried running the following example (taken from http://pysnmp.sourceforge.net/examples/current/v3arch/oneliner/agent/ntforg/trap-v2c-with-mib-lookup.py <http://pysnmp.sourceforge.net/examples/current/v3arch/oneliner/agent/ntforg/trap-v2c-with-mib-lookup.py>):
> 
> ---
> from pysnmp.entity.rfc3413.oneliner import ntforg
> 
> ntfOrg = ntforg.NotificationOriginator()
> 
> errorIndication = ntfOrg.sendNotification(
>     ntforg.CommunityData('public'),
>     ntforg.UdpTransportTarget(('localhost', 162)),
>     'trap',
>     ntforg.MibVariable('SNMPv2-MIB', 'coldStart'),
>     ( ntforg.MibVariable('SNMPv2-MIB', 'sysName', 0), 'new name' )
> )
> 
> if errorIndication:
>     print('Notification not sent: %s' % errorIndication)
> ---
> 
> When I run it with Python 3.4.2 I get this:
> 
> ---
> Exception ignored in: <bound method AsynNotificationOriginator.__del__ of <pysnmp.entity.rfc3413.oneliner.ntforg.AsynNotificationOriginator object at 0x7fd0a07a4978>>
> Traceback (most recent call last):
>   File "/usr/local/lib/python3.4/site-packages/pysnmp/entity/rfc3413/oneliner/ntforg.py", line 33, in __del__
>     def __del__(self): self.uncfgNtfOrg()
>   File "/usr/local/lib/python3.4/site-packages/pysnmp/entity/rfc3413/oneliner/ntforg.py", line 100, in uncfgNtfOrg
>     for authDataKey in authDataKeys:
> RuntimeError: dictionary changed size during iteration
> ---
> 
> With Python 2.7.8 the example works just fine.
> 
> Is the example not applicable to pysnmp 4.2.5 / Python 3.4?
> 
> Best regards,
> Marat Rysbekov
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