[pox-dev] Defining Dictionary in POX controller

[Murphy McCauley]

One possible answer is that you should keep a set of the ones you've added so far...
self.macaddrtable = {}
self.macaddrs = set()

...

if (packet.src,packet.dst) not in self.macaddrs:
  self.macaddrs.add((packet.src,packet.dst]))
  self.macaddrtable[f_id]=(packet.src,packet.dst)
  f_id=f_id+1


There might be better things to be done, but it's impossible to say without knowing more (e.g., what you're trying to accomplish, what f_id is used for, etc.).

-- Murphy

On Nov 9, 2013, at 10:35 AM, Sayed Qaiser Ali Shah <11msitqshah at seecs.edu.pk> wrote:

> Hello everybody,
> 
> I have defined dictionary in POX controller and I by the name addrtable and I am saving two things in this dictionary i.e. Source mac and destination mac. What I have done is
> 
>     self.macaddrtable = {}
> ...
>     f_id=1
>     self.macaddrtable[f_id]={packet.src, packet.dst}
>     print self.macaddrtable
>     f_id=f_id+1
> 
> It is saving source mac and destination mac in the dictionary but the problem is when f_id increases it then save same source and destination mac again and again. 
> What I want is to save mac address only if its not in dictionary.